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<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!DOCTYPE document [
<!ENTITY project SYSTEM "project.xml">
]>
<document url="server.html">
&project;
<properties>
<title>The Server Component</title>
</properties>
<body>
<section name="Table of Contents">
<toc/>
</section>
<section name="Introduction">
<p>A <strong>Server</strong> element represents the entire Catalina
servlet container. Therefore, it must be the single outermost element
in the <code>conf/server.xml</code> configuration file. Its attributes
represent the characteristics of the servlet container as a whole.</p>
</section>
<section name="Attributes">
<subsection name="Common Attributes">
<p>All implementations of <strong>Server</strong>
support the following attributes:</p>
<attributes>
<attribute name="className" required="false">
<p>Java class name of the implementation to use. This class must
implement the <code>org.apache.catalina.Server</code> interface.
If no class name is specified, the standard implementation will
be used.</p>
</attribute>
<attribute name="address" required="false">
<p>The TCP/IP address on which this server waits for a shutdown
command. If no address is specified, <code>localhost</code> is used.</p>
</attribute>
<attribute name="port" required="true">
<p>The TCP/IP port number on which this server waits for a shutdown
command. Set to <code>-1</code> to disable the shutdown port.</p>
<p>Note: Disabling the shutdown port works well when Tomcat is started
using <a href="https://commons.apache.org/daemon/">Apache Commons Daemon</a>
(running as a service on Windows or with jsvc on un*xes). It cannot be
used when running Tomcat with the standard shell scripts though, as it
will prevent shutdown.bat|.sh and catalina.bat|.sh from stopping it
gracefully.</p>
</attribute>
<attribute name="portOffset" required="false">
<p>The offset to apply to <code>port</code> and to the ports of any
nested connectors. It must be a non-negative integer. If not specified,
the default value of <code>0</code> is used.</p>
</attribute>
<attribute name="shutdown" required="true">
<p>The command string that must be received via a TCP/IP connection
to the specified port number, in order to shut down Tomcat.</p>
</attribute>
<attribute name="utilityThreads" required="false">
<p>The number of threads this <strong>Service</strong> will use for
various utility tasks, including recurring ones. The special value
of 0 will result in the value of
<code>Runtime.getRuntime().availableProcessors()</code> being
used. Negative values will result in
<code>Runtime.getRuntime().availableProcessors() + value</code> being
used unless this is less than 1 in which case 1 thread will be used.
The default value is 1.
</p>
</attribute>
</attributes>
</subsection>
<subsection name="Standard Implementation">
<p>The standard implementation of <strong>Server</strong> is
<strong>org.apache.catalina.core.StandardServer</strong>.
It supports the following additional attributes (in addition to the
common attributes listed above):</p>
<attributes>
<attribute name="utilityThreadsAsDaemon" required="false">
<p>Set the daemon flag value for the utility threads. The default value
is <code>false</code>.
</p>
</attribute>
<attribute name="periodicEventDelay" required="false">
<p>This value represents the delay in seconds between periodic
lifecycle event invocation of the lifecycle listeners configured on this
Server. The value is in seconds, and a negative or zero value will
disable the invocations. If not specified, the default value for this
attribute is 10 seconds.</p>
</attribute>
</attributes>
</subsection>
</section>
<section name="Nested Components">
<p>The following components may be nested inside a <strong>Server</strong>
element:</p>
<ul>
<li><a href="service.html"><strong>Service</strong></a> -
One or more service element.</li>
<li><a href="globalresources.html"><strong>GlobalNamingResources</strong></a> -
Configure the JNDI global resources for the server.</li>
</ul>
</section>
<section name="Special Features">
<p>There are no special features associated with a <strong>Server</strong>.
</p>
</section>
</body>
</document>
|
