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8 <title>Server-Wide Configuration - Apache HTTP Server</title>
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18 <p class="apache">Apache HTTP Server Version 2.5</p>
19 <img alt="" src="./images/feather.gif" /></div>
20 <div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div>
22 <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="./">Version 2.5</a></div><div id="page-content"><div id="preamble"><h1>Server-Wide Configuration</h1>
24 <p><span>Available Languages: </span><a href="./en/server-wide.html" title="English"> en </a> |
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31 <p>This document explains some of the directives provided by
32 the <code class="module"><a href="./mod/core.html">core</a></code> server which are used to configure
33 the basic operations of the server.</p>
35 <div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#identification">Server Identification</a></li>
36 <li><img alt="" src="./images/down.gif" /> <a href="#locations">File Locations</a></li>
37 <li><img alt="" src="./images/down.gif" /> <a href="#resource">Limiting Resource Usage</a></li>
38 <li><img alt="" src="./images/down.gif" /> <a href="#implementation">Implementation Choices</a></li>
40 <div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
42 <h2><a name="identification" id="identification">Server Identification</a></h2>
45 <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td /><td><ul><li><code class="directive"><a href="./mod/core.html#servername">ServerName</a></code></li><li><code class="directive"><a href="./mod/core.html#serveradmin">ServerAdmin</a></code></li><li><code class="directive"><a href="./mod/core.html#serversignature">ServerSignature</a></code></li><li><code class="directive"><a href="./mod/core.html#servertokens">ServerTokens</a></code></li><li><code class="directive"><a href="./mod/core.html#usecanonicalname">UseCanonicalName</a></code></li><li><code class="directive"><a href="./mod/core.html#usecanonicalphysicalport">UseCanonicalPhysicalPort</a></code></li></ul></td></tr></table>
47 <p>The <code class="directive"><a href="./mod/core.html#serveradmin">ServerAdmin</a></code> and
48 <code class="directive"><a href="./mod/core.html#servertokens">ServerTokens</a></code> directives
49 control what information about the server will be presented
50 in server-generated documents such as error messages. The
51 <code class="directive"><a href="./mod/core.html#servertokens">ServerTokens</a></code> directive
52 sets the value of the Server HTTP response header field.</p>
54 <p>The <code class="directive"><a href="./mod/core.html#servername">ServerName</a></code>,
55 <code class="directive"><a href="./mod/core.html#usecanonicalname">UseCanonicalName</a></code> and
56 <code class="directive"><a href="./mod/core.html#usecanonicalphysicalport">UseCanonicalPhysicalPort</a></code>
57 directives are used by the server to determine how to construct
58 self-referential URLs. For example, when a client requests a
59 directory, but does not include the trailing slash in the
60 directory name, httpd must redirect the client to the full
61 name including the trailing slash so that the client will
62 correctly resolve relative references in the document.</p>
63 </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
65 <h2><a name="locations" id="locations">File Locations</a></h2>
68 <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td /><td><ul><li><code class="directive"><a href="./mod/mpm_common.html#coredumpdirectory">CoreDumpDirectory</a></code></li><li><code class="directive"><a href="./mod/core.html#documentroot">DocumentRoot</a></code></li><li><code class="directive"><a href="./mod/core.html#errorlog">ErrorLog</a></code></li><li><code class="directive"><a href="./mod/core.html#mutex">Mutex</a></code></li><li><code class="directive"><a href="./mod/mpm_common.html#pidfile">PidFile</a></code></li><li><code class="directive"><a href="./mod/mpm_common.html#scoreboardfile">ScoreBoardFile</a></code></li><li><code class="directive"><a href="./mod/core.html#serverroot">ServerRoot</a></code></li></ul></td></tr></table>
70 <p>These directives control the locations of the various files
71 that httpd needs for proper operation. When the pathname used
72 does not begin with a slash (/), the files are located relative
73 to the <code class="directive"><a href="./mod/core.html#serverroot">ServerRoot</a></code>. Be careful
74 about locating files in paths which are writable by non-root users.
75 See the <a href="misc/security_tips.html#serverroot">security tips</a>
76 documentation for more details.</p>
77 </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
79 <h2><a name="resource" id="resource">Limiting Resource Usage</a></h2>
82 <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td /><td><ul><li><code class="directive"><a href="./mod/core.html#limitrequestbody">LimitRequestBody</a></code></li><li><code class="directive"><a href="./mod/core.html#limitrequestfields">LimitRequestFields</a></code></li><li><code class="directive"><a href="./mod/core.html#limitrequestfieldsize">LimitRequestFieldsize</a></code></li><li><code class="directive"><a href="./mod/core.html#limitrequestline">LimitRequestLine</a></code></li><li><code class="directive"><a href="./mod/core.html#rlimitcpu">RLimitCPU</a></code></li><li><code class="directive"><a href="./mod/core.html#rlimitmem">RLimitMEM</a></code></li><li><code class="directive"><a href="./mod/core.html#rlimitnproc">RLimitNPROC</a></code></li><li><code class="directive"><a href="./mod/mpm_common.html#threadstacksize">ThreadStackSize</a></code></li></ul></td></tr></table>
84 <p>The <code class="directive">LimitRequest</code>*
85 directives are used to place limits on the amount of resources
86 httpd will use in reading requests from clients. By limiting
87 these values, some kinds of denial of service attacks can be
90 <p>The <code class="directive">RLimit</code>* directives
91 are used to limit the amount of resources which can be used by
92 processes forked off from the httpd children. In particular,
93 this will control resources used by CGI scripts and SSI exec
96 <p>The <code class="directive"><a href="./mod/mpm_common.html#threadstacksize">ThreadStackSize</a></code>
97 directive is used with some platforms to control the stack size.</p>
98 </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
100 <h2><a name="implementation" id="implementation">Implementation Choices</a></h2>
103 <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td /><td><ul><li><code class="directive"><a href="./mod/core.html#mutex">Mutex</a></code></li></ul></td></tr></table>
105 <p>The <code class="directive">Mutex</code> directive can be used to change
106 the underlying implementation used for mutexes, in order to relieve
107 functional or performance problems with <a class="glossarylink" href="./glossary.html#apr" title="see glossary">APR</a>'s
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111 <p><span>Available Languages: </span><a href="./en/server-wide.html" title="English"> en </a> |
112 <a href="./fr/server-wide.html" hreflang="fr" rel="alternate" title="Français"> fr </a> |
113 <a href="./ja/server-wide.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
114 <a href="./ko/server-wide.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> |
115 <a href="./tr/server-wide.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p>
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