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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1045321 13f79535-47bb-0310-9956-ffa450edef68
163 lines
6.3 KiB
XML
163 lines
6.3 KiB
XML
<?xml version="1.0"?>
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<!DOCTYPE modulesynopsis SYSTEM "../style/modulesynopsis.dtd">
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<?xml-stylesheet type="text/xsl" href="../style/manual.en.xsl"?>
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<!-- $LastChangedRevision$ -->
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<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<modulesynopsis metafile="mod_unixd.xml.meta">
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<name>mod_unixd</name>
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<description>Basic (required) security for Unix-family platforms.</description>
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<status>Base</status>
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<seealso><a href="../suexec.html">suEXEC support</a></seealso>
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<directivesynopsis>
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<name>Group</name>
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<description>Group under which the server will answer
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requests</description>
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<syntax>Group <var>unix-group</var></syntax>
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<default>Group #-1</default>
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<contextlist><context>server config</context></contextlist>
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<compatibility>Only valid in global server config since Apache
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2.0</compatibility>
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<usage>
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<p>The <directive>Group</directive> directive sets the group under
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which the server will answer requests. In order to use this
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directive, the server must be run initially as <code>root</code>. If
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you start the server as a non-root user, it will fail to change to the
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specified group, and will instead continue to run as the group of the
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original user. <var>Unix-group</var> is one of:</p>
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<dl>
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<dt>A group name</dt>
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<dd>Refers to the given group by name.</dd>
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<dt><code>#</code> followed by a group number.</dt>
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<dd>Refers to a group by its number.</dd>
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</dl>
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<example><title>Example</title>
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Group www-group
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</example>
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<p>It is recommended that you set up a new group specifically for
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running the server. Some admins use user <code>nobody</code>,
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but this is not always possible or desirable.</p>
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<note type="warning"><title>Security</title>
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<p>Don't set <directive>Group</directive> (or <directive
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module="mod_unixd">User</directive>) to <code>root</code> unless
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you know exactly what you are doing, and what the dangers are.</p>
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</note>
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</usage>
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<seealso><directive module="mod_privileges">VHostGroup</directive></seealso>
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<seealso><directive module="mod_suexec">SuexecUserGroup</directive></seealso>
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</directivesynopsis>
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<directivesynopsis>
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<name>User</name>
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<description>The userid under which the server will answer
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requests</description>
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<syntax>User <var>unix-userid</var></syntax>
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<default>User #-1</default>
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<contextlist><context>server config</context></contextlist>
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<compatibility>Only valid in global server config since Apache
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2.0</compatibility>
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<usage>
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<p>The <directive>User</directive> directive sets the user ID as
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which the server will answer requests. In order to use this
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directive, the server must be run initially as <code>root</code>.
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If you start the server as a non-root user, it will fail to change
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to the lesser privileged user, and will instead continue to run as
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that original user. If you do start the server as <code>root</code>,
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then it is normal for the parent process to remain running as root.
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<var>Unix-userid</var> is one of:</p>
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<dl>
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<dt>A username</dt>
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<dd>Refers to the given user by name.</dd>
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<dt># followed by a user number.</dt>
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<dd>Refers to a user by its number.</dd>
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</dl>
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<p>The user should have no privileges that result in it being
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able to access files that are not intended to be visible to the
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outside world, and similarly, the user should not be able to
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execute code that is not meant for HTTP requests. It is
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recommended that you set up a new user and group specifically for
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running the server. Some admins use user <code>nobody</code>, but
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this is not always desirable, since the <code>nobody</code> user
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can have other uses on the system.</p>
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<note type="warning"><title>Security</title>
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<p>Don't set <directive>User</directive> (or <directive
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module="mod_unixd">Group</directive>) to <code>root</code> unless
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you know exactly what you are doing, and what the dangers are.</p>
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</note>
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</usage>
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<seealso><directive module="mod_privileges">VHostUser</directive></seealso>
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<seealso><directive module="mod_suexec">SuexecUserGroup</directive></seealso>
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</directivesynopsis>
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<directivesynopsis>
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<name>ChrootDir</name>
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<description>Directory for apache to run chroot(8) after startup.</description>
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<syntax>ChrootDir <var>/path/to/directory</var></syntax>
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<default>none</default>
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<contextlist><context>server config</context></contextlist>
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<modulelist><module>mod_unixd</module></modulelist>
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<compatibility>Available in Apache 2.2.10 and later</compatibility>
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<usage>
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<p>This directive tells the server to <var>chroot(8)</var> to the
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specified directory after startup, but before accepting requests
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over the 'net.</p>
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<p>Note that running the server under chroot is not simple,
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and requires additional setup, particularly if you are running
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scripts such as CGI or PHP. Please make sure you are properly
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familiar with the operation of chroot before attempting to use
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this feature.</p>
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</usage>
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</directivesynopsis>
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<directivesynopsis>
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<name>Suexec</name>
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<description>Enable or disable the suEXEC feature</description>
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<syntax>Suexec On|Off</syntax>
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<default>On if suexec binary exists with proper owner and mode,
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Off otherwise</default>
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<contextlist><context>server config</context></contextlist>
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<compatibility>Available in Apache httpd 2.3.9 and later</compatibility>
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<usage>
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<p>When On, startup will fail if the suexec binary doesn't exist
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or has an invalid owner or file mode.</p>
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<p>When Off, suEXEC will be disabled even if the suexec binary exists
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and has a valid owner and file mode.</p>
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</usage>
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</directivesynopsis>
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</modulesynopsis>
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