Mercurial > hg > nginx-site
annotate xml/en/docs/http/ngx_http_upstream_module.xml @ 1236:def99e640654
Fixed grammar.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Fri, 20 Jun 2014 16:31:27 +0400 |
parents | 726e8f47763c |
children | 2246339a6a93 |
rev | line source |
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1 <?xml version="1.0"?> |
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2 |
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3 <!-- |
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4 Copyright (C) Igor Sysoev |
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5 Copyright (C) Nginx, Inc. |
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6 --> |
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7 |
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
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9 |
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10 <module name="Module ngx_http_upstream_module" |
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11 link="/en/docs/http/ngx_http_upstream_module.html" |
589 | 12 lang="en" |
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13 rev="26"> |
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14 |
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15 <section id="summary"> |
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16 |
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17 <para> |
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18 The <literal>ngx_http_upstream_module</literal> module |
966 | 19 is used to define groups of servers that can be referenced |
20 by the <link doc="ngx_http_proxy_module.xml" id="proxy_pass"/>, | |
1181 | 21 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_pass"/>, |
1194 | 22 <link doc="ngx_http_uwsgi_module.xml" id="uwsgi_pass"/>, |
1181 | 23 <link doc="ngx_http_scgi_module.xml" id="scgi_pass"/>, and |
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24 <link doc="ngx_http_memcached_module.xml" id="memcached_pass"/> directives. |
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25 </para> |
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26 |
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27 </section> |
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28 |
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29 |
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30 <section id="example" name="Example Configuration"> |
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31 |
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32 <para> |
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33 <example> |
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34 upstream <emphasis>backend</emphasis> { |
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35 server backend1.example.com weight=5; |
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36 server backend2.example.com:8080; |
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37 server unix:/tmp/backend3; |
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38 |
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39 server backup1.example.com:8080 backup; |
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40 server backup2.example.com:8080 backup; |
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41 } |
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42 |
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43 server { |
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44 location / { |
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45 proxy_pass http://<emphasis>backend</emphasis>; |
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46 } |
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47 } |
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48 </example> |
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49 </para> |
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50 |
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51 <para> |
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52 Dynamically configurable group, |
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53 available as part of our |
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54 <commercial_version>commercial subscription</commercial_version>: |
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55 <example> |
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56 upstream <emphasis>appservers</emphasis> { |
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57 zone appservers 64k; |
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58 |
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59 server appserv1.example.com weight=5; |
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60 server appserv2.example.com:8080 fail_timeout=5s slow_start=30s; |
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61 server 192.0.2.1 max_fails=3; |
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62 |
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63 server reserve1.example.com:8080 backup; |
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64 server reserve2.example.com:8080 backup; |
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65 } |
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66 |
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67 server { |
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68 location / { |
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69 proxy_pass http://<emphasis>appservers</emphasis>; |
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70 health_check; |
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71 } |
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72 |
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73 location /upstream_conf { |
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74 upstream_conf; |
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75 allow 127.0.0.1; |
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76 deny all; |
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77 } |
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78 } |
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79 </example> |
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80 </para> |
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81 |
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82 </section> |
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83 |
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84 |
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85 <section id="directives" name="Directives"> |
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86 |
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87 <directive name="upstream"> |
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88 <syntax block="yes"><value>name</value></syntax> |
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89 <default/> |
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90 <context>http</context> |
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91 |
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92 <para> |
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93 Defines a group of servers. |
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94 Servers can listen on different ports. |
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95 In addition, servers listening on TCP and UNIX-domain sockets |
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96 can be mixed. |
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97 </para> |
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98 |
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99 <para> |
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100 Example: |
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101 <example> |
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102 upstream backend { |
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103 server backend1.example.com weight=5; |
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104 server 127.0.0.1:8080 max_fails=3 fail_timeout=30s; |
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105 server unix:/tmp/backend3; |
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106 |
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107 server backup1.example.com backup; |
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108 } |
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109 </example> |
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110 </para> |
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111 |
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112 <para> |
966 | 113 By default, requests are distributed between the servers using a |
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114 weighted round-robin balancing method. |
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115 In the above example, each 7 requests will be distributed as follows: |
966 | 116 5 requests go to <literal>backend1.example.com</literal> |
117 and one request to each of the second and third servers. | |
118 If an error occurs during communication with a server, the request will | |
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119 be passed to the next server, and so on until all of the functioning |
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120 servers will be tried. |
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121 If a successful response could not be obtained from any of the servers, |
966 | 122 the client will receive the result of the communication with the last server. |
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123 </para> |
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124 |
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125 </directive> |
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126 |
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127 |
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128 <directive name="server"> |
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129 <syntax><value>address</value> [<value>parameters</value>]</syntax> |
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130 <default/> |
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131 <context>upstream</context> |
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132 |
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133 <para> |
966 | 134 Defines the <value>address</value> and other <value>parameters</value> |
135 of a server. | |
136 The address can be specified as a domain name or IP address, | |
137 with an optional port, or as a UNIX-domain socket path | |
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138 specified after the “<literal>unix:</literal>” prefix. |
966 | 139 If a port is not specified, the port 80 is used. |
140 A domain name that resolves to several IP addresses defines | |
141 multiple servers at once. | |
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142 </para> |
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143 |
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144 <para> |
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145 The following parameters can be defined: |
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146 <list type="tag"> |
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147 |
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148 <tag-name><literal>weight</literal>=<value>number</value></tag-name> |
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149 <tag-desc> |
966 | 150 sets the weight of the server, by default, 1. |
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151 </tag-desc> |
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152 |
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153 <tag-name><literal>max_fails</literal>=<value>number</value></tag-name> |
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154 <tag-desc> |
966 | 155 sets the number of unsuccessful attempts to communicate with the server |
156 that should happen in the duration set by the <literal>fail_timeout</literal> | |
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157 parameter to consider the server unavailable for a duration also set by the |
966 | 158 <literal>fail_timeout</literal> parameter. |
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159 By default, the number of unsuccessful attempts is set to 1. |
966 | 160 The zero value disables the accounting of attempts. |
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161 What is considered an unsuccessful attempt is defined by the |
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162 <link doc="ngx_http_proxy_module.xml" id="proxy_next_upstream"/>, |
1181 | 163 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_next_upstream"/>, |
1194 | 164 <link doc="ngx_http_uwsgi_module.xml" id="uwsgi_next_upstream"/>, |
1181 | 165 <link doc="ngx_http_scgi_module.xml" id="scgi_next_upstream"/>, and |
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166 <link doc="ngx_http_memcached_module.xml" id="memcached_next_upstream"/> |
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167 directives. |
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168 </tag-desc> |
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169 |
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170 <tag-name><literal>fail_timeout</literal>=<value>time</value></tag-name> |
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171 <tag-desc> |
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172 sets |
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173 <list type="bullet"> |
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174 |
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175 <listitem> |
966 | 176 the time during which the specified number of unsuccessful attempts to |
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177 communicate with the server should happen to consider the server unavailable; |
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178 </listitem> |
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179 |
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180 <listitem> |
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181 and the period of time the server will be considered unavailable. |
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182 </listitem> |
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183 |
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184 </list> |
966 | 185 By default, the parameter is set to 10 seconds. |
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186 </tag-desc> |
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187 |
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188 <tag-name><literal>backup</literal></tag-name> |
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189 <tag-desc> |
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190 marks the server as a backup server. |
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191 It will be passed requests when the primary servers are unavailable. |
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192 </tag-desc> |
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193 |
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194 <tag-name><literal>down</literal></tag-name> |
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195 <tag-desc> |
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196 marks the server as permanently unavailable; used along with |
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197 the <link id="ip_hash"/> directive. |
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198 </tag-desc> |
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199 |
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200 </list> |
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201 </para> |
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202 |
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203 <para> |
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204 Additionally, |
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205 the following parameters are available as part of our |
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206 <commercial_version>commercial subscription</commercial_version>: |
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207 <list type="tag"> |
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208 |
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209 <tag-name id="max_conns"> |
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210 <literal>max_conns</literal>=<value>number</value> |
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211 </tag-name> |
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212 <tag-desc> |
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213 limits the maximum <value>number</value> of simultaneous connections to the |
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214 proxied server (1.5.9). |
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215 Default value is zero, meaning there is no limit. |
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216 </tag-desc> |
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217 |
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218 <tag-name id="resolve"> |
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219 <literal>resolve</literal> |
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220 </tag-name> |
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221 <tag-desc> |
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222 monitors changes of the IP addresses |
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223 that correspond to a domain name of the server, |
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224 and automatically modifies the upstream configuration |
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225 without the need of restarting nginx (1.5.12). |
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226 <para> |
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227 In order for this parameter to work, |
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228 the <link doc="ngx_http_core_module.xml" id="resolver"/> directive |
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229 must be specified in the |
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230 <link doc="ngx_http_core_module.xml" id="http"/> block. |
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231 Example: |
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232 <example> |
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233 http { |
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234 resolver 10.0.0.1; |
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235 |
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236 upstream u { |
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237 zone ...; |
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238 ... |
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239 server example.com resolve; |
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240 } |
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241 } |
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242 </example> |
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243 </para> |
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244 </tag-desc> |
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245 |
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246 <tag-name><literal>route</literal>=<value>string</value></tag-name> |
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247 <tag-desc> |
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248 sets the server route name. |
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249 </tag-desc> |
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250 |
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251 <tag-name><literal>slow_start</literal>=<value>time</value></tag-name> |
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252 <tag-desc> |
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253 sets the <value>time</value> during which the server will recover its weight |
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254 from zero to a nominal value, when unhealthy server becomes |
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255 <link id="health_check">healthy</link>, |
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256 or when the server becomes available after a period of time |
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257 it was considered unavailable. |
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258 Default value is zero, i.e. slow start is disabled. |
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259 </tag-desc> |
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260 |
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261 </list> |
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262 </para> |
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263 |
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264 <para> |
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265 <note> |
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266 If there is only a single server in a group, <literal>max_fails</literal>, |
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267 <literal>fail_timeout</literal> and <literal>slow_start</literal> parameters |
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268 are ignored, and such a server will never be considered unavailable. |
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269 </note> |
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270 </para> |
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271 |
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272 </directive> |
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273 |
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274 |
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275 <directive name="zone"> |
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276 <syntax><value>name</value> <value>size</value></syntax> |
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277 <default/> |
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278 <context>upstream</context> |
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279 |
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280 <para> |
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281 Defines the <value>name</value> and <value>size</value> of the shared |
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282 memory zone that keeps the group’s configuration and run-time state that are |
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283 shared between worker processes. |
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284 Such groups allow changing the group membership |
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285 or modifying the settings of a particular server |
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286 without the need of restarting nginx. |
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287 The configuration is accessible via a special location |
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288 handled by <link id="upstream_conf"/>. |
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289 </para> |
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290 |
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291 <para> |
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292 <note> |
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293 This directive is available as part of our |
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294 <commercial_version>commercial subscription</commercial_version>. |
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295 </note> |
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296 </para> |
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297 |
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298 </directive> |
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299 |
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300 |
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301 <directive name="hash"> |
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302 <syntax><value>key</value> [<literal>consistent</literal>]</syntax> |
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303 <default/> |
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304 <context>upstream</context> |
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305 <appeared-in>1.7.2</appeared-in> |
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306 |
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307 <para> |
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308 Specifies a load balancing method for a server group |
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309 where client-server mapping is based on the hashed <value>key</value> value. |
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310 The <value>key</value> can contain text, variables, and their combinations. |
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311 Note that adding or removing a server from the group |
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312 may result in remapping most of the keys to different servers. |
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313 The method is compatible with the |
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314 <link url="http://search.cpan.org/perldoc?Cache%3A%3AMemcached">Cache::Memcached</link> |
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315 Perl library. |
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316 </para> |
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317 |
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318 <para> |
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319 The <literal>consistent</literal> parameter specifies that |
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320 the <link url="http://www.last.fm/user/RJ/journal/2007/04/10/392555/">ketama</link> |
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321 consistent hashing method should be used instead. |
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322 The method ensures that only a few keys |
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323 will be remapped to different servers |
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324 when a server is added to or removed from the group. |
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325 This helps to achieve a higher cache hit ratio for caching servers. |
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326 The method is compatible with the |
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327 <link url="http://search.cpan.org/perldoc?Cache%3A%3AMemcached%3A%3AFast">Cache::Memcached::Fast</link> |
1236 | 328 Perl library with the <value>ketama_points</value> parameter set to 160. |
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329 </para> |
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330 |
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331 </directive> |
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332 |
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333 |
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334 <directive name="ip_hash"> |
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335 <syntax/> |
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336 <default/> |
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337 <context>upstream</context> |
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338 |
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339 <para> |
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340 Specifies that a group should use a load balancing method where requests |
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341 are distributed between servers based on client IP addresses. |
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342 The first three octets of the client IPv4 address, or the entire IPv6 address, |
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343 are used as a hashing key. |
966 | 344 The method ensures that requests from the same client will always be |
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345 passed to the same server except when this server is unavailable. |
966 | 346 In the latter case client requests will be passed to another server. |
347 Most probably, it will always be the same server as well. | |
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348 <note> |
566 | 349 IPv6 addresses are supported starting from versions 1.3.2 and 1.2.2. |
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350 </note> |
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351 </para> |
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352 |
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353 <para> |
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354 If one of the servers needs to be temporarily removed, it should |
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355 be marked with the <literal>down</literal> parameter in |
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356 order to preserve the current hashing of client IP addresses. |
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357 </para> |
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358 |
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359 <para> |
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360 Example: |
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361 <example> |
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362 upstream backend { |
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363 ip_hash; |
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364 |
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365 server backend1.example.com; |
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366 server backend2.example.com; |
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367 server backend3.example.com <emphasis>down</emphasis>; |
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368 server backend4.example.com; |
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369 } |
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370 </example> |
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371 </para> |
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372 |
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373 <para> |
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374 <note> |
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376 servers using the <literal>ip_hash</literal> load balancing method. |
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377 </note> |
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378 </para> |
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379 |
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380 </directive> |
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381 |
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382 |
316
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383 <directive name="keepalive"> |
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384 <syntax><value>connections</value></syntax> |
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385 <default/> |
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386 <context>upstream</context> |
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387 <appeared-in>1.1.4</appeared-in> |
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388 |
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389 <para> |
966 | 390 Activates the cache for connections to upstream servers. |
316
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391 </para> |
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392 |
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393 <para> |
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394 The <value>connections</value> parameter sets the maximum number of |
966 | 395 idle keepalive connections to upstream servers that are preserved in |
396 the cache of each worker process. | |
654
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397 When this number is exceeded, the least recently used connections |
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398 are closed. |
316
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399 <note> |
966 | 400 It should be particularly noted that the <literal>keepalive</literal> directive |
401 does not limit the total number of connections to upstream servers | |
402 that an nginx worker process can open. | |
403 The <value>connections</value> parameter should be set to a number small enough | |
404 to let upstream servers process new incoming connections as well. | |
316
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405 </note> |
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406 </para> |
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407 |
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408 <para> |
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409 Example configuration of memcached upstream with keepalive connections: |
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410 <example> |
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411 upstream memcached_backend { |
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412 server 127.0.0.1:11211; |
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413 server 10.0.0.2:11211; |
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414 |
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415 keepalive 32; |
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416 } |
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417 |
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418 server { |
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419 ... |
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420 |
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421 location /memcached/ { |
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422 set $memcached_key $uri; |
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423 memcached_pass memcached_backend; |
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424 } |
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425 |
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426 } |
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427 </example> |
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428 </para> |
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429 |
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430 <para> |
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431 For HTTP, the <link doc="ngx_http_proxy_module.xml" id="proxy_http_version"/> |
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432 directive should be set to “<literal>1.1</literal>” |
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433 and the <header>Connection</header> header field should be cleared: |
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434 <example> |
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435 upstream http_backend { |
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436 server 127.0.0.1:8080; |
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437 |
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438 keepalive 16; |
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439 } |
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440 |
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441 server { |
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442 ... |
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443 |
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444 location /http/ { |
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445 proxy_pass http://http_backend; |
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446 proxy_http_version 1.1; |
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447 proxy_set_header Connection ""; |
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448 ... |
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449 } |
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450 } |
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451 </example> |
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452 </para> |
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453 |
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454 <para> |
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455 <note> |
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456 Alternatively, HTTP/1.0 persistent connections can be used by passing the |
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457 <header>Connection: Keep-Alive</header> header field to an upstream server, |
966 | 458 though this method is not recommended. |
316
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459 </note> |
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460 </para> |
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461 |
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462 <para> |
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463 For FastCGI servers, it is required to set |
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464 <link doc="ngx_http_fastcgi_module.xml" id="fastcgi_keep_conn"/> |
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465 for keepalive connections to work: |
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466 <example> |
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467 upstream fastcgi_backend { |
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468 server 127.0.0.1:9000; |
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469 |
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470 keepalive 8; |
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471 } |
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472 |
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473 server { |
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474 ... |
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475 |
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476 location /fastcgi/ { |
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477 fastcgi_pass fastcgi_backend; |
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478 fastcgi_keep_conn on; |
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479 ... |
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480 } |
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481 } |
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482 </example> |
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483 </para> |
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484 |
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485 <para> |
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486 <note> |
533
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487 When using load balancer methods other than the default |
966 | 488 round-robin method, it is necessary to activate them before |
316
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489 the <literal>keepalive</literal> directive. |
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490 </note> |
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491 |
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492 <note> |
533
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493 SCGI and uwsgi protocols do not have a notion of keepalive connections. |
316
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494 </note> |
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495 </para> |
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496 |
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497 </directive> |
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498 |
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499 |
526
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500 <directive name="least_conn"> |
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501 <syntax/> |
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502 <default/> |
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503 <context>upstream</context> |
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504 <appeared-in>1.3.1</appeared-in> |
566 | 505 <appeared-in>1.2.2</appeared-in> |
526
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506 |
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507 <para> |
533
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508 Specifies that a group should use a load balancing method where a request |
526
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509 is passed to the server with the least number of active connections, |
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510 taking into account weights of servers. |
1232
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Upstream: least_conn description corresponds to the Russian text.
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parents:
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|
511 If there are several such servers, they are tried in turn using a |
533
fb630c3c5039
Revamped the upstream documentation somewhat.
Ruslan Ermilov <ru@nginx.com>
parents:
526
diff
changeset
|
512 weighted round-robin balancing method. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
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|
513 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
514 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
515 </directive> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
516 |
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|
517 |
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|
518 <directive name="health_check"> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
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|
519 <syntax> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
520 [<literal>interval=</literal><value>time</value>] |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
521 <!-- |
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parents:
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changeset
|
522 [<literal>jitter=</literal><value>time</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
523 --> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
524 [<literal>fails=</literal><value>number</value>] |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
525 [<literal>passes=</literal><value>number</value>] |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
526 [<literal>uri=</literal><value>uri</value>] |
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Commercial version documentation.
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parents:
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|
527 [<literal>match=</literal><value>name</value>]</syntax> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
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|
528 |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
529 <default/> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
530 <context>location</context> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
531 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
532 <para> |
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changeset
|
533 Enables periodic health checks of the servers in a |
953
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
534 <link id="upstream">group</link> referenced in the surrounding location. |
aded7086e84f
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|
535 </para> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
536 |
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Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
537 <para> |
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|
538 The following optional parameters are supported: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
539 <list type="bullet"> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
540 |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
541 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
542 <literal>interval</literal> |
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parents:
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|
543 sets the interval between two consecutive health checks, |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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|
544 by default, 5 seconds; |
953
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
545 </listitem> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
546 |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
547 <listitem> |
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Commercial version documentation.
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parents:
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|
548 <literal>fails</literal> |
956
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|
549 sets the number of consecutive failed health checks of a particular server |
488a3f738db0
Text revision of commercial modules.
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parents:
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|
550 after which this server will be considered unhealthy, |
488a3f738db0
Text revision of commercial modules.
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parents:
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|
551 by default, 1; |
953
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
552 </listitem> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
553 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
554 <listitem> |
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Commercial version documentation.
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parents:
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|
555 <literal>passes</literal> |
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changeset
|
556 sets the number of consecutive passed health checks of a particular server |
953
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Commercial version documentation.
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parents:
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changeset
|
557 after which the server will be considered healthy, |
956
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parents:
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changeset
|
558 by default, 1; |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
559 </listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
560 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
561 <listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
562 <literal>uri</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
563 defines the URI used in health check requests, |
956
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Text revision of commercial modules.
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parents:
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|
564 by default, “<literal>/</literal>”; |
953
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
565 </listitem> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
566 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
567 <listitem> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
568 <literal>match</literal> |
956
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parents:
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diff
changeset
|
569 specifies the <literal>match</literal> block configuring the tests that a |
488a3f738db0
Text revision of commercial modules.
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parents:
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|
570 response should pass in order for a health check to pass; |
488a3f738db0
Text revision of commercial modules.
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parents:
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|
571 by default, the response should have status code 2xx or 3xx. |
953
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|
572 </listitem> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
573 |
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parents:
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|
574 </list> |
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Ruslan Ermilov <ru@nginx.com>
parents:
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|
575 </para> |
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Commercial version documentation.
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parents:
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|
576 |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
577 <para> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
578 For example, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
579 <example> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
580 location / { |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
581 proxy_pass http://backend; |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
582 health_check; |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
583 } |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
584 </example> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
585 will send “<literal>/</literal>” requests to each |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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changeset
|
586 server in the <literal>backend</literal> group every five seconds. |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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changeset
|
587 If any communication error or timeout occurs, or a |
953
aded7086e84f
Commercial version documentation.
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parents:
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|
588 proxied server responds with the status code other than |
956
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Text revision of commercial modules.
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parents:
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diff
changeset
|
589 2xx or 3xx, the health check will fail, and the server will |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
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diff
changeset
|
590 be considered unhealthy. |
488a3f738db0
Text revision of commercial modules.
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parents:
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|
591 Client requests are not passed to unhealthy servers. |
953
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Commercial version documentation.
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parents:
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|
592 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
593 |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
594 <para> |
956
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parents:
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|
595 Health checks can be configured to test the status code of a response, |
953
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
596 presence of certain header fields and their values, |
956
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|
597 and the body contents. |
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Text revision of commercial modules.
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parents:
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|
598 Tests are configured separately using the <link id="match"/> directive |
953
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|
599 and referenced in the <literal>match</literal> parameter. |
956
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|
600 For example: |
953
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parents:
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changeset
|
601 <example> |
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Commercial version documentation.
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parents:
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changeset
|
602 http { |
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Commercial version documentation.
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parents:
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changeset
|
603 server { |
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Commercial version documentation.
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parents:
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changeset
|
604 ... |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
605 location / { |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
606 proxy_pass http://backend; |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
607 health_check match=welcome; |
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Commercial version documentation.
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parents:
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changeset
|
608 } |
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Commercial version documentation.
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parents:
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changeset
|
609 } |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
610 |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
611 match welcome { |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
612 status 200; |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
613 header Content-Type = text/html; |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
614 body ~ "Welcome to nginx!"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
615 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
616 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
617 </example> |
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parents:
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diff
changeset
|
618 This configuration tells that for a health check to pass, the response to a |
488a3f738db0
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parents:
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diff
changeset
|
619 health check request should succeed, |
953
aded7086e84f
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Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
620 have status 200, content type “<literal>text/html</literal>”, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
621 and contain “<literal>Welcome to nginx!</literal>” in the body. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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changeset
|
622 </para> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
623 |
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Commercial version documentation.
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parents:
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changeset
|
624 <para> |
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|
625 The server group must reside in the <link id="zone">shared memory</link>. |
953
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Commercial version documentation.
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|
626 </para> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
627 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
628 <para> |
aded7086e84f
Commercial version documentation.
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parents:
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changeset
|
629 If several health checks are defined for the same group of servers, |
956
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diff
changeset
|
630 a single failure of any check will make the corresponding server be |
488a3f738db0
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parents:
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diff
changeset
|
631 considered unhealthy. |
953
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Commercial version documentation.
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parents:
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diff
changeset
|
632 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
633 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
634 <para> |
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
635 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
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parents:
1127
diff
changeset
|
636 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
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parents:
1127
diff
changeset
|
637 <commercial_version>commercial subscription</commercial_version>. |
953
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|
638 </note> |
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parents:
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diff
changeset
|
639 </para> |
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Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
640 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
641 </directive> |
aded7086e84f
Commercial version documentation.
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parents:
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diff
changeset
|
642 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
643 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
644 <directive name="match"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
645 <syntax block="yes"><value>name</value></syntax> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
646 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
647 <context>http</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
648 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
649 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
650 Defines the named test set used to verify responses to health check requests. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
651 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
652 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
653 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
654 The following items can be tested in a response: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
655 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
656 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
657 <tag-name><literal>status 200;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
658 <tag-desc>status is 200</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
659 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
660 <tag-name><literal>status ! 500;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
661 <tag-desc>status is not 500</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
662 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
663 <tag-name><literal>status 200 204;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
664 <tag-desc>status is 200 or 204</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
665 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
666 <tag-name><literal>status ! 301 302;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
667 <tag-desc>status is neither 301 nor 302</tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
668 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
669 <tag-name><literal>status 200-399;</literal></tag-name> |
966 | 670 <tag-desc>status is in the range from 200 to 399</tag-desc> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
671 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
672 <tag-name><literal>status ! 400-599;</literal></tag-name> |
966 | 673 <tag-desc>status is not in the range from 400 to 599</tag-desc> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
674 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
675 <tag-name><literal>status 301-303 307;</literal></tag-name> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
676 <tag-desc>status is either 301, 302, 303, or 307</tag-desc> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
677 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
678 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
679 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
680 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
681 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
682 <tag-name><literal>header Content-Type = text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
683 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
684 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
685 with value <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
686 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
687 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
688 <tag-name><literal>header Content-Type != text/html;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
689 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
690 header contains <header>Content-Type</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
691 with value other than <literal>text/html</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
692 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
693 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
694 <tag-name><literal>header Connection ~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
695 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
696 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
697 with value matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
698 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
699 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
700 <tag-name><literal>header Connection !~ close;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
701 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
702 header contains <header>Connection</header> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
703 with value not matching regular expression <literal>close</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
704 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
705 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
706 <tag-name><literal>header Host;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
707 <tag-desc>header contains <header>Host</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
708 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
709 <tag-name><literal>header ! X-Accel-Redirect;</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
710 <tag-desc>header lacks <header>X-Accel-Redirect</header></tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
711 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
712 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
713 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
714 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
715 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
716 <tag-name><literal>body ~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
717 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
718 body matches regular expression “<literal>Welcome to nginx!</literal>” |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
719 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
720 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
721 <tag-name><literal>body !~ "Welcome to nginx!";</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
722 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
723 body does not match regular expression “<literal>Welcome to nginx!</literal>” |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
724 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
725 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
726 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
727 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
728 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
729 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
730 If several tests are specified, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
731 the response matches only if it matches all tests. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
732 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
733 Only the first 256k of the response body are examined. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
734 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
735 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
736 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
737 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
738 Examples: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
739 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
740 # status is 200, content type is "text/html", |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
741 # and body contains "Welcome to nginx!" |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
742 match welcome { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
743 status 200; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
744 header Content-Type = text/html; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
745 body ~ "Welcome to nginx!"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
746 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
747 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
748 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
749 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
750 # status is not one of 301, 302, 303, or 307, and header does not have "Refresh:" |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
751 match not_redirect { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
752 status ! 301-303 307; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
753 header ! Refresh; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
754 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
755 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
756 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
757 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
758 # status ok and not in maintenance mode |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
759 match server_ok { |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
760 status 200-399; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
761 body !~ "maintenance mode"; |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
762 } |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
763 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
764 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
765 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
766 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
767 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
768 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
769 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
770 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
771 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
772 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
773 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
774 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
775 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
776 |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
777 <directive name="queue"> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
778 <syntax> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
779 <value>number</value> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
780 [<literal>timeout</literal>=<value>time</value>]</syntax> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
781 <default/> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
782 <context>upstream</context> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
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diff
changeset
|
783 <appeared-in>1.5.12</appeared-in> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
784 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
785 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
786 If an upstream server cannot be selected immediately |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
787 while processing a request, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
788 and there are the servers in the group that have reached the |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
789 <link id="max_conns"/> limit, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
790 the request will be placed into the queue. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
791 The directive specifies the maximum number of requests that can be in the queue |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
792 at the same time. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
793 If the queue is filled up, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
794 or the server to pass the request to cannot been selected within |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
795 the time period specified in the <literal>timeout</literal> parameter, |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
796 an error will be returned to the client. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
797 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
798 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
799 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
800 The default value of the <literal>timeout</literal> parameter is 60 seconds. |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
801 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
802 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
803 <para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
804 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
805 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
806 <commercial_version>commercial subscription</commercial_version>. |
1125
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
807 </note> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
808 </para> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
809 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
810 </directive> |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
811 |
9a95b9026a16
Upstream: reallocated the "queue" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
1124
diff
changeset
|
812 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
813 <directive name="sticky"> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
814 <syntax><literal>cookie</literal> <value>name</value> |
1001
35ae9ded0465
Updated the "sticky" directive description.
Vladimir Homutov <vl@nginx.com>
parents:
988
diff
changeset
|
815 [<literal>expires=</literal><value>time</value>] |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
816 [<literal>domain=</literal><value>domain</value>] |
1001
35ae9ded0465
Updated the "sticky" directive description.
Vladimir Homutov <vl@nginx.com>
parents:
988
diff
changeset
|
817 [<literal>path=</literal><value>path</value>]</syntax> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
818 <syntax><literal>route</literal> <value>variable</value> ...</syntax> |
987
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
819 <default/> |
edd505634357
Documented the "sticky" directive.
Vladimir Homutov <vl@nginx.com>
parents:
981
diff
changeset
|
820 <context>upstream</context> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
821 <appeared-in>1.5.7</appeared-in> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
822 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
823 <para> |
962
f3754c623e6b
Minor editing of the stiky_cookie_insert directive.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
960
diff
changeset
|
824 Enables session affinity, which causes requests from the same client to be |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
825 passed to the same server in a group of servers. |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
826 Two methods are available, |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
827 <literal>cookie</literal> and <literal>route</literal>. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
828 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
829 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
830 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
831 When the <literal>cookie</literal> method is used, information about the |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
832 designated server is passed in an HTTP cookie: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
833 <example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
834 upstream backend { |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
835 server backend1.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
836 server backend2.example.com; |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
837 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
838 sticky cookie srv_id expires=1h domain=.example.com path=/; |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
839 } |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
840 </example> |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
841 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
842 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
843 <para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
844 A request that comes from a client not yet bound to a particular server |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
845 is passed to the server selected by the configured balancing method. |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
846 Further requests from the same client are passed to the same server. |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
847 If the designated server cannot process a request, the new server is |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
848 selected as if the client has not been bound yet. |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
849 </para> |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
850 |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
851 <para> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
852 The first parameter sets the name of the cookie to be set or inspected. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
853 Additional parameters may be as follows: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
854 <list type="tag"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
855 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
856 <tag-name><literal>expires</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
857 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
858 Sets the time for which a browser should keep the cookie. |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
859 The special value <literal>max</literal> will cause the cookie to expire on |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
860 “<literal>31 Dec 2037 23:55:55 GMT</literal>”. |
960
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
861 If the parameter is not specified, it will cause the cookie to expire at |
48ab154edf10
Upstream: removed obsoleted directives in the "sticky" module.
Vladimir Homutov <vl@nginx.com>
parents:
956
diff
changeset
|
862 the end of a browser session. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
863 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
864 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
865 <tag-name><literal>domain</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
866 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
867 Defines the domain for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
868 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
869 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
870 <tag-name><literal>path</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
871 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
872 Defines the path for which the cookie is set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
873 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
874 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
875 </list> |
981 | 876 If any parameters are omitted, the corresponding cookie fields are not set. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
877 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
878 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
879 <para> |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
880 When the <literal>route</literal> method is used, proxied server assigns |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
881 client a route on receipt of the first request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
882 All subsequent requests from this client will carry routing information |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
883 in a cookie or URI. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
884 This information is compared with the “<literal>route</literal>” parameter |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
885 of the <link id="server"/> directive to identify the server to which the |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
886 request should be proxied. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
887 If the designated server cannot process a request, the new server is |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
888 selected by the configured balancing method as if there is no routing |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
889 information in the request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
890 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
891 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
892 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
893 The parameters of the <literal>route</literal> method specify variables that |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
894 may contain routing information. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
895 The first non-empty variable is used to find the matching server. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
896 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
897 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
898 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
899 Example: |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
900 <example> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
901 map $cookie_jsessionid $route_cookie { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
902 ~.+\.(?P<route>\w+)$ $route; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
903 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
904 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
905 map $request_uri $route_uri { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
906 ~jsessionid=.+\.(?P<route>\w+)$ $route; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
907 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
908 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
909 upstream backend { |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
910 server backend1.example.com route=a; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
911 server backend2.example.com route=b; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
912 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
913 sticky route $route_cookie $route_uri; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
914 } |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
915 </example> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
916 Here, the route is taken from the “<literal>JSESSIONID</literal>” cookie |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
917 if present in a request. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
918 Otherwise, the route from the URI is used. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
919 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
920 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
921 <para> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
922 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
923 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
924 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
925 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
926 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
927 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
928 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
929 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
930 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
931 <directive name="sticky_cookie_insert"> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
932 <syntax><value>name</value> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
933 [<literal>expires=</literal><value>time</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
934 [<literal>domain=</literal><value>domain</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
935 [<literal>path=</literal><value>path</value>]</syntax> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
936 <default/> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
937 <context>upstream</context> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
938 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
939 <para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
940 This directive is obsolete since version 1.5.7. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
941 An equivalent |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
942 <link id="sticky"/> directive with a new syntax should be used instead: |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
943 <note> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
944 <literal>sticky cookie</literal> <value>name</value> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
945 [<literal>expires=</literal><value>time</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
946 [<literal>domain=</literal><value>domain</value>] |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
947 [<literal>path=</literal><value>path</value>]; |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
948 </note> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
949 </para> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
950 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
951 </directive> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
952 |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
953 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
954 <directive name="upstream_conf"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
955 <syntax/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
956 <default/> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
957 <context>location</context> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
958 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
959 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
960 Turns on the HTTP interface of upstream configuration in the surrounding |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
961 location. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
962 Access to this location should be |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
963 <link doc="ngx_http_core_module.xml" id="satisfy">limited</link>. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
964 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
965 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
966 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
967 Configuration commands can be used to: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
968 <list type="bullet"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
969 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
970 <listitem>view all primary or backup servers in a group;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
971 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
972 <listitem>view an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
973 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
974 <listitem>modify an individual server;</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
975 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
976 <listitem>add a new server (see the note below);</listitem> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
977 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
978 <listitem>remove an individual server.</listitem> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
979 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
980 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
981 <note> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
982 As noted in the <link id="server"/> directive, specifying a server |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
983 as a domain name may result in several servers being added to the group. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
984 Since addresses in a group are not required to be unique, individual |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
985 servers in a group can be uniquely referenced to only by their ID. |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
986 IDs are assigned automatically and shown on viewing of the group configuration. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
987 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
988 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
989 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
990 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
991 A configuration command consists of parameters passed as request arguments, |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
992 for example: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
993 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
994 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
995 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
996 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
997 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
998 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
999 The following parameters are supported: |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1000 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1001 <list type="tag" compact="no"> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1002 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1003 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1004 <literal>upstream=</literal><value>name</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1005 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1006 Selects a group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1007 This parameter is mandatory. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1008 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1009 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1010 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1011 <literal>backup=</literal> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1012 </tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1013 <tag-desc> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1014 If not set, selects primary servers in the group. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1015 If set, selects backup servers in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1016 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1017 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1018 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1019 <literal>id=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1020 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1021 Selects an individual primary or backup server in the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1022 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1023 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1024 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1025 <literal>remove=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1026 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1027 Removes an individual primary or backup server from the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1028 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1029 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1030 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1031 <literal>add=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1032 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1033 Adds a new primary or backup server to the group. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1034 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1035 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1036 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1037 <literal>server=</literal><value>address</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1038 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1039 Same as the “<literal>address</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1040 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1041 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1042 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1043 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1044 <literal>weight=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1045 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1046 Same as the “<literal>weight</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1047 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1048 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1049 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1050 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1051 <literal>max_fails=</literal><value>number</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1052 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1053 Same as the “<literal>max_fails</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1054 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1055 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1056 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1057 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1058 <literal>fail_timeout=</literal><value>time</value></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1059 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1060 Same as the “<literal>fail_timeout</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1061 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1062 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1063 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1064 <tag-name> |
955
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1065 <literal>slow_start=</literal><value>time</value></tag-name> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1066 <tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1067 Same as the “<literal>slow_start</literal>” parameter |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1068 of the <link id="server"/> directive. |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1069 </tag-desc> |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1070 |
28d580f1eb63
Documented the "slow_start" parameter of the upstream "server" directive.
Vladimir Homutov <vl@nginx.com>
parents:
953
diff
changeset
|
1071 <tag-name> |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1072 <literal>down=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1073 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1074 Same as the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1075 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1076 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1077 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1078 <tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1079 <literal>up=</literal></tag-name> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1080 <tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1081 The opposite of the “<literal>down</literal>” parameter |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1082 of the <link id="server"/> directive. |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1083 </tag-desc> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1084 |
1026
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1085 <tag-name> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1086 <literal>route=</literal><value>string</value></tag-name> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1087 <tag-desc> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1088 Same as the “<literal>route</literal>” parameter |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1089 of the <link id="server"/> directive. |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1090 </tag-desc> |
3056640d5022
Upstream: documented new "sticky" features.
Ruslan Ermilov <ru@nginx.com>
parents:
1011
diff
changeset
|
1091 |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1092 </list> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1093 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1094 The first three parameters select a target the command applies to. |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1095 Without other parameters, the command shows configuration of the selected |
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1096 target. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1097 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1098 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1099 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1100 For example, to view the primary servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1101 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1102 http://127.0.0.1/upstream_conf?upstream=appservers |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1103 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1104 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1105 To view the backup servers in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1106 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1107 http://127.0.0.1/upstream_conf?upstream=appservers&backup= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1108 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1109 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1110 To view an individual primary server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1111 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1112 http://127.0.0.1/upstream_conf?upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1113 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1114 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1115 To view an individual backup server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1116 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1117 http://127.0.0.1/upstream_conf?upstream=appservers&backup=&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1118 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1119 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1120 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1121 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1122 To add a new primary or backup server to the group, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1123 specify its address in the “<literal>server=</literal>” parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1124 Without other parameters specified, a server will be added with other |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1125 parameters set to their default values (see the <link id="server"/> directive). |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1126 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1127 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1128 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1129 For example, to add a new primary server to the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1130 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1131 http://127.0.0.1/upstream_conf?add=&upstream=appservers&server=127.0.0.1:8080 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1132 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1133 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1134 To add a new backup server to the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1135 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1136 http://127.0.0.1/upstream_conf?add=&upstream=appservers&backup=&server=127.0.0.1:8080 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1137 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1138 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1139 To add a new primary server to the group, |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1140 set its parameters to non-default values |
968
fa19bacf6e1e
Unified upstream server up/down state terminology.
Vladimir Homutov <vl@nginx.com>
parents:
966
diff
changeset
|
1141 and mark it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1142 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1143 http://127.0.0.1/upstream_conf?add=&upstream=appservers&server=127.0.0.1:8080&weight=2&max_fails=3&fail_timeout=3s&down= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1144 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1145 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1146 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1147 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1148 To remove an individual primary or backup server from the group, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1149 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1150 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1151 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1152 <para> |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1153 For example, to remove an individual primary server from the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1154 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1155 http://127.0.0.1/upstream_conf?remove=&upstream=appservers&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1156 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1157 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1158 To remove an individual backup server from the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1159 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1160 http://127.0.0.1/upstream_conf?remove=&upstream=appservers&backup=&id=42 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1161 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1162 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1163 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1164 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1165 To modify an individual primary or backup server in the group, |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1166 select it with the <literal>id=</literal> parameter. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1167 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1168 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1169 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1170 For example, to modify an individual primary server in the group |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1171 by marking it as “<literal>down</literal>”, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1172 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1173 http://127.0.0.1/upstream_conf?upstream=appservers&id=42&down= |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1174 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1175 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1176 To modify the address of an individual backup server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1177 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1178 http://127.0.0.1/upstream_conf?upstream=appservers&backup=&id=42&server=192.0.2.3:8123 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1179 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1180 |
956
488a3f738db0
Text revision of commercial modules.
Egor Nikitin <yegor.nikitin@gmail.com>
parents:
955
diff
changeset
|
1181 To modify other parameters of an individual primary server in the group, send: |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1182 <example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1183 http://127.0.0.1/upstream_conf?upstream=appservers&id=42&max_fails=3&weight=4 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1184 </example> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1185 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1186 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1187 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1188 <para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1189 <note> |
1128
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
1190 This directive is available as part of our |
1594ed379f1f
De-i18n'ed <commercial_version/>.
Ruslan Ermilov <ru@nginx.com>
parents:
1127
diff
changeset
|
1191 <commercial_version>commercial subscription</commercial_version>. |
953
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1192 </note> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1193 </para> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1194 |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1195 </directive> |
aded7086e84f
Commercial version documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
942
diff
changeset
|
1196 |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1197 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1198 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1199 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1200 <section id="variables" name="Embedded Variables"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1201 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1202 <para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1203 The <literal>ngx_http_upstream_module</literal> module |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1204 supports the following embedded variables: |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1205 <list type="tag"> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1206 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1207 <tag-name id="var_upstream_addr"><var>$upstream_addr</var></tag-name> |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1208 <tag-desc> |
966 | 1209 keeps the IP address and port of the server, |
1210 or the path to the UNIX-domain socket. | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1211 If several servers were contacted during request processing, |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1212 their addresses are separated by commas, e.g. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1213 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock</literal>”. |
966 | 1214 If an internal redirect from one server group to another happens, |
1215 initiated by | |
293
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1216 <header>X-Accel-Redirect</header> or |
966 | 1217 <link doc="ngx_http_core_module.xml" id="error_page"/>, |
1218 then the server addresses from different groups are separated by colons, e.g. | |
293
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English translation of the ngx_http_upstream_module documentation.
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diff
changeset
|
1219 “<literal>192.168.1.1:80, 192.168.1.2:80, unix:/tmp/sock : 192.168.10.1:80, 192.168.10.2:80</literal>”. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1220 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1221 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1222 <tag-name id="var_upstream_cache_status"><var>$upstream_cache_status</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1223 </tag-name> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1224 <tag-desc> |
966 | 1225 keeps the status of accessing a response cache (0.8.3). |
1075
6c021feec587
Removed unjustified non-breakable spaces.
Ruslan Ermilov <ru@nginx.com>
parents:
1026
diff
changeset
|
1226 The status can be either “<literal>MISS</literal>”, |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1227 “<literal>BYPASS</literal>”, “<literal>EXPIRED</literal>”, |
1011
2ad2f30efdf2
Documented the "fastcgi_" and "proxy_cache_revalidate" directives.
Vladimir Homutov <vl@nginx.com>
parents:
1003
diff
changeset
|
1228 “<literal>STALE</literal>”, “<literal>UPDATING</literal>”, |
2ad2f30efdf2
Documented the "fastcgi_" and "proxy_cache_revalidate" directives.
Vladimir Homutov <vl@nginx.com>
parents:
1003
diff
changeset
|
1229 “<literal>REVALIDATED</literal>” or “<literal>HIT</literal>”. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1230 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1231 |
1186
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1232 <tag-name id="var_upstream_cookie_"><var>$upstream_cookie_</var><value>name</value> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1233 </tag-name> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1234 <tag-desc> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1235 cookie with the specified <value>name</value> sent by the upstream server |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1236 in the <header>Set-Cookie</header> response header field (1.7.1). |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1237 Only the last server’s response header fields are saved. |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1238 </tag-desc> |
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1239 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1240 <tag-name id="var_upstream_response_length"><var>$upstream_response_length</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1241 </tag-name> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1242 <tag-desc> |
966 | 1243 keeps the lengths of responses obtained from the upstream servers (0.7.27); |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1244 lengths are kept in bytes. |
966 | 1245 Several response lengths are separated by commas and colons |
1246 like addresses in the <var>$upstream_addr</var> variable. | |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1247 </tag-desc> |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1248 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1249 <tag-name id="var_upstream_response_time"><var>$upstream_response_time</var> |
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1250 </tag-name> |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1251 <tag-desc> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1252 keeps times of responses obtained from upstream servers; |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1253 times are kept in seconds with a milliseconds resolution. |
966 | 1254 Several response times are separated by commas and colons |
1255 like addresses in the <var>$upstream_addr</var> variable. | |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1256 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1257 |
1155
07402a11fd8d
Assigned IDs to tags describing variables.
Vladimir Homutov <vl@nginx.com>
parents:
1128
diff
changeset
|
1258 <tag-name id="var_upstream_status"><var>$upstream_status</var></tag-name> |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
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parents:
diff
changeset
|
1259 <tag-desc> |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1260 keeps codes of responses obtained from upstream servers. |
966 | 1261 Several response codes are separated by commas and colons |
1262 like addresses in the <var>$upstream_addr</var> variable. | |
293
34246e706f48
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parents:
diff
changeset
|
1263 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1264 |
1186
8125bec5c7a1
Upstream: documented the $upstream_cookie_* variables.
Ruslan Ermilov <ru@nginx.com>
parents:
1181
diff
changeset
|
1265 <tag-name id="var_upstream_http_"><var>$upstream_http_</var><value>name</value></tag-name> |
293
34246e706f48
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parents:
diff
changeset
|
1266 <tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1267 keep server response header fields. |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1268 For example, the <header>Server</header> response header field |
966 | 1269 is available through the <var>$upstream_http_server</var> variable. |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1270 The rules of converting header field names to variable names are the same |
966 | 1271 as for the variables that start with the |
731
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1272 “<link doc="ngx_http_core_module.xml" id="variables">$http_</link>” prefix. |
f62328124e5b
Documented $upstream_cache_status and $upstream_response_length variables.
Vladimir Homutov <vl@nginx.com>
parents:
654
diff
changeset
|
1273 Only the last server’s response header fields are saved. |
293
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1274 </tag-desc> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
diff
changeset
|
1275 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
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1276 </list> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
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1277 </para> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
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1278 |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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|
1279 </section> |
34246e706f48
English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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1280 |
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English translation of the ngx_http_upstream_module documentation.
Ruslan Ermilov <ru@nginx.com>
parents:
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1281 </module> |