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+<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat 8 (8.0.0-dev) - Monitoring and Managing Tomcat</title><meta name="author" content="Peter Rossbach"><meta name="author" content="Remy Maucherat"><style type="text/css" media="print">
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+ </style></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img src="./images/tomcat.gif" align="right" alt="
+ The Apache Tomcat Servlet/JSP Container
+ " border="0"></a></td><td><h1><font face="arial,helvetica,sanserif">Apache Tomcat 8</font></h1><font face="arial,helvetica,sanserif">Version 8.0.0-dev, Dec 5 2012</font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img src="./images/asf-logo.gif" align="right" alt="Apache Logo" border="0"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr noshade size="1"></td></tr><tr><!--LEFT SIDE NAVIGATION--><td width="20%" valign="top" nowrap class="noPrint"><p><strong>Links</strong></p><ul><li><a href="index.html">Docs Home</a></li><li><a href="http://wiki.apache.org/tomcat/FAQ">FAQ</a></li><li><a href="#comments_section">User Comments</a></li></ul><p><strong>User Guide</strong></p><ul><li><a href="introduction.html">1) Introduction</a></li><li><a href="setup.html">2) Setup</a></li><li><a href="appdev/index.html">3) First webapp</a></li><li><a href="deployer-howto.html">4) Deployer</a></li><li><a href="
manager-howto.html">5) Manager</a></li><li><a href="realm-howto.html">6) Realms and AAA</a></li><li><a href="security-manager-howto.html">7) Security Manager</a></li><li><a href="jndi-resources-howto.html">8) JNDI Resources</a></li><li><a href="jndi-datasource-examples-howto.html">9) JDBC DataSources</a></li><li><a href="class-loader-howto.html">10) Classloading</a></li><li><a href="jasper-howto.html">11) JSPs</a></li><li><a href="ssl-howto.html">12) SSL</a></li><li><a href="ssi-howto.html">13) SSI</a></li><li><a href="cgi-howto.html">14) CGI</a></li><li><a href="proxy-howto.html">15) Proxy Support</a></li><li><a href="mbeans-descriptor-howto.html">16) MBean Descriptor</a></li><li><a href="default-servlet.html">17) Default Servlet</a></li><li><a href="cluster-howto.html">18) Clustering</a></li><li><a href="balancer-howto.html">19) Load Balancer</a></li><li><a href="connectors.html">20) Connectors</a></li><li><a href="monitoring.html">21) Monitoring and Management</a></li><li
><a href="logging.html">22) Logging</a></li><li><a href="apr.html">23) APR/Native</a></li><li><a href="virtual-hosting-howto.html">24) Virtual Hosting</a></li><li><a href="aio.html">25) Advanced IO</a></li><li><a href="extras.html">26) Additional Components</a></li><li><a href="maven-jars.html">27) Mavenized</a></li><li><a href="security-howto.html">28) Security Considerations</a></li><li><a href="windows-service-howto.html">29) Windows Service</a></li><li><a href="windows-auth-howto.html">30) Windows Authentication</a></li><li><a href="jdbc-pool.html">31) Tomcat's JDBC Pool</a></li><li><a href="web-socket-howto.html">32) WebSocket</a></li></ul><p><strong>Reference</strong></p><ul><li><a href="RELEASE-NOTES.txt">Release Notes</a></li><li><a href="config/index.html">Configuration</a></li><li><a href="api/index.html">Tomcat Javadocs</a></li><li><a href="servletapi/index.html">Servlet Javadocs</a></li><li><a href="jspapi/index.html">JSP 2.2 Javadocs</a></li><li><a href="elapi/i
ndex.html">EL 2.2 Javadocs</a></li><li><a href="http://tomcat.apache.org/connectors-doc/">JK 1.2 Documentation</a></li></ul><p><strong>Apache Tomcat Development</strong></p><ul><li><a href="building.html">Building</a></li><li><a href="changelog.html">Changelog</a></li><li><a href="http://wiki.apache.org/tomcat/TomcatVersions">Status</a></li><li><a href="developers.html">Developers</a></li><li><a href="architecture/index.html">Architecture</a></li><li><a href="funcspecs/index.html">Functional Specs.</a></li><li><a href="tribes/index.html">Tribes</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left" id="mainBody"><h1>Monitoring and Managing Tomcat</h1><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Table of Contents"><!--()--></a><a name="Table_of_Contents"><strong>Table of Contents</strong></a></font></td></tr><tr><td><blockquote>
+<ul><li><a href="#Introduction">Introduction</a></li><li><a href="#Enabling_JMX_Remote">Enabling JMX Remote</a></li><li><a href="#Manage_Tomcat_with_JMX_remote_Ant_Tasks">Manage Tomcat with JMX remote Ant Tasks</a></li><li><a href="#JMXAccessorOpenTask_-_JMX_open_connection_task">JMXAccessorOpenTask - JMX open connection task</a></li><li><a href="#JMXAccessorGetTask:__get_attribute_value_Ant_task">JMXAccessorGetTask: get attribute value Ant task</a></li><li><a href="#JMXAccessorSetTask:__set_attribute_value_Ant_task">JMXAccessorSetTask: set attribute value Ant task</a></li><li><a href="#JMXAccessorInvokeTask:__invoke_MBean_operation_Ant_task">JMXAccessorInvokeTask: invoke MBean operation Ant task</a></li><li><a href="#JMXAccessorQueryTask:__query_MBean_Ant_task">JMXAccessorQueryTask: query MBean Ant task</a></li><li><a href="#JMXAccessorCreateTask:__remote_create_MBean_Ant_task">JMXAccessorCreateTask: remote create MBean Ant task</a></li><li><a href="#JMXAccessorUnregis
terTask:__remote_unregister_MBean_Ant_task">JMXAccessorUnregisterTask: remote unregister MBean Ant task</a></li><li><a href="#JMXAccessorCondition:__express_condition">JMXAccessorCondition: express condition</a></li><li><a href="#JMXAccessorEqualsCondition:__equals_MBean_Ant_condition">JMXAccessorEqualsCondition: equals MBean Ant condition</a></li><li><a href="#Using_the_JMXProxyServlet">Using the JMXProxyServlet</a></li></ul>
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote>
+
+ <p>Monitoring is a key aspect of system administration. Looking inside a
+ running server, obtaining some statistics or reconfiguring some aspects of
+ an application are all daily administration tasks.</p>
+
+ </blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Enabling JMX Remote"><!--()--></a><a name="Enabling_JMX_Remote"><strong>Enabling JMX Remote</strong></a></font></td></tr><tr><td><blockquote>
+
+ <p>The Sun website includes the list of options and how to configure JMX Remote on Java 5:
+ <a href="http://docs.oracle.com/javase/6/docs/technotes/guides/management/agent.html">
+ http://docs.oracle.com/javase/6/docs/technotes/guides/management/agent.html</a>.
+ </p>
+ <p>The following is a quick configuration guide for Java 6:</p>
+ <p>Add the following parameters to your Tomcat startup script:
+ <div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ set CATALINA_OPTS=-Dcom.sun.management.jmxremote \
+ -Dcom.sun.management.jmxremote.port=%my.jmx.port% \
+ -Dcom.sun.management.jmxremote.ssl=false \
+ -Dcom.sun.management.jmxremote.authenticate=false
+ </pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+ </p>
+ <p>
+ <ol>
+ <li>If you require authorization, add and change this :
+ <div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ -Dcom.sun.management.jmxremote.authenticate=true \
+ -Dcom.sun.management.jmxremote.password.file=../conf/jmxremote.password \
+ -Dcom.sun.management.jmxremote.access.file=../conf/jmxremote.access \
+ </pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+ </li>
+ <li>edit the access authorization file <em>$CATALINA_BASE/conf/jmxremote.access</em> :
+ <div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+monitorRole readonly
+controlRole readwrite
+ </pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+ </li>
+ <li>edit the password file <em>$CATALINA_BASE/conf/jmxremote.password</em> :
+ <div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+monitorRole tomcat
+controlRole tomcat
+ </pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+ <b>Tip</b>: The password file should be read-only and only accessible by the
+ operating system user Tomcat is running as.
+ </li>
+ </ol>
+ <b>Note:</b>The JSR 160 JMX-Adaptor opens a second data channel on a random
+ port. That is a problem when you have a local firewall installed.<br>
+ </p>
+
+ </blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Manage Tomcat with JMX remote Ant Tasks"><!--()--></a><a name="Manage_Tomcat_with_JMX_remote_Ant_Tasks"><strong>Manage Tomcat with JMX remote Ant Tasks</strong></a></font></td></tr><tr><td><blockquote>
+ <p>To simplify JMX usage with Ant 1.6.x, a set of tasks is provided that may
+ be used with antlib.</p>
+ <p><b>antlib</b>: Copy your catalina-ant.jar from $CATALINA_HOME/lib to $ANT_HOME/lib.</p>
+ <p>The following example shows the JMX Accessor usage:</p>
+ <table border="1">
+ <tr><td><p><pre>
+<project name="Catalina Ant JMX"
+ xmlns:jmx="antlib:org.apache.catalina.ant.jmx"
+ default="state"
+ basedir=".">
+ <property name="jmx.server.name" value="localhost" />
+ <property name="jmx.server.port" value="9012" />
+ <property name="cluster.server.address" value="192.168.1.75" />
+ <property name="cluster.server.port" value="9025" />
+
+ <target name="state" description="Show JMX Cluster state">
+ <jmx:open
+ host="${jmx.server.name}"
+ port="${jmx.server.port}"
+ username="controlRole"
+ password="tomcat"/>
+ <jmx:get
+ name="Catalina:type=IDataSender,host=localhost,senderAddress=${cluster.server.address},senderPort=${cluster.server.port}"
+ attribute="connected"
+ resultproperty="IDataSender.backup.connected"
+ echo="false"
+ />
+ <jmx:get
+ name="Catalina:type=ClusterSender,host=localhost"
+ attribute="senderObjectNames"
+ resultproperty="senderObjectNames"
+ echo="false"
+ />
+ <!-- get current maxActiveSession from ClusterTest application
+ echo it to Ant output and store at
+ property <em>clustertest.maxActiveSessions.orginal</em>
+ -->
+ <jmx:get
+ name="Catalina:type=Manager,context=/ClusterTest,host=localhost"
+ attribute="maxActiveSessions"
+ resultproperty="clustertest.maxActiveSessions.orginal"
+ echo="true"
+ />
+ <!-- set maxActiveSession to 100
+ -->
+ <jmx:set
+ name="Catalina:type=Manager,context=/ClusterTest,host=localhost"
+ attribute="maxActiveSessions"
+ value="100"
+ type="int"
+ />
+ <!-- get all sessions and split result as delimiter <em>SPACE</em> for easy
+ access all session ids directly with Ant property sessions.[0..n].
+ -->
+ <jmx:invoke
+ name="Catalina:type=Manager,context=/ClusterTest,host=localhost"
+ operation="listSessionIds"
+ resultproperty="sessions"
+ echo="false"
+ delimiter=" "
+ />
+ <!-- Access session attribute <em>Hello</em> from first session.
+ -->
+ <jmx:invoke
+ name="Catalina:type=Manager,context=/ClusterTest,host=localhost"
+ operation="getSessionAttribute"
+ resultproperty="Hello"
+ echo="false"
+ >
+ <arg value="${sessions.0}"/>
+ <arg value="Hello"/>
+ </jmx:invoke>
+ <!-- Query for all application manager.of the server from all hosts
+ and bind all attributes from all found manager MBeans.
+ -->
+ <jmx:query
+ name="Catalina:type=Manager,*"
+ resultproperty="manager"
+ echo="true"
+ attributebinding="true"
+ />
+ <!-- echo the create properties -->
+ <echo>
+ senderObjectNames: ${senderObjectNames.0}
+ IDataSender.backup.connected: ${IDataSender.backup.connected}
+ session: ${sessions.0}
+ manager.length: ${manager.length}
+ manager.0.name: ${manager.0.name}
+ manager.1.name: ${manager.1.name}
+ hello: ${Hello}
+ manager.ClusterTest.0.name: ${manager.ClusterTest.0.name}
+ manager.ClusterTest.0.activeSessions: ${manager.ClusterTest.0.activeSessions}
+ manager.ClusterTest.0.counterSend_EVT_SESSION_EXPIRED: ${manager.ClusterTest.0.counterSend_EVT_SESSION_EXPIRED}
+ manager.ClusterTest.0.counterSend_EVT_GET_ALL_SESSIONS: ${manager.ClusterTest.0.counterSend_EVT_GET_ALL_SESSIONS}
+ </echo>
+
+ </target>
+
+</project>
+ </pre></p>
+ </td></tr>
+</table>
+ <p><b>import:</b> Import the JMX Accessor Project with
+ <em><import file="${CATALINA.HOME}/bin/catalina-tasks.xml" /></em> and
+ reference the tasks with <em>jmxOpen</em>, <em>jmxSet</em>, <em>jmxGet</em>,
+ <em>jmxQuery</em>, <em>jmxInvoke</em>, <em>jmxEquals</em> and <em>jmxCondition</em>.</p>
+
+ </blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorOpenTask - JMX open connection task"><!--()--></a><a name="JMXAccessorOpenTask_-_JMX_open_connection_task"><strong>JMXAccessorOpenTask - JMX open connection task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>url</td>
+ <td>Set JMX connection URL - <em>service:jmx:rmi:///jndi/rmi://localhost:8050/jmxrmi</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>host</td>
+ <td>Set the host, shortcut the very long URL syntax.
+ </td>
+ <td><code>localhost</code></td>
+ </tr>
+
+ <tr>
+ <td>port</td>
+ <td>Set the remote connection port
+ </td>
+ <td><code>8050</code></td>
+ </tr>
+
+ <tr>
+ <td>username</td>
+ <td>remote JMX connection user name.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>password</td>
+ <td>remote JMX connection password.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>Name of the internal connection reference. With this attribute you can
+ configure more the one connection inside the same Ant project.
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo the command usage (for access analysis or debugging)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+ <tr>
+ <td>if</td>
+ <td>Only execute if a property of the given name <b>exists</b> in the current project.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>unless</td>
+ <td>Only execute if a property of the given name <b>not exists</b> in the current project.
+ </td>
+ <td></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Example to open a new JMX connection<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:open
+ host="${jmx.server.name}"
+ port="${jmx.server.port}"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+<p>
+Example to open a JMX connection from URL, with authorization and
+store at other reference <br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:open
+ url="service:jmx:rmi:///jndi/rmi://localhost:9024/jmxrmi"
+ ref="jmx.server.9024"
+ username="controlRole"
+ password="tomcat"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+
+<p>
+Example to open a JMX connection from URL, with authorization and
+store at other reference, but only when property <em>jmx.if</em> exists and
+<em>jmx.unless</em> not exists<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:open
+ url="service:jmx:rmi:///jndi/rmi://localhost:9024/jmxrmi"
+ ref="jmx.server.9024"
+ username="controlRole"
+ password="tomcat"
+ if="jmx.if"
+ unless="jmx.unless"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+<p><b>Note</b>: All properties from <em>jmxOpen</em> task also exists at all
+other tasks and conditions.
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorGetTask: get attribute value Ant task"><!--()--></a><a name="JMXAccessorGetTask:__get_attribute_value_Ant_task"><strong>JMXAccessorGetTask: get attribute value Ant task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=Server</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>attribute</td>
+ <td>Existing MBean attribute (see Tomcat MBean description above)
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>JMX Connection reference
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo command usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+ <tr>
+ <td>resultproperty</td>
+ <td>Save result at this project property
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>delimiter</td>
+ <td>Split result with delimiter (java.util.StringTokenizier)
+ and use resultproperty as prefix to store tokens.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>separatearrayresults</td>
+ <td>When return value is an array, save result as property list
+ (<em>$resultproperty.[0..N]</em> and <em>$resultproperty.length</em>)
+ </td>
+ <td><code>true</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Example to get remote MBean attribute from default JMX connection <br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:get
+ name="Catalina:type=Manager,context=/servlets-examples,host=localhost"
+ attribute="maxActiveSessions"
+ resultproperty="servlets-examples.maxActiveSessions"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+<p>
+Example to get and result array and split it at separate properties<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:get
+ name="Catalina:type=ClusterSender,host=localhost"
+ attribute="senderObjectNames"
+ resultproperty="senderObjectNames"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Access the senderObjectNames properties with:
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ ${senderObjectNames.length} give the number of returned sender list.
+ ${senderObjectNames.[0..N]} found all sender object names
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+
+<p>
+Example to get IDataSender attribute connected only when cluster is configured.
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+<jmx:query
+ failonerror="false"
+ name="Catalina:type=Cluster,host=${tomcat.application.host}"
+ resultproperty="cluster"
+/>
+<jmx:get
+ name="Catalina:type=IDataSender,host=${tomcat.application.host},senderAddress=${cluster.backup.address},senderPort=${cluster.backup.port}"
+ attribute="connected"
+ resultproperty="datasender.connected"
+ if="cluster.0.name" />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorSetTask: set attribute value Ant task"><!--()--></a><a name="JMXAccessorSetTask:__set_attribute_value_Ant_task"><strong>JMXAccessorSetTask: set attribute value Ant task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=Server</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>attribute</td>
+ <td>Existing MBean attribute (see Tomcat MBean description above)
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>value</td>
+ <td>value that set to attribute
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>type</td>
+ <td>type of the attribute.
+ </td>
+ <td>java.lang.String</td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>JMX Connection reference
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo command usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Example to set remote MBean attribute value<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:set
+ name="Catalina:type=Manager,context=/servlets-examples,host=localhost"
+ attribute="maxActiveSessions"
+ value="500"
+ type="int"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorInvokeTask: invoke MBean operation Ant task"><!--()--></a><a name="JMXAccessorInvokeTask:__invoke_MBean_operation_Ant_task"><strong>JMXAccessorInvokeTask: invoke MBean operation Ant task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=Server</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>operation</td>
+ <td>Existing MBean operation (see Tomcat
+ <a href="funcspecs/fs-admin-opers.html">funcspecs/fs-admin-opers.html</a>).
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>JMX Connection reference
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo command usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+ <tr>
+ <td>resultproperty</td>
+ <td>Save result at this project property
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>delimiter</td>
+ <td>Split result with delimiter (java.util.StringTokenizier)
+ and use resultproperty as prefix to store tokens.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>separatearrayresults</td>
+ <td>When return value is an array, save result as property list
+ (<em>$resultproperty.[0..N]</em> and <em>$resultproperty.length</em>)
+ </td>
+ <td><code>true</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+stop an application <br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:invoke
+ name="Catalina:type=Manager,context=/servlets-examples,host=localhost"
+ operation="stop"/>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Now you can find the sessionid at <em>${sessions.[0..N}</em> properties and access the count
+with ${sessions.length} property.
+</p>
+<p>
+Example to get all sessionids <br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:invoke
+ name="Catalina:type=Manager,context=/servlets-examples,host=localhost"
+ operation="listSessionIds"
+ resultproperty="sessions"
+ delimiter=" "
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Now you can find the sessionid at <em>${sessions.[0..N}</em> properties and access the count
+with ${sessions.length} property.
+</p>
+<p>
+Example to get remote MBean session attribute from session ${sessionid.0}<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:invoke
+ name="Catalina:type=Manager,context=/ClusterTest,host=localhost"
+ operation="getSessionAttribute"
+ resultproperty="hello">
+ <arg value="${sessionid.0}"/>
+ <arg value="Hello" />
+ </jmx:invoke>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+<p>
+Example to create a new access logger valve at vhost <em>localhost</em>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:invoke
+ name="Catalina:type=MBeanFactory"
+ operation="createAccessLoggerValve"
+ resultproperty="accessLoggerObjectName"
+ >
+ <arg value="Catalina:type=Host,host=localhost"/>
+ </jmx:invoke>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Now you can find new MBean with name stored at <em>${accessLoggerObjectName}</em>
+property.
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorQueryTask: query MBean Ant task"><!--()--></a><a name="JMXAccessorQueryTask:__query_MBean_Ant_task"><strong>JMXAccessorQueryTask: query MBean Ant task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>JMX ObjectName query string -- <em>Catalina:type=Manager,*</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>JMX Connection reference
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo command usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+ <tr>
+ <td>resultproperty</td>
+ <td>Prefix project property name to all founded MBeans (<em>mbeans.[0..N].objectname</em>)
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>attributebinduing</td>
+ <td>bind ALL MBean attributes in addition to <em>name</em>
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+ <tr>
+ <td>delimiter</td>
+ <td>Split result with delimiter (java.util.StringTokenizier)
+ and use resultproperty as prefix to store tokens.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>separatearrayresults</td>
+ <td>When return value is an array, save result as property list
+ (<em>$resultproperty.[0..N]</em> and <em>$resultproperty.length</em>)
+ </td>
+ <td><code>true</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Get all Manager ObjectNames from all services and Hosts <br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:query
+ name="Catalina:type=Manager,*
+ resultproperty="manager" />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Now you can find the Session Manager at <em>${manager.[0..N].name}</em>
+properties and access the result object counter with ${manager.length} property.
+</p>
+<p>
+Example to get the Manager from <em>servlet-examples</em> application an bind all MBean properties<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:query
+ name="Catalina:type=Manager,context=/servlet-examples,host=localhost*"
+ attributebinding="true"
+ resultproperty="manager.servletExamples" />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Now you can find the manager at <em>${manager.servletExamples.0.name}</em> property
+and can access all properties from this manager with <em>${manager.servletExamples.0.[manager attribute names]</em>}.
+The result object counter from MBeans is stored ad ${manager.length} property.
+</p>
+
+<p>
+Example to get all MBeans from a server and store inside an external XML property file<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+<project name="jmx.query"
+ xmlns:jmx="antlib:org.apache.catalina.ant.jmx"
+ default="query-all" basedir=".">
+<property name="jmx.host" value="localhost"/>
+<property name="jmx.port" value="8050"/>
+<property name="jmx.username" value="controlRole"/>
+<property name="jmx.password" value="tomcat"/>
+
+<target name="query-all" description="Query all MBeans of a server">
+<!-- Configure connection -->
+<jmx:open
+ host="${jmx.host}"
+ port="${jmx.port}"
+ ref="jmx.server"
+ username="${jmx.username}"
+ password="${jmx.password}"/>
+<!-- Query MBean list -->
+<jmx:query
+ name="*:*"
+ resultproperty="mbeans"
+ attributebinding="false"/>
+
+<echoproperties
+ destfile="mbeans.properties"
+ prefix="mbeans."
+ format="xml"/>
+
+<!-- Print results -->
+<echo
+ message="Number of MBeans in server ${jmx.host}:${jmx.port} is ${mbeans.length}"/>
+</target>
+</project>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+Now you can find all MBeans inside the file <em>mbeans.properties</em>.
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorCreateTask: remote create MBean Ant task"><!--()--></a><a name="JMXAccessorCreateTask:__remote_create_MBean_Ant_task"><strong>JMXAccessorCreateTask: remote create MBean Ant task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=MBeanFactory</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>className</td>
+ <td>Existing MBean full qualified class name (see Tomcat MBean description above)
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>classLoader</td>
+ <td>ObjectName of server or web application classloader <br>
+ ( <em>Catalina:type=ServerClassLoader,name=[server,common,shared]</em> or<br>
+ <em>Catalina:type=WebappClassLoader,context=/myapps,host=localhost</em>)
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>JMX Connection reference
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo command usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Example to create remote MBean<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:create
+ ref="${jmx.reference}"
+ name="Catalina:type=MBeanFactory"
+ className="org.apache.commons.modeler.BaseModelMBean"
+ classLoader="Catalina:type=ServerClassLoader,name=server">
+ <Arg value="org.apache.catalina.mbeans.MBeanFactory" />
+ </jmx:create>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+<p>
+ <b>Warning</b>: Many Tomcat MBeans can't be linked to their parent once<br>
+ created. The Valve, Cluster and Realm MBeans are not automatically<br>
+ connected with their parent. Use the <em>MBeanFacrory</em> create<br>
+ operation instead.
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorUnregisterTask: remote unregister MBean Ant task"><!--()--></a><a name="JMXAccessorUnregisterTask:__remote_unregister_MBean_Ant_task"><strong>JMXAccessorUnregisterTask: remote unregister MBean Ant task</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=MBeanFactory</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>JMX Connection reference
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo command usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Example to unregister remote MBean<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <jmx:unregister
+ name="Catalina:type=MBeanFactory"
+ />
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+<p>
+ <b>Warning</b>: A lot of Tomcat MBeans can't be unregister.<br>
+ The MBeans are not unlinked from their parent. Use <em>MBeanFacrory</em><br>
+ remove operation instead.
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorCondition: express condition"><!--()--></a><a name="JMXAccessorCondition:__express_condition"><strong>JMXAccessorCondition: express condition</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>url</td>
+ <td>Set JMX connection URL - <em>service:jmx:rmi:///jndi/rmi://localhost:8050/jmxrmi</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>host</td>
+ <td>Set the host, shortcut the very long URL syntax.
+ </td>
+ <td><code>localhost</code></td>
+ </tr>
+
+ <tr>
+ <td>port</td>
+ <td>Set the remote connection port
+ </td>
+ <td><code>8050</code></td>
+ </tr>
+
+ <tr>
+ <td>username</td>
+ <td>remote JMX connection user name.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>password</td>
+ <td>remote JMX connection password.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>Name of the internal connection reference. With this attribute you can
+ configure more the one connection inside the same Ant project.
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=Server</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>echo</td>
+ <td>Echo condition usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+ <tr>
+ <td>if</td>
+ <td>Only execute if a property of the given name <b>exists</b> in the current project.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>unless</td>
+ <td>Only execute if a property of the given name <b>not exists</b> in the current project.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>value (requiered)</td>
+ <td>Second arg for operation
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>type</td>
+ <td>Value type to express operation (support <em>long</em> and <em>double</em>)
+ </td>
+ <td><code>long</code></td>
+ </tr>
+
+ <tr>
+ <td>operation</td>
+ <td> express one
+ <ul>
+ <li>== equals</li>
+ <li>!= not equals</li>
+ <li>> greater than (&gt;)</li>
+ <li>>= greater than or equals (&gt;=)</li>
+ <li>< lesser than (&lt;)</li>
+ <li><= lesser than or equals (&lt;=)</li>
+ </ul>
+ </td>
+ <td><code>==</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Wait for server connection and that cluster backup node is accessable<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <target name="wait">
+ <waitfor maxwait="${maxwait}" maxwaitunit="second" timeoutproperty="server.timeout" >
+ <and>
+ <socket server="${server.name}" port="${server.port}"/>
+ <http url="${url}"/>
+ <jmx:condition
+ operation="=="
+ host="localhost"
+ port="9014"
+ username="controlRole"
+ password="tomcat"
+ name="Catalina:type=IDataSender,host=localhost,senderAddress=192.168.111.1,senderPort=9025"
+ attribute="connected"
+ value="true"
+ />
+ </and>
+ </waitfor>
+ <fail if="server.timeout" message="Server ${url} don't answer inside ${maxwait} sec" />
+ <echo message="Server ${url} alive" />
+ </target>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="JMXAccessorEqualsCondition: equals MBean Ant condition"><!--()--></a><a name="JMXAccessorEqualsCondition:__equals_MBean_Ant_condition"><strong>JMXAccessorEqualsCondition: equals MBean Ant condition</strong></a></font></td></tr><tr><td><blockquote>
+<p>
+List of Attributes<br>
+<table border="1" cellpadding="5">
+
+ <tr>
+ <th align="center" bgcolor="aqua">Attribute</th>
+ <th align="center" bgcolor="aqua">Description</th>
+ <th align="center" bgcolor="aqua">Default value</th>
+ </tr>
+
+ <tr>
+ <td>url</td>
+ <td>Set JMX connection URL - <em>service:jmx:rmi:///jndi/rmi://localhost:8050/jmxrmi</em>
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>host</td>
+ <td>Set the host, shortcut the very long URL syntax.
+ </td>
+ <td><code>localhost</code></td>
+ </tr>
+
+ <tr>
+ <td>port</td>
+ <td>Set the remote connection port
+ </td>
+ <td><code>8050</code></td>
+ </tr>
+
+ <tr>
+ <td>username</td>
+ <td>remote JMX connection user name.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>password</td>
+ <td>remote JMX connection password.
+ </td>
+ <td></td>
+ </tr>
+
+ <tr>
+ <td>ref</td>
+ <td>Name of the internal connection reference. With this attribute you can
+ configure more the one connection inside the same Ant project.
+ </td>
+ <td><code>jmx.server</code></td>
+ </tr>
+
+ <tr>
+ <td>name</td>
+ <td>Full qualified JMX ObjectName -- <em>Catalina:type=Server</em>
+ </td>
+ <td></td>
+ </tr>
+
+
+ <tr>
+ <td>echo</td>
+ <td>Echo condition usage (access and result)
+ </td>
+ <td><code>false</code></td>
+ </tr>
+
+</table>
+</p>
+<p>
+Wait for server connection and that cluster backup node is accessible<br>
+<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
+ <target name="wait">
+ <waitfor maxwait="${maxwait}" maxwaitunit="second" timeoutproperty="server.timeout" >
+ <and>
+ <socket server="${server.name}" port="${server.port}"/>
+ <http url="${url}"/>
+ <jmx:equals
+ host="localhost"
+ port="9014"
+ username="controlRole"
+ password="tomcat"
+ name="Catalina:type=IDataSender,host=localhost,senderAddress=192.168.111.1,senderPort=9025"
+ attribute="connected"
+ value="true"
+ />
+ </and>
+ </waitfor>
+ <fail if="server.timeout" message="Server ${url} don't answer inside ${maxwait} sec" />
+ <echo message="Server ${url} alive" />
+ </target>
+</pre></td><td bgcolor="#023264" width="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="./images/void.gif" alt="" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
+</p>
+
+</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Using the JMXProxyServlet"><!--()--></a><a name="Using_the_JMXProxyServlet"><strong>Using the JMXProxyServlet</strong></a></font></td></tr><tr><td><blockquote>
+
+ <p>
+ Tomcat offers an alternative to using remote (or even local) JMX
+ connections while still giving you access to everything JMX has to offer:
+ Tomcat's
+ <a href="api/org/apache/catalina/manager/JMXProxyServlet.html">JMXProxyServlet</a>.
+ </p>
+
+ <p>
+ The JMXProxyServlet allows a client to issue JMX queries via an HTTP
+ interface. This technique offers the following advantages over using
+ JMX directly from a client program:
+ </p>
+
+ <ul>
+ <li>You don't have to launch a full JVM and make a remote JMX connection
+ just to ask for one small piece of data from a runing server</li>
+ <li>You don't have to know how to work with JMX connections</li>
+ <li>You don't need any of the complex configuration covered in the rest
+ of this page</li>
+ <li>Your client program does not have to be written in Java</li>
+ </ul>
+
+ <p>
+ A perfect example of JMX overkill can be seen in the case of popular
+ server-monitoring software such as Nagios or Ichinga: if you want to
+ monitor 10 items via JMX, you will have to launch 10 JVMs, make 10 JMX
+ connections, and then shut them all down every few minutes. With the
+ JMXProxyServlet, you can make 10 HTTP connections and be done with it.
+ </p>
+
+ <p>
+ You can find out more information about the JMXProxyServlet in the
+ documentation for the
+ <a href="manager-howto.html#Using_the_JMX_Proxy_Servlet">Tomcat
+ manager</a>.
+ </p>
+ </blockquote></td></tr></table></td></tr><tr class="noPrint"><td width="20%" valign="top" nowrap class="noPrint"></td><td width="80%" valign="top" align="left"><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="comments_section" id="comments_section"><strong>Comments</strong></a></font></td></tr><tr><td><blockquote><p class="notice"><strong>Notice: </strong>This is not a Q&A section.
+ The Apache Comments System is explained
+ <a href="/tomcat-8.0-doc/comments.html">here</a>.
+ Comments should be pointed towards suggestions on improving the documentation
+ or server, and may be removed again by our moderators if they are either
+ implemented or considered invalid/off-topic.
+ Questions on how to manage Apache Tomcat should be directed
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