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+<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat Configuration Reference (6.0.39) - The ClusterManager object</title><meta name="author" content="Filip Hanik"><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 6.0</font></h1><font face="arial,helvetica,sanserif">Version 6.0.39, Jan 27 2014</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="noshade" size="1"></td></tr><tr><!--LEFT SIDE NAVIGATION--><td width="20%" valign="top" nowrap="nowrap" class="noPrint"><p><strong>Links</strong></p><ul><li><a href="../index.html">Docs Home</a></li><li><a href="index.html">Config Ref. Home</a></li></ul><p><strong>Top Level Elements</strong></p><ul><li><a href="server.html">Server</a></li><li><a href="service.html">Service</a></li></ul><p><strong>Executors</strong></p><ul><li><a href="executor.html">Executor</a></li></ul><p><strong>Connectors</strong></p><ul><li><a href="http.html">HTTP</a></li><li><a href="ajp.html">AJP</a></li></ul><p><strong>Containers</strong></p><ul><li><a href="context.html">Context</a></li><li><a href="engine.html">Engine</a></li><li><a href="host.html">Host</a></li><li><a href="cluster.html">Cluster</a></li></ul><p><strong>Nested Components</strong></p><ul><li><a href="globalresources.html">Global Resources</a></li><li><a href="listeners.html">Listeners</a></li><li><a href="loader.html">Loader</a></li><li><a href="manager.html">Manager</a></li><li><a href="realm.html">Realm</a></li><li><a href="resources.html">Resources</a></li><li><a href="valve.html">Valve</a></li></ul><p><strong>Cluster Elements</strong></p><ul><li><a href="cluster.html">Cluster</a></li><li><a href="cluster-manager.html">Manager</a></li><li><a href="cluster-channel.html">Channel</a></li><li><a href="cluster-membership.html">Channel/Membership</a></li><li><a href="cluster-sender.html">Channel/Sender</a></li><li><a href="cluster-receiver.html">Channel/Receiver</a></li><li><a href="cluster-interceptor.html">Channel/Interceptor</a></li><li><a href="cluster-valve.html">Valve</a></li><li><a href="cluster-deployer.html">Deployer</a></li><li><a href="cluster-listener.html">ClusterListener</a></li></ul><p><strong>Other</strong></p><ul><li><a href="filter.html">Filter</a></li><li><a href="systemprops.html">System properties</a></li></ul></td><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left" id="mainBody"><h1>Apache Tomcat Configuration Reference</h1><h2>The ClusterManager object</h2><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="#The_<Manager>">The <Manager></a></li><li><a href="#Attributes">Attributes</a><ol><li><a href="#Common_Attributes">Common Attributes</a></li><li><a href="#org.apache.catalina.ha.session.DeltaManager_Attributes">org.apache.catalina.ha.session.DeltaManager Attributes</a></li><li><a href="#org.apache.catalina.ha.session.BackupManager_Attributes">org.apache.catalina.ha.session.BackupManager Attributes</a></li></ol></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>A cluster manager is an extension to Tomcat's session manager interface,
+ <code>org.apache.catalina.Manager</code>.
+ A cluster manager must implement the
+ <code>org.apache.catalina.ha.ClusterManager</code> and is solely responsible
+ for how the session is replicated.<br>
+ There are currently two different managers, the
+ <code>org.apache.catalina.ha.session.DeltaManager</code> replicates deltas of
+ session data to all members in the cluster. This implementation is proven and
+ works very well, but has a limitation as it requires the cluster members to be
+ homogeneous, all nodes must deploy the same applications and be exact
+ replicas. The <code>org.apache.catalina.ha.session.BackupManager</code> also
+ replicates deltas but only to one backup node. The location of the backup node
+ is known to all nodes in the cluster. It also supports heterogeneous
+ deployments, so the manager knows at what locations the web application is
+ deployed.</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="The <Manager>"><!--()--></a><a name="The_<Manager>"><strong>The <Manager></strong></a></font></td></tr><tr><td><blockquote>
+ <p>The <code><Manager></code> element defined inside the
+ <code><Cluster></code> element is the template defined for all web
+ applications that are marked <code><distributable/></code> in their
+ <code>web.xml</code> file. However, you can still override the manager
+ implementation on a per web application basis, by putting the
+ <code><Manager></code> inside the <code><Context></code> element
+ either in the <code><a href="context.html">context.xml</a></code> file or the
+ <code><a href="index.html">server.xml</a></code> file.</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="Attributes"><strong>Attributes</strong></a></font></td></tr><tr><td><blockquote>
+ <table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Common Attributes"><!--()--></a><a name="Common_Attributes"><strong>Common Attributes</strong></a></font></td></tr><tr><td><blockquote>
+ <table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><strong><code>className</code></strong></td><td align="left" valign="center">
+ </td></tr><tr><td align="left" valign="center"><code>name</code></td><td align="left" valign="center">
+ <b>The name of this cluster manager, the name is used to identify a
+ session manager on a node. The name might get modified by the
+ <code>Cluster</code> element to make it unique in the container.</b>
+ </td></tr><tr><td align="left" valign="center"><code>defaultMode</code></td><td align="left" valign="center">
+ <b>Deprecated since 6.0.0</b>
+ </td></tr><tr><td align="left" valign="center"><code>notifyListenersOnReplication</code></td><td align="left" valign="center">
+ Set to <code>true</code> if you wish to have session listeners notified
+ when session attributes are being replicated or removed across Tomcat
+ nodes in the cluster.
+ </td></tr><tr><td align="left" valign="center"><code>expireSessionsOnShutdown</code></td><td align="left" valign="center">
+ When a web application is being shutdown, Tomcat issues an expire call
+ to each session to notify all the listeners. If you wish for all
+ sessions to expire on all nodes when a shutdown occurs on one node, set
+ this value to <code>true</code>. Default value is <code>false</code>.
+ </td></tr></table>
+ </blockquote></td></tr></table>
+ <table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="org.apache.catalina.ha.session.DeltaManager Attributes"><!--()--></a><a name="org.apache.catalina.ha.session.DeltaManager_Attributes"><strong>org.apache.catalina.ha.session.DeltaManager Attributes</strong></a></font></td></tr><tr><td><blockquote>
+ <table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><code>domainReplication</code></td><td align="left" valign="center">
+ <b>Deprecated since 6.0.0</b><br>
+ If you wish sessions to be replicated only to members that have the
+ same logical domain set, use
+ <code><a href="cluster-interceptor.html">DomainFilterInterceptor </a></code>.
+ </td></tr><tr><td align="left" valign="center"><code>expireSessionsOnShutdown</code></td><td align="left" valign="center">
+ When a web application is being shutdown, Tomcat issues an expire call
+ to each session to notify all the listeners. If you wish for all
+ sessions to expire on all nodes when a shutdown occurs on one node, set
+ this value to <code>true</code>.
+ Default value is <code>false</code>.
+ </td></tr><tr><td align="left" valign="center"><code>maxActiveSessions</code></td><td align="left" valign="center">
+ The maximum number of active sessions that will be created by this
+ Manager, or -1 (the default) for no limit. For this manager, all
+ sessions are counted as active sessions irrespective if whether or not
+ the current node is the primary node for the session.
+ </td></tr><tr><td align="left" valign="center"><code>notifySessionListenersOnReplication</code></td><td align="left" valign="center">
+ Set to <code>true</code> if you wish to have session listeners notified
+ when sessions are created and expired across Tomcat nodes in the
+ cluster.
+ </td></tr><tr><td align="left" valign="center"><code>notifyContainerListenersOnReplication</code></td><td align="left" valign="center">
+ Set to <code>true</code> if you wish to have container listeners notified
+ across Tomcat nodes in the cluster.
+ </td></tr><tr><td align="left" valign="center"><code>stateTransferTimeout</code></td><td align="left" valign="center">
+ The time in seconds to wait for a session state transfer to complete
+ from another node when a node is starting up.
+ Default value is <code>60</code> seconds.
+ </td></tr><tr><td align="left" valign="center"><code>sessionAttributeFilter</code></td><td align="left" valign="center">
+ A regular expression used to filter, which session attributes will
+ be replicated. An attribute will only be replicated, if its name
+ matches this pattern. If the pattern is not set (default), all
+ attributes are eligible for replication. As an example, the value
+ <code>^(userName|sessionHistory)$</code> will only replicate the two
+ session attributes named <code>userName</code> and
+ <code>sessionHistory</code>.
+ </td></tr></table>
+ </blockquote></td></tr></table>
+ <table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="org.apache.catalina.ha.session.BackupManager Attributes"><!--()--></a><a name="org.apache.catalina.ha.session.BackupManager_Attributes"><strong>org.apache.catalina.ha.session.BackupManager Attributes</strong></a></font></td></tr><tr><td><blockquote>
+ <table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><code>mapSendOptions</code></td><td align="left" valign="center">
+ The backup manager uses a replicated map, this map is sending and
+ receiving messages. You can setup the flag for how this map is sending
+ messages, the default value is <code>6</code>(synchronous).<br>
+ Note that if you use asynchronous messaging it is possible for update
+ messages for a session to be processed by the receiving node in a
+ different order to the order in which they were sent.
+ </td></tr><tr><td align="left" valign="center"><code>maxActiveSessions</code></td><td align="left" valign="center">
+ The maximum number of active sessions that will be created by this
+ Manager, or -1 (the default) for no limit. For this manager, only
+ sessions where the current node is the primary node for the session are
+ considered active sessions.
+ </td></tr><tr><td align="left" valign="center"><code>rpcTimeout</code></td><td align="left" valign="center">
+ Timeout for RPC message used for broadcast and transfer state from
+ another map.
+ Default value is <code>15000</code> milliseconds.
+ </td></tr></table>
+ </blockquote></td></tr></table>
+</blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
+ Copyright © 1999-2014, Apache Software Foundation
+ </em></font></div></td></tr></table></body></html>
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