Mercurial > hg > nginx-site
annotate xml/ru/docs/stream/ngx_stream_core_module.xml @ 1710:692d34a2adfc
Regenerated.
author | Maxim Konovalov <maxim@nginx.com> |
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date | Fri, 27 May 2016 15:49:10 +0000 |
parents | 93063516f6ff |
children | a99ebc3af3e4 |
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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) Nginx, Inc. |
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5 --> |
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6 |
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7 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd"> |
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8 |
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9 <module name="Модуль ngx_stream_core_module" |
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10 link="/ru/docs/stream/ngx_stream_core_module.html" |
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11 lang="ru" |
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12 rev="12"> |
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13 |
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14 <section id="summary"> |
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15 |
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16 <para> |
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17 Модуль <literal>ngx_stream_core_module</literal> |
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18 доступен начиная с версии 1.9.0. |
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19 По умолчанию этот модуль не собирается, его сборку необходимо |
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20 разрешить с помощью конфигурационного параметра |
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21 <literal>--with-stream</literal>. |
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22 </para> |
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23 |
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24 </section> |
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25 |
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26 |
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27 <section id="example" name="Пример конфигурации"> |
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28 |
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29 <para> |
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30 <example> |
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31 worker_processes auto; |
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32 |
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33 error_log /var/log/nginx/error.log info; |
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34 |
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35 events { |
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36 worker_connections 1024; |
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37 } |
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38 |
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39 stream { |
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40 upstream backend { |
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41 hash $remote_addr consistent; |
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42 |
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43 server backend1.example.com:12345 weight=5; |
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44 server 127.0.0.1:12345 max_fails=3 fail_timeout=30s; |
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45 server unix:/tmp/backend3; |
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46 } |
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47 |
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48 upstream dns { |
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49 server 192.168.0.1:53535; |
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50 server dns.example.com:53; |
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51 } |
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52 |
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53 server { |
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54 listen 12345; |
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55 proxy_connect_timeout 1s; |
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56 proxy_timeout 3s; |
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57 proxy_pass backend; |
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58 } |
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59 |
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60 server { |
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61 listen 127.0.0.1:53 udp; |
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62 proxy_responses 1; |
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63 proxy_timeout 20s; |
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64 proxy_pass dns; |
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65 } |
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66 |
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67 server { |
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68 listen [::1]:12345; |
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69 proxy_pass unix:/tmp/stream.socket; |
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70 } |
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71 } |
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72 </example> |
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73 </para> |
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74 |
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75 </section> |
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76 |
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77 |
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78 <section id="directives" name="Директивы"> |
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79 |
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80 <directive name="listen"> |
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81 <syntax> |
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82 <value>адрес</value>:<value>порт</value> |
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83 [<literal>ssl</literal>] |
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84 [<literal>udp</literal>] |
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85 [<literal>backlog</literal>=<value>число</value>] |
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86 [<literal>bind</literal>] |
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87 [<literal>ipv6only</literal>=<literal>on</literal>|<literal>off</literal>] |
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88 [<literal>reuseport</literal>] |
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89 [<literal>so_keepalive</literal>=<literal>on</literal>|<literal>off</literal>|[<value>keepidle</value>]:[<value>keepintvl</value>]:[<value>keepcnt</value>]]</syntax> |
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90 <default/> |
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91 <context>server</context> |
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92 |
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93 <para> |
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94 Задаёт <value>адрес</value> и <value>порт</value> для сокета, |
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95 на котором сервер будет принимать соединения. |
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96 Можно указать только порт. |
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97 Кроме того, адрес может быть именем хоста, например: |
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98 <example> |
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99 listen 127.0.0.1:12345; |
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100 listen *:12345; |
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101 listen 12345; # то же, что и *:12345 |
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102 listen localhost:12345; |
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103 </example> |
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104 IPv6-адреса задаются в квадратных скобках: |
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105 <example> |
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106 listen [::1]:12345; |
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107 listen [::]:12345; |
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108 </example> |
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109 UNIX-сокеты задаются префиксом “<literal>unix:</literal>” |
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110 <example> |
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111 listen unix:/var/run/nginx.sock; |
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112 </example> |
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113 |
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114 </para> |
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115 |
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116 <para> |
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117 Параметр <literal>ssl</literal> указывает на то, что все соединения, |
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118 принимаемые на данном порту, должны работать в режиме SSL. |
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119 </para> |
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120 |
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121 <para id="udp"> |
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122 Параметр <literal>udp</literal> конфигурирует слушающий сокет |
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123 для работы с датаграммами (1.9.13). |
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124 </para> |
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125 |
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126 <para> |
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127 В директиве <literal>listen</literal> можно также указать несколько |
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128 дополнительных параметров, специфичных для связанных с сокетами |
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129 системных вызовов. |
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130 <list type="tag"> |
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131 |
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132 <tag-name> |
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133 <literal>backlog</literal>=<value>число</value> |
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134 </tag-name> |
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135 <tag-desc> |
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136 задаёт параметр <literal>backlog</literal> в вызове |
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137 <c-func>listen</c-func>, который ограничивает |
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138 максимальный размер очереди ожидающих приёма соединений (1.9.2). |
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139 По умолчанию <literal>backlog</literal> устанавливается равным -1 для |
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140 FreeBSD, DragonFly BSD и Mac OS X, |
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141 и 511 для других платформ. |
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142 </tag-desc> |
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143 |
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144 <tag-name> |
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145 <literal>bind</literal> |
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146 </tag-name> |
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147 <tag-desc> |
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148 параметр указывает, что для данной пары |
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149 <value>адрес</value>:<value>порт</value> нужно делать |
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150 <c-func>bind</c-func> отдельно. |
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151 Это нужно потому, что если описаны несколько директив <literal>listen</literal> |
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152 с одинаковым портом, но разными адресами, и одна из директив |
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153 <literal>listen</literal> слушает на всех адресах для данного порта |
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154 (<literal>*:</literal><value>порт</value>), то nginx сделает |
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155 <c-func>bind</c-func> только на <literal>*:</literal><value>порт</value>. |
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156 Необходимо заметить, что в этом случае для определения адреса, на которой |
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157 пришло соединение, делается системный вызов <c-func>getsockname</c-func>. |
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158 Если же используются параметры <literal>ipv6only</literal> |
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159 или <literal>so_keepalive</literal>, |
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160 то для данной пары |
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161 <value>адрес</value>:<value>порт</value> всегда делается |
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162 отдельный вызов <c-func>bind</c-func>. |
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163 </tag-desc> |
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164 |
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165 <tag-name> |
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166 <literal>ipv6only</literal>=<literal>on</literal>|<literal>off</literal> |
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167 </tag-name> |
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168 <tag-desc> |
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169 этот параметр определяет |
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170 (через параметр сокета <c-def>IPV6_V6ONLY</c-def>), |
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171 будет ли слушающий на wildcard-адресе <literal>[::]</literal> IPv6-сокет |
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172 принимать только IPv6-соединения, или же одновременно IPv6- и IPv4-соединения. |
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173 По умолчанию параметр включён. |
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174 Установить его можно только один раз на старте. |
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175 </tag-desc> |
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176 |
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177 <tag-name id="reuseport"> |
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178 <literal>reuseport</literal> |
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179 </tag-name> |
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180 <tag-desc> |
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181 этот параметр (1.9.1) указывает, что нужно создавать отдельный слушающий сокет |
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182 для каждого рабочего процесса |
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183 (через параметр сокета <c-def>SO_REUSEPORT</c-def>), позволяя ядру |
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184 распределять входящие соединения между рабочими процессами. |
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185 В настоящий момент это работает только на Linux 3.9+ и DragonFly BSD. |
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186 <note> |
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187 Ненадлежащее использование параметра может иметь |
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188 <link url="http://man7.org/linux/man-pages/man7/socket.7.html">последствия</link> |
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189 в плане безопасности. |
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190 </note> |
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191 </tag-desc> |
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192 |
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193 <tag-name> |
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194 <literal>so_keepalive</literal>=<literal>on</literal>|<literal>off</literal>|[<value>keepidle</value>]:[<value>keepintvl</value>]:[<value>keepcnt</value>] |
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195 </tag-name> |
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196 <tag-desc> |
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197 этот параметр конфигурирует для слушающего сокета |
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198 поведение “TCP keepalive”. |
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199 Если этот параметр опущен, то для сокета будут действовать |
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200 настройки операционной системы. |
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201 Если он установлен в значение “<literal>on</literal>”, то для сокета |
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202 включается параметр <c-def>SO_KEEPALIVE</c-def>. |
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203 Если он установлен в значение “<literal>off</literal>”, то для сокета |
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204 параметр <c-def>SO_KEEPALIVE</c-def> выключается. |
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205 Некоторые операционные системы поддерживают настройку параметров |
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206 “TCP keepalive” на уровне сокета посредством параметров |
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207 <c-def>TCP_KEEPIDLE</c-def>, <c-def>TCP_KEEPINTVL</c-def> и |
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208 <c-def>TCP_KEEPCNT</c-def>. |
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209 На таких системах (в настоящий момент это Linux 2.4+, NetBSD 5+ и |
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210 FreeBSD 9.0-STABLE) |
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211 их можно сконфигурировать с помощью параметров <value>keepidle</value>, |
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212 <value>keepintvl</value> и <value>keepcnt</value>. |
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213 Один или два параметра могут быть опущены, в таком случае для |
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214 соответствующего параметра сокета будут действовать стандартные |
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215 системные настройки. |
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216 Например, |
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217 <example>so_keepalive=30m::10</example> |
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218 установит таймаут бездействия (<c-def>TCP_KEEPIDLE</c-def>) в 30 минут, |
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219 для интервала проб (<c-def>TCP_KEEPINTVL</c-def>) будет действовать |
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220 стандартная системная настройка, а счётчик проб (<c-def>TCP_KEEPCNT</c-def>) |
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221 будет равен 10. |
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222 </tag-desc> |
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223 |
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224 </list> |
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225 </para> |
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226 |
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227 <para> |
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228 Разные серверы должны слушать на разных парах |
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229 <value>адрес</value>:<value>порт</value>. |
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230 </para> |
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231 |
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232 </directive> |
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233 |
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234 |
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235 <directive name="resolver"> |
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236 <syntax> |
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237 <value>адрес</value> ... |
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238 [<literal>valid</literal>=<value>время</value>] |
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239 [<literal>ipv6</literal>=<literal>on</literal>|<literal>off</literal>]</syntax> |
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240 <default/> |
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241 <context>stream</context> |
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242 <context>server</context> |
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243 |
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244 <para> |
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245 Задаёт серверы DNS, используемые для преобразования имён вышестоящих серверов |
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246 в адреса, например: |
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247 <example> |
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248 resolver 127.0.0.1 [::1]:5353; |
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249 </example> |
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250 Адрес может быть указан в виде доменного имени или IP-адреса, |
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251 и необязательного порта. |
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252 Если порт не указан, используется порт 53. |
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253 Серверы DNS опрашиваются циклически. |
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254 </para> |
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255 |
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256 <para> |
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257 По умолчанию nginx будет искать как IPv4-, так и IPv6-адреса |
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258 при преобразовании имён в адреса. |
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259 Если поиск IPv6-адресов нежелателен, |
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260 можно указать параметр <literal>ipv6=off</literal>. |
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261 </para> |
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262 |
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263 <para> |
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264 По умолчанию nginx кэширует ответы, используя значение TTL из ответа. |
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265 Необязательный параметр <literal>valid</literal> позволяет это |
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266 переопределить: |
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267 <example> |
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268 resolver 127.0.0.1 [::1]:5353 valid=30s; |
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269 </example> |
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270 <note> |
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271 Эта директива доступна как часть |
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272 <commercial_version>коммерческой подписки</commercial_version>. |
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273 </note> |
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274 </para> |
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275 |
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276 </directive> |
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277 |
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278 |
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279 <directive name="resolver_timeout"> |
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280 <syntax><value>время</value></syntax> |
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281 <default>30s</default> |
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282 <context>stream</context> |
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283 <context>server</context> |
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284 |
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285 <para> |
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286 Задаёт таймаут для преобразования имени в адрес, например: |
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287 <example> |
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288 resolver_timeout 5s; |
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289 </example> |
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290 <note> |
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291 Эта директива доступна как часть |
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292 <commercial_version>коммерческой подписки</commercial_version>. |
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293 </note> |
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294 </para> |
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295 |
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296 </directive> |
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297 |
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298 |
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299 <directive name="server"> |
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300 <syntax block="yes"/> |
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301 <default/> |
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302 <context>stream</context> |
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303 |
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304 <para> |
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305 Задаёт конфигурацию для сервера. |
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306 </para> |
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307 |
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308 </directive> |
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309 |
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310 |
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311 <directive name="stream"> |
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312 <syntax block="yes"/> |
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313 <default/> |
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314 <context>main</context> |
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315 |
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316 <para> |
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317 Предоставляет контекст конфигурационного файла, в котором указываются |
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318 директивы stream-сервера. |
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319 </para> |
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320 |
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321 </directive> |
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322 |
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323 |
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324 <directive name="tcp_nodelay"> |
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325 <syntax><literal>on</literal> | <literal>off</literal></syntax> |
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326 <default>on</default> |
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327 <context>stream</context> |
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328 <context>server</context> |
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329 <appeared-in>1.9.4</appeared-in> |
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330 |
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331 <para> |
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332 Разрешает или запрещает использование параметра <c-def>TCP_NODELAY</c-def>. |
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333 Параметр включается как для клиентского соединения, |
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334 так и для соединения с проксируемым сервером. |
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335 </para> |
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336 |
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337 </directive> |
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338 |
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339 </section> |
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340 |
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341 </module> |