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Posted to commits@activemq.apache.org by bu...@apache.org on 2014/09/29 11:20:54 UTC
svn commit: r924009 - in /websites/production/activemq/content:
cache/main.pageCache features.html shared-file-system-master-slave.html
test.html
Author: buildbot
Date: Mon Sep 29 09:20:53 2014
New Revision: 924009
Log:
Production update by buildbot for activemq
Removed:
websites/production/activemq/content/test.html
Modified:
websites/production/activemq/content/cache/main.pageCache
websites/production/activemq/content/features.html
websites/production/activemq/content/shared-file-system-master-slave.html
Modified: websites/production/activemq/content/cache/main.pageCache
==============================================================================
Binary files - no diff available.
Modified: websites/production/activemq/content/features.html
==============================================================================
--- websites/production/activemq/content/features.html (original)
+++ websites/production/activemq/content/features.html Mon Sep 29 09:20:53 2014
@@ -76,7 +76,7 @@
<p>Apache ActiveMQ is packed with features; to get an idea you might want to look at the <a shape="rect" href="features-overview.html">Features Overview</a> otherwise here is the list of all of the main features...</p>
-<ul class="childpages-macro"><li><a shape="rect" href="active-groups.html">Active Groups</a></li><li><a shape="rect" href="activemq-real-time.html">ActiveMQ Real Time</a><ul class="childpages-macro"><li><a shape="rect" href="broadcasting.html">Broadcasting</a></li><li><a shape="rect" href="group-membership.html">Group Membership</a></li><li><a shape="rect" href="life-cycle.html">Life Cycle</a></li><li><a shape="rect" href="the-activeblaze-message-type.html">The ActiveBlaze Message type</a></li></ul></li><li><a shape="rect" href="broker-camel-component.html">Broker Camel Component</a></li><li><a shape="rect" href="clustering.html">Clustering</a><ul class="childpages-macro"><li><a shape="rect" href="masterslave.html">MasterSlave</a><ul class="childpages-macro"><li><a shape="rect" href="jdbc-master-slave.html">JDBC Master Slave</a></li><li><a shape="rect" href="kahadb-replication-experimental.html">KahaDB Replication (Experimental)</a></li><li><a shape="rect" href="pure-master-slave.ht
ml">Pure Master Slave</a></li><li><a shape="rect" href="shared-file-system-master-slave.html">Shared File System Master Slave</a></li></ul></li><li><a shape="rect" href="networks-of-brokers.html">Networks of Brokers</a></li><li><a shape="rect" href="replicated-message-store.html">Replicated Message Store</a></li></ul></li><li><a shape="rect" href="command-agent.html">Command Agent</a></li><li><a shape="rect" href="consumer-features.html">Consumer Features</a><ul class="childpages-macro"><li><a shape="rect" href="consumer-dispatch-async.html">Consumer Dispatch Async</a></li><li><a shape="rect" href="consumer-priority.html">Consumer Priority</a></li><li><a shape="rect" href="exclusive-consumer.html">Exclusive Consumer</a></li><li><a shape="rect" href="manage-durable-subscribers.html">Manage Durable Subscribers</a></li><li><a shape="rect" href="message-groups.html">Message Groups</a></li><li><a shape="rect" href="redelivery-policy.html">Redelivery Policy</a></li><li><a shape="rect" hre
f="retroactive-consumer.html">Retroactive Consumer</a></li><li><a shape="rect" href="selectors.html">Selectors</a></li><li><a shape="rect" href="slow-consumer-handling.html">Slow Consumer Handling</a></li><li><a shape="rect" href="subscription-recovery-policy.html">Subscription Recovery Policy</a></li></ul></li><li><a shape="rect" href="destination-features.html">Destination Features</a><ul class="childpages-macro"><li><a shape="rect" href="composite-destinations.html">Composite Destinations</a></li><li><a shape="rect" href="configure-startup-destinations.html">Configure Startup Destinations</a></li><li><a shape="rect" href="delete-inactive-destinations.html">Delete Inactive Destinations</a></li><li><a shape="rect" href="destination-options.html">Destination Options</a></li><li><a shape="rect" href="mirrored-queues.html">Mirrored Queues</a></li><li><a shape="rect" href="per-destination-policies.html">Per Destination Policies</a></li><li><a shape="rect" href="virtual-destinations.htm
l">Virtual Destinations</a></li><li><a shape="rect" href="wildcards.html">Wildcards</a></li></ul></li><li><a shape="rect" href="discovery.html">Discovery</a></li><li><a shape="rect" href="enterprise-integration-patterns.html">Enterprise Integration Patterns</a></li><li><a shape="rect" href="features-overview.html">Features Overview</a></li><li><a shape="rect" href="horizontal-scaling.html">Horizontal Scaling</a><ul class="childpages-macro"><li><a shape="rect" href="scaling-queues.html">Scaling Queues</a></li></ul></li><li><a shape="rect" href="interceptors.html">Interceptors</a><ul class="childpages-macro"><li><a shape="rect" href="destinations-plugin.html">Destinations Plugin</a></li><li><a shape="rect" href="logging-interceptor.html">Logging Interceptor</a></li><li><a shape="rect" href="statisticsplugin.html">StatisticsPlugin</a></li><li><a shape="rect" href="timestampplugin.html">TimeStampPlugin</a></li></ul></li><li><a shape="rect" href="jmsxuserid.html">JMSXUserID</a></li><li><
a shape="rect" href="jmx.html">JMX</a><ul class="childpages-macro"><li><a shape="rect" href="jmx-support.html">JMX Support</a></li></ul></li><li><a shape="rect" href="logging-a-warning-if-you-forget-to-start-a-connection.html">Logging a warning if you forget to start a Connection</a></li><li><a shape="rect" href="mdc-logging.html">MDC Logging</a></li><li><a shape="rect" href="message-dispatching-features.html">Message Dispatching Features</a><ul class="childpages-macro"><li><a shape="rect" href="async-sends.html">Async Sends</a></li><li><a shape="rect" href="dispatch-policies.html">Dispatch Policies</a></li><li><a shape="rect" href="message-cursors.html">Message Cursors</a></li><li><a shape="rect" href="optimized-acknowledgement.html">Optimized Acknowledgement</a></li><li><a shape="rect" href="producer-flow-control.html">Producer Flow Control</a></li><li><a shape="rect" href="total-ordering.html">Total Ordering</a></li></ul></li><li><a shape="rect" href="message-features.html">Messa
ge Features</a><ul class="childpages-macro"><li><a shape="rect" href="activemq-message-properties.html">ActiveMQ Message Properties</a></li><li><a shape="rect" href="advisory-message.html">Advisory Message</a></li><li><a shape="rect" href="blob-messages.html">Blob Messages</a></li><li><a shape="rect" href="delay-and-schedule-message-delivery.html">Delay and Schedule Message Delivery</a></li><li><a shape="rect" href="jms-streams.html">JMS Streams</a></li><li><a shape="rect" href="message-transformation.html">Message Transformation</a></li><li><a shape="rect" href="structured-message-properties-and-mapmessages.html">Structured Message Properties and MapMessages</a></li></ul></li><li><a shape="rect" href="new-features.html">New Features</a><ul class="childpages-macro"><li><a shape="rect" href="changes-in-40.html">Changes in 4.0</a></li><li><a shape="rect" href="new-features-in-41.html">New Features in 4.1</a></li><li><a shape="rect" href="new-features-in-50.html">New Features in 5.0</a
></li><li><a shape="rect" href="new-features-in-51.html">New Features in 5.1</a></li><li><a shape="rect" href="new-features-in-52.html">New Features in 5.2</a></li><li><a shape="rect" href="new-features-in-53.html">New Features in 5.3</a></li><li><a shape="rect" href="new-features-in-54.html">New Features in 5.4</a></li><li><a shape="rect" href="new-features-in-55.html">New Features in 5.5</a></li><li><a shape="rect" href="new-features-in-56.html">New Features in 5.6</a></li><li><a shape="rect" href="new-features-in-57.html">New Features in 5.7</a></li><li><a shape="rect" href="new-features-in-58.html">New Features in 5.8</a></li><li><a shape="rect" href="new-features-in-59.html">New Features in 5.9</a><ul class="childpages-macro"><li><a shape="rect" href="runtime-configuration.html">Runtime Configuration</a></li></ul></li><li><a shape="rect" href="new-features-in-511.html">New Features in 5.11</a></li><li><a shape="rect" href="new-features-in-60.html">New Features in 6.0</a></li></
ul></li><li><a shape="rect" href="performance.html">Performance</a><ul class="childpages-macro"><li><a shape="rect" href="activemq-performance-module-users-manual.html">ActiveMQ Performance Module Users Manual</a><ul class="childpages-macro"><li><a shape="rect" href="sample-report.html">sample report</a></li></ul></li><li><a shape="rect" href="load-testing-with-camel.html">Load Testing with Camel</a></li><li><a shape="rect" href="performance-report.html">Performance report</a></li></ul></li><li><a shape="rect" href="persistence.html">Persistence</a><ul class="childpages-macro"><li><a shape="rect" href="amq-message-store.html">AMQ Message Store</a></li><li><a shape="rect" href="configurable-ioexception-handling.html">Configurable IOException Handling</a></li><li><a shape="rect" href="jdbc-support.html">JDBC Support</a><ul class="childpages-macro"><li><a shape="rect" href="sqlserver.html">SQLServer</a></li><li><a shape="rect" href="sybase.html">Sybase</a></li></ul></li><li><a shape="r
ect" href="kahadb.html">KahaDB</a></li><li><a shape="rect" href="kaha-persistence.html">Kaha Persistence</a><ul class="childpages-macro"><li><a shape="rect" href="test.html">TEST</a></li></ul></li><li><a shape="rect" href="leveldb-store.html">LevelDB Store</a></li><li><a shape="rect" href="pluggable-storage-lockers.html">Pluggable storage lockers</a></li><li><a shape="rect" href="replicated-leveldb-store.html">Replicated LevelDB Store</a></li></ul></li><li><a shape="rect" href="scaling-the-depth-of-a-queue.html">Scaling the Depth of a Queue</a></li><li><a shape="rect" href="security.html">Security</a><ul class="childpages-macro"><li><a shape="rect" href="audit-logging.html">Audit Logging</a></li><li><a shape="rect" href="cached-ldap-authorization-module.html">Cached LDAP Authorization Module</a></li><li><a shape="rect" href="encrypted-passwords.html">Encrypted passwords</a></li><li><a shape="rect" href="shiro.html">Shiro</a></li></ul></li><li><a shape="rect" href="the-proxy-connecto
r.html">The Proxy Connector</a></li><li><a shape="rect" href="unix.html">Unix</a><ul class="childpages-macro"><li><a shape="rect" href="unix-service.html">Unix Service</a></li><li><a shape="rect" href="unix-shell-script.html">Unix Shell Script</a></li></ul></li><li><a shape="rect" href="uri-protocols.html">URI Protocols</a><ul class="childpages-macro"><li><a shape="rect" href="vm-protocol.html">VM Protocol</a></li></ul></li><li><a shape="rect" href="visualisation.html">Visualisation</a><ul class="childpages-macro"><li><a shape="rect" href="visualisation-wish-list.html">Visualisation Wish List</a></li></ul></li></ul> </div>
+<ul class="childpages-macro"><li><a shape="rect" href="active-groups.html">Active Groups</a></li><li><a shape="rect" href="activemq-real-time.html">ActiveMQ Real Time</a><ul class="childpages-macro"><li><a shape="rect" href="broadcasting.html">Broadcasting</a></li><li><a shape="rect" href="group-membership.html">Group Membership</a></li><li><a shape="rect" href="life-cycle.html">Life Cycle</a></li><li><a shape="rect" href="the-activeblaze-message-type.html">The ActiveBlaze Message type</a></li></ul></li><li><a shape="rect" href="broker-camel-component.html">Broker Camel Component</a></li><li><a shape="rect" href="clustering.html">Clustering</a><ul class="childpages-macro"><li><a shape="rect" href="masterslave.html">MasterSlave</a><ul class="childpages-macro"><li><a shape="rect" href="jdbc-master-slave.html">JDBC Master Slave</a></li><li><a shape="rect" href="kahadb-replication-experimental.html">KahaDB Replication (Experimental)</a></li><li><a shape="rect" href="pure-master-slave.ht
ml">Pure Master Slave</a></li><li><a shape="rect" href="shared-file-system-master-slave.html">Shared File System Master Slave</a></li></ul></li><li><a shape="rect" href="networks-of-brokers.html">Networks of Brokers</a></li><li><a shape="rect" href="replicated-message-store.html">Replicated Message Store</a></li></ul></li><li><a shape="rect" href="command-agent.html">Command Agent</a></li><li><a shape="rect" href="consumer-features.html">Consumer Features</a><ul class="childpages-macro"><li><a shape="rect" href="consumer-dispatch-async.html">Consumer Dispatch Async</a></li><li><a shape="rect" href="consumer-priority.html">Consumer Priority</a></li><li><a shape="rect" href="exclusive-consumer.html">Exclusive Consumer</a></li><li><a shape="rect" href="manage-durable-subscribers.html">Manage Durable Subscribers</a></li><li><a shape="rect" href="message-groups.html">Message Groups</a></li><li><a shape="rect" href="redelivery-policy.html">Redelivery Policy</a></li><li><a shape="rect" hre
f="retroactive-consumer.html">Retroactive Consumer</a></li><li><a shape="rect" href="selectors.html">Selectors</a></li><li><a shape="rect" href="slow-consumer-handling.html">Slow Consumer Handling</a></li><li><a shape="rect" href="subscription-recovery-policy.html">Subscription Recovery Policy</a></li></ul></li><li><a shape="rect" href="destination-features.html">Destination Features</a><ul class="childpages-macro"><li><a shape="rect" href="composite-destinations.html">Composite Destinations</a></li><li><a shape="rect" href="configure-startup-destinations.html">Configure Startup Destinations</a></li><li><a shape="rect" href="delete-inactive-destinations.html">Delete Inactive Destinations</a></li><li><a shape="rect" href="destination-options.html">Destination Options</a></li><li><a shape="rect" href="mirrored-queues.html">Mirrored Queues</a></li><li><a shape="rect" href="per-destination-policies.html">Per Destination Policies</a></li><li><a shape="rect" href="virtual-destinations.htm
l">Virtual Destinations</a></li><li><a shape="rect" href="wildcards.html">Wildcards</a></li></ul></li><li><a shape="rect" href="discovery.html">Discovery</a></li><li><a shape="rect" href="enterprise-integration-patterns.html">Enterprise Integration Patterns</a></li><li><a shape="rect" href="features-overview.html">Features Overview</a></li><li><a shape="rect" href="horizontal-scaling.html">Horizontal Scaling</a><ul class="childpages-macro"><li><a shape="rect" href="scaling-queues.html">Scaling Queues</a></li></ul></li><li><a shape="rect" href="interceptors.html">Interceptors</a><ul class="childpages-macro"><li><a shape="rect" href="destinations-plugin.html">Destinations Plugin</a></li><li><a shape="rect" href="logging-interceptor.html">Logging Interceptor</a></li><li><a shape="rect" href="statisticsplugin.html">StatisticsPlugin</a></li><li><a shape="rect" href="timestampplugin.html">TimeStampPlugin</a></li></ul></li><li><a shape="rect" href="jmsxuserid.html">JMSXUserID</a></li><li><
a shape="rect" href="jmx.html">JMX</a><ul class="childpages-macro"><li><a shape="rect" href="jmx-support.html">JMX Support</a></li></ul></li><li><a shape="rect" href="logging-a-warning-if-you-forget-to-start-a-connection.html">Logging a warning if you forget to start a Connection</a></li><li><a shape="rect" href="mdc-logging.html">MDC Logging</a></li><li><a shape="rect" href="message-dispatching-features.html">Message Dispatching Features</a><ul class="childpages-macro"><li><a shape="rect" href="async-sends.html">Async Sends</a></li><li><a shape="rect" href="dispatch-policies.html">Dispatch Policies</a></li><li><a shape="rect" href="message-cursors.html">Message Cursors</a></li><li><a shape="rect" href="optimized-acknowledgement.html">Optimized Acknowledgement</a></li><li><a shape="rect" href="producer-flow-control.html">Producer Flow Control</a></li><li><a shape="rect" href="total-ordering.html">Total Ordering</a></li></ul></li><li><a shape="rect" href="message-features.html">Messa
ge Features</a><ul class="childpages-macro"><li><a shape="rect" href="activemq-message-properties.html">ActiveMQ Message Properties</a></li><li><a shape="rect" href="advisory-message.html">Advisory Message</a></li><li><a shape="rect" href="blob-messages.html">Blob Messages</a></li><li><a shape="rect" href="delay-and-schedule-message-delivery.html">Delay and Schedule Message Delivery</a></li><li><a shape="rect" href="jms-streams.html">JMS Streams</a></li><li><a shape="rect" href="message-transformation.html">Message Transformation</a></li><li><a shape="rect" href="structured-message-properties-and-mapmessages.html">Structured Message Properties and MapMessages</a></li></ul></li><li><a shape="rect" href="new-features.html">New Features</a><ul class="childpages-macro"><li><a shape="rect" href="changes-in-40.html">Changes in 4.0</a></li><li><a shape="rect" href="new-features-in-41.html">New Features in 4.1</a></li><li><a shape="rect" href="new-features-in-50.html">New Features in 5.0</a
></li><li><a shape="rect" href="new-features-in-51.html">New Features in 5.1</a></li><li><a shape="rect" href="new-features-in-52.html">New Features in 5.2</a></li><li><a shape="rect" href="new-features-in-53.html">New Features in 5.3</a></li><li><a shape="rect" href="new-features-in-54.html">New Features in 5.4</a></li><li><a shape="rect" href="new-features-in-55.html">New Features in 5.5</a></li><li><a shape="rect" href="new-features-in-56.html">New Features in 5.6</a></li><li><a shape="rect" href="new-features-in-57.html">New Features in 5.7</a></li><li><a shape="rect" href="new-features-in-58.html">New Features in 5.8</a></li><li><a shape="rect" href="new-features-in-59.html">New Features in 5.9</a><ul class="childpages-macro"><li><a shape="rect" href="runtime-configuration.html">Runtime Configuration</a></li></ul></li><li><a shape="rect" href="new-features-in-511.html">New Features in 5.11</a></li><li><a shape="rect" href="new-features-in-60.html">New Features in 6.0</a></li></
ul></li><li><a shape="rect" href="performance.html">Performance</a><ul class="childpages-macro"><li><a shape="rect" href="activemq-performance-module-users-manual.html">ActiveMQ Performance Module Users Manual</a><ul class="childpages-macro"><li><a shape="rect" href="sample-report.html">sample report</a></li></ul></li><li><a shape="rect" href="load-testing-with-camel.html">Load Testing with Camel</a></li><li><a shape="rect" href="performance-report.html">Performance report</a></li></ul></li><li><a shape="rect" href="persistence.html">Persistence</a><ul class="childpages-macro"><li><a shape="rect" href="amq-message-store.html">AMQ Message Store</a></li><li><a shape="rect" href="configurable-ioexception-handling.html">Configurable IOException Handling</a></li><li><a shape="rect" href="jdbc-support.html">JDBC Support</a><ul class="childpages-macro"><li><a shape="rect" href="sqlserver.html">SQLServer</a></li><li><a shape="rect" href="sybase.html">Sybase</a></li></ul></li><li><a shape="r
ect" href="kahadb.html">KahaDB</a></li><li><a shape="rect" href="kaha-persistence.html">Kaha Persistence</a></li><li><a shape="rect" href="leveldb-store.html">LevelDB Store</a></li><li><a shape="rect" href="pluggable-storage-lockers.html">Pluggable storage lockers</a></li><li><a shape="rect" href="replicated-leveldb-store.html">Replicated LevelDB Store</a></li></ul></li><li><a shape="rect" href="scaling-the-depth-of-a-queue.html">Scaling the Depth of a Queue</a></li><li><a shape="rect" href="security.html">Security</a><ul class="childpages-macro"><li><a shape="rect" href="audit-logging.html">Audit Logging</a></li><li><a shape="rect" href="cached-ldap-authorization-module.html">Cached LDAP Authorization Module</a></li><li><a shape="rect" href="encrypted-passwords.html">Encrypted passwords</a></li><li><a shape="rect" href="shiro.html">Shiro</a></li></ul></li><li><a shape="rect" href="the-proxy-connector.html">The Proxy Connector</a></li><li><a shape="rect" href="unix.html">Unix</a><ul
class="childpages-macro"><li><a shape="rect" href="unix-service.html">Unix Service</a></li><li><a shape="rect" href="unix-shell-script.html">Unix Shell Script</a></li></ul></li><li><a shape="rect" href="uri-protocols.html">URI Protocols</a><ul class="childpages-macro"><li><a shape="rect" href="vm-protocol.html">VM Protocol</a></li></ul></li><li><a shape="rect" href="visualisation.html">Visualisation</a><ul class="childpages-macro"><li><a shape="rect" href="visualisation-wish-list.html">Visualisation Wish List</a></li></ul></li></ul> </div>
</td>
<td valign="top">
<div class="navigation">
Modified: websites/production/activemq/content/shared-file-system-master-slave.html
==============================================================================
--- websites/production/activemq/content/shared-file-system-master-slave.html (original)
+++ websites/production/activemq/content/shared-file-system-master-slave.html Mon Sep 29 09:20:53 2014
@@ -36,6 +36,7 @@
<link href='http://activemq.apache.org/styles/highlighter/styles/shThemeEclipse.css' rel='stylesheet' type='text/css' />
<script src='http://activemq.apache.org/styles/highlighter/scripts/shCore.js' type='text/javascript'></script>
<script src='http://activemq.apache.org/styles/highlighter/scripts/shBrushJava.js' type='text/javascript'></script>
+ <script src='http://activemq.apache.org/styles/highlighter/scripts/shBrushXml.js' type='text/javascript'></script>
<script type="text/javascript">
SyntaxHighlighter.defaults['toolbar'] = false;
@@ -81,107 +82,52 @@
<tbody>
<tr>
<td valign="top" width="100%">
-<div class="wiki-content maincontent"><h2 id="SharedFileSystemMasterSlave-SharedFileSystemMasterSlave">Shared File System Master Slave</h2>
-
-<p>If you have a SAN or shared file system it can be used to provide <em>high availability</em> such that if a broker is killed, another broker can take over immediately.</p>
-
- <div class="aui-message problem shadowed information-macro">
+<div class="wiki-content maincontent"><h2 id="SharedFileSystemMasterSlave-SharedFileSystemMasterSlave">Shared File System Master Slave</h2><p>If you have a SAN or shared file system it can be used to provide <em>high availability</em> such that if a broker is killed, another broker can take over immediately.</p> <div class="aui-message problem shadowed information-macro">
<p class="title">Ensure your shared file locks work</p>
<span class="aui-icon icon-problem">Icon</span>
<div class="message-content">
-
-<p>Note that the requirements of this failover system are a distributed file system like a SAN for which exclusive file locks work reliably. If you do not have such a thing available then consider using <a shape="rect" href="masterslave.html">MasterSlave</a> instead which implements something similar but working on commodity hardware using local file systems which ActiveMQ does the replication. </p>
-
- <div class="aui-message warning shadowed information-macro">
+ <p>Note that the requirements of this failover system are a distributed file system like a SAN for which exclusive file locks work reliably. If you do not have such a thing available then consider using <a shape="rect" href="masterslave.html">MasterSlave</a> instead which implements something similar but working on commodity hardware using local file systems which ActiveMQ does the replication.</p> <div class="aui-message warning shadowed information-macro">
<p class="title">OCFS2 Warning</p>
<span class="aui-icon icon-warning">Icon</span>
<div class="message-content">
-
-<p>Was testing using OCFS2 and both brokers thought they had the master lock - this is because "OCFS2 only supports locking with 'fcntl' and not 'lockf and flock', therefore mutex file locking from Java isn't supported."</p>
-
-<p>From <a shape="rect" class="external-link" href="http://sources.redhat.com/cluster/faq.html#gfs_vs_ocfs2" rel="nofollow">http://sources.redhat.com/cluster/faq.html#gfs_vs_ocfs2</a> :<br clear="none">
-OCFS2: No cluster-aware flock or POSIX locks<br clear="none">
-GFS: fully supports Cluster-wide flocks and POSIX locks and is supported.<br clear="none">
-See this JIRA for more discussion: <a shape="rect" class="external-link" href="https://issues.apache.org/jira/browse/AMQ-4378">https://issues.apache.org/jira/browse/AMQ-4378</a></p>
+ <p>Was testing using OCFS2 and both brokers thought they had the master lock - this is because "OCFS2 only supports locking with 'fcntl' and not 'lockf and flock', therefore mutex file locking from Java isn't supported."</p><p>From <a shape="rect" class="external-link" href="http://sources.redhat.com/cluster/faq.html#gfs_vs_ocfs2" rel="nofollow">http://sources.redhat.com/cluster/faq.html#gfs_vs_ocfs2</a> :<br clear="none"> OCFS2: No cluster-aware flock or POSIX locks<br clear="none"> GFS: fully supports Cluster-wide flocks and POSIX locks and is supported.<br clear="none"> See this JIRA for more discussion: <a shape="rect" class="external-link" href="https://issues.apache.org/jira/browse/AMQ-4378">https://issues.apache.org/jira/browse/AMQ-4378</a></p>
</div>
</div>
-
-
<div class="aui-message warning shadowed information-macro">
<p class="title">NFSv3 Warning</p>
<span class="aui-icon icon-warning">Icon</span>
<div class="message-content">
-
-<p>In the event of an abnormal NFSv3 client termination (i.e., the ActiveMQ master broker), the NFSv3 server will not timeout the lock that is held by that client. This effectively renders the ActiveMQ data directory inaccessible because the ActiveMQ slave broker can't acquire the lock and therefore cannot start up. The only solution to this predicament with NFSv3 is to reboot all ActiveMQ instances to reset everything. </p>
-
-<p>Use of NFSv4 is another solution because it's design includes timeouts for locks. When using NFSv4 and the client holding the lock experiences an abnormal termination, by design, the lock is released after 30 seconds, allowing another client to grab the lock. For more information about this, see <a shape="rect" class="external-link" href="http://blogs.netapp.com/eislers_nfs_blog/2008/07/part-i-since-nf.html" rel="nofollow">this blog entry</a>. </p>
+ <p>In the event of an abnormal NFSv3 client termination (i.e., the ActiveMQ master broker), the NFSv3 server will not timeout the lock that is held by that client. This effectively renders the ActiveMQ data directory inaccessible because the ActiveMQ slave broker can't acquire the lock and therefore cannot start up. The only solution to this predicament with NFSv3 is to reboot all ActiveMQ instances to reset everything.</p><p>Use of NFSv4 is another solution because it's design includes timeouts for locks. When using NFSv4 and the client holding the lock experiences an abnormal termination, by design, the lock is released after 30 seconds, allowing another client to grab the lock. For more information about this, see <a shape="rect" class="external-link" href="http://blogs.netapp.com/eislers_nfs_blog/2008/07/part-i-since-nf.html" rel="nofollow">this blog entry</a>.</p>
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-<p>Basically you can run as many brokers as you wish from the same shared file system directory. The first broker to grab the exclusive lock on the file is the master broker. If that broker dies and releases the lock then another broker takes over. The slave brokers sit in a loop trying to grab the lock from the master broker.</p>
-
-<p>The following example shows how to configure a broker for Shared File System Master Slave where <strong>/sharedFileSystem</strong> is some directory on a shared file system. It is just a case of configuring a file based store to use a shared directory.</p>
-
-<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
-<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[
- <persistenceAdapter>
+<p>Basically you can run as many brokers as you wish from the same shared file system directory. The first broker to grab the exclusive lock on the file is the master broker. If that broker dies and releases the lock then another broker takes over. The slave brokers sit in a loop trying to grab the lock from the master broker.</p><p>The following example shows how to configure a broker for Shared File System Master Slave where <strong>/sharedFileSystem</strong> is some directory on a shared file system. It is just a case of configuring a file based store to use a shared directory.</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[ <persistenceAdapter>
<kahaDB directory="/sharedFileSystem/sharedBrokerData"/>
</persistenceAdapter>
]]></script>
-</div></div>
-<p>or:</p>
-<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
-<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[
- <persistenceAdapter>
+</div></div><p>or:</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[ <persistenceAdapter>
<levelDB directory="/sharedFileSystem/sharedBrokerData"/>
</persistenceAdapter>
]]></script>
-</div></div>
-<p>or:</p>
-<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
-<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[
- <persistenceAdapter>
+</div></div><p>or:</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[ <persistenceAdapter>
<amqPersistenceAdapter directory="/sharedFileSystem/sharedBrokerData"/>
</persistenceAdapter>
]]></script>
-</div></div>
-
-<h3 id="SharedFileSystemMasterSlave-Startup">Startup</h3>
-
-<p>On startup one master grabs an exclusive lock on the broker file directory - all other brokers are slaves and pause waiting for the exclusive lock.</p>
-
-<p><img class="confluence-embedded-image" src="https://cwiki.apache.org/confluence/download/attachments/35958/Startup.png?version=1&modificationDate=1153806958000&api=v2" data-image-src="/confluence/download/attachments/35958/Startup.png?version=1&modificationDate=1153806958000&api=v2"></p>
-
-<p>Clients should be using the <a shape="rect" href="failover-transport-reference.html">Failover Transport</a> to connect to the available brokers. e.g. using a URL something like the following</p>
-
-<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
-<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[
-failover:(tcp://broker1:61616,tcp://broker2:61616,tcp://broker3:61616)
+</div></div><h3 id="SharedFileSystemMasterSlave-Startup">Startup</h3><p>On startup one master grabs an exclusive lock on the broker file directory - all other brokers are slaves and pause waiting for the exclusive lock.</p><p><img class="confluence-embedded-image" src="https://cwiki.apache.org/confluence/download/attachments/35958/Startup.png?version=1&modificationDate=1153806958000&api=v2" data-image-src="/confluence/download/attachments/35958/Startup.png?version=1&modificationDate=1153806958000&api=v2"></p><p>Clients should be using the <a shape="rect" href="failover-transport-reference.html">Failover Transport</a> to connect to the available brokers. e.g. using a URL something like the following</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<script class="theme: Default; brush: java; gutter: false" type="syntaxhighlighter"><![CDATA[failover:(tcp://broker1:61616,tcp://broker2:61616,tcp://broker3:61616)
]]></script>
-</div></div>
-
-<p>Only the master broker starts up its transport connectors and so the clients can only connect to the master.</p>
-
-<h3 id="SharedFileSystemMasterSlave-Masterfailure">Master failure</h3>
-
-<p>If the master looses the exclusive lock then it immediately shuts down. If a master shuts down or fails, one of the other slaves will grab the lock and so the topology switches to the following diagram</p>
-
-<p><img class="confluence-embedded-image" src="https://cwiki.apache.org/confluence/download/attachments/35958/MasterFailed.png?version=1&modificationDate=1153806959000&api=v2" data-image-src="/confluence/download/attachments/35958/MasterFailed.png?version=1&modificationDate=1153806959000&api=v2"></p>
-
-<p>One of the other other slaves immediately grabs the exclusive lock on the file system to them commences becoming the master, starting all of its transport connectors.</p>
-
-<p>Clients loose connection to the stopped master and then the failover transport tries to connect to the available brokers - of which the only one available is the new master.</p>
-
-<h3 id="SharedFileSystemMasterSlave-Masterrestart">Master restart</h3>
-
-<p>At any time you can restart other brokers which join the cluster and start as slaves waiting to become a master if the master is shutdown or a failure occurs. So the following topology is created after a restart of an old master...</p>
-
-<p><img class="confluence-embedded-image" src="https://cwiki.apache.org/confluence/download/attachments/35958/MasterRestarted.png?version=1&modificationDate=1153806958000&api=v2" data-image-src="/confluence/download/attachments/35958/MasterRestarted.png?version=1&modificationDate=1153806958000&api=v2"></p></div>
+</div></div><p>Only the master broker starts up its transport connectors and so the clients can only connect to the master.</p><h3 id="SharedFileSystemMasterSlave-Masterfailure">Master failure</h3><p>If the master looses the exclusive lock then it immediately shuts down. If a master shuts down or fails, one of the other slaves will grab the lock and so the topology switches to the following diagram</p><p><img class="confluence-embedded-image" src="https://cwiki.apache.org/confluence/download/attachments/35958/MasterFailed.png?version=1&modificationDate=1153806959000&api=v2" data-image-src="/confluence/download/attachments/35958/MasterFailed.png?version=1&modificationDate=1153806959000&api=v2"></p><p>One of the other other slaves immediately grabs the exclusive lock on the file system to them commences becoming the master, starting all of its transport connectors.</p><p>Clients loose connection to the stopped master and then the failover transport tries to connect to
the available brokers - of which the only one available is the new master.</p><h3 id="SharedFileSystemMasterSlave-Masterrestart">Master restart</h3><p>At any time you can restart other brokers which join the cluster and start as slaves waiting to become a master if the master is shutdown or a failure occurs. So the following topology is created after a restart of an old master...</p><p><img class="confluence-embedded-image" src="https://cwiki.apache.org/confluence/download/attachments/35958/MasterRestarted.png?version=1&modificationDate=1153806958000&api=v2" data-image-src="/confluence/download/attachments/35958/MasterRestarted.png?version=1&modificationDate=1153806958000&api=v2"></p><h3 id="SharedFileSystemMasterSlave-SchedulerSupport">Scheduler Support</h3><p>ActiveMQ maintains information about schedules independent to the settings in the persistence adapter. With a shared file-system it is therefore important to tell ActiveMQ expressly where to store scheduler in
formation. To do this, set the <code>dataDirectory</code> attribute on the <code>broker</code>, for example:</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<script class="theme: Default; brush: xml; gutter: false" type="syntaxhighlighter"><![CDATA[<broker xmlns="http://activemq.apache.org/schema/core"
+dataDirectory="/some/location"
+brokerName="mmuserb2" useJmx="true" advisorySupport="false"
+persistent="true" deleteAllMessagesOnStartup="false"
+useShutdownHook="false" schedulerSupport="true">]]></script>
+</div></div></div>
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