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Added subchapter in the "Debugging log" article.
author Yaroslav Zhuravlev <yar@nginx.com>
date Wed, 08 Apr 2015 13:49:40 +0300
parents 764fbac1b8b4
children c79501e16e26
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1 <!--
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2 Copyright (C) Igor Sysoev
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3 Copyright (C) Nginx, Inc.
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4 -->
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5
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6 <!DOCTYPE article SYSTEM "../../../dtd/article.dtd">
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7
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8 <article name="A debugging log"
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9 link="/en/docs/debugging_log.html"
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10 lang="en"
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11 rev="2">
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14 <section>
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15
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16 <para>
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17 To enable a debugging log, nginx needs to be configured to support
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18 debugging during the build:
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20 <programlisting>
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21 ./configure --with-debug ...
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22 </programlisting>
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23
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24 Then the <literal>debug</literal> level should be set with the
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25 <link doc="ngx_core_module.xml" id="error_log"/> directive:
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27 <programlisting>
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28 error_log /path/to/log debug;
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29 </programlisting>
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31 The nginx binary version for Windows is always built with the debugging log
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32 support, so only setting the <literal>debug</literal> level will suffice.
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33 </para>
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34
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35 <para>
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36 Note that redefining the log without also specifying the
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37 <literal>debug</literal>
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38 level will disable the debugging log.
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39 In the example below, redefining the log on the
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40 <link doc="http/ngx_http_core_module.xml" id="server"/>
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41 level disables the debugging log for this server:
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42 <programlisting>
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43 error_log /path/to/log debug;
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45 http {
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46 server {
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47 error_log /path/to/log;
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48 ...
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49 </programlisting>
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50 To avoid this, either the line redefining the log should be
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51 commented out, or the <literal>debug</literal> level specification should
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52 also be added:
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53 <programlisting>
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54 error_log /path/to/log debug;
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56 http {
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57 server {
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58 error_log /path/to/log debug;
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59 ...
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60 </programlisting>
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61 </para>
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62
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63 </section>
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66 <section id="clients" name="Debugging log for selected clients">
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67
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68 <para>
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69 It is also possible to enable the debugging log for
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70 <link doc="ngx_core_module.xml" id="debug_connection">selected
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71 client addresses</link> only:
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73 <programlisting>
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74 error_log /path/to/log;
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76 events {
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77 debug_connection 192.168.1.1;
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78 debug_connection 192.168.10.0/24;
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79 }
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80 </programlisting>
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81 </para>
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82
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83 </section>
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84
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85 </article>