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Posted to commits@qpid.apache.org by ac...@apache.org on 2014/04/25 16:06:02 UTC
svn commit: r1590032 -
/qpid/trunk/qpid/doc/book/src/cpp-broker/Active-Passive-Cluster.xml
Author: aconway
Date: Fri Apr 25 14:06:02 2014
New Revision: 1590032
URL: http://svn.apache.org/r1590032
Log:
NO-JIRA: HA documentation update, not on importance of "chkconfig qpidd off"
Modified:
qpid/trunk/qpid/doc/book/src/cpp-broker/Active-Passive-Cluster.xml
Modified: qpid/trunk/qpid/doc/book/src/cpp-broker/Active-Passive-Cluster.xml
URL: http://svn.apache.org/viewvc/qpid/trunk/qpid/doc/book/src/cpp-broker/Active-Passive-Cluster.xml?rev=1590032&r1=1590031&r2=1590032&view=diff
==============================================================================
--- qpid/trunk/qpid/doc/book/src/cpp-broker/Active-Passive-Cluster.xml (original)
+++ qpid/trunk/qpid/doc/book/src/cpp-broker/Active-Passive-Cluster.xml Fri Apr 25 14:06:02 2014
@@ -403,13 +403,36 @@ ssl_addr = "ssl:" host [":" port]'
</section>
<section id="ha-rm-config">
- <title>Configuring <command>rgmanager</command> as resource manager</title>
+ <title>Configuring with <command>rgmanager</command> as resource manager</title>
<para>
This section assumes that you are already familiar with setting up and configuring
clustered services using <command>cman</command> and
<command>rgmanager</command>. It will show you how to configure an active-passive,
hot-standby <command>qpidd</command> HA cluster with <command>rgmanager</command>.
</para>
+ <note>
+ <para>
+ Once all components are installed it is important to take the following step:
+ <programlisting>
+ chkconfig rgmanager on
+ chkconfig cman on
+ chkconfig qpidd <emphasis>off</emphasis>
+ </programlisting>
+ </para>
+ <para>
+ The qpidd service must be <emphasis>off</emphasis> in
+ <literal>chkconfig</literal> because <literal>rgmanager</literal> will
+ start and stop <literal>qpidd</literal>. If the normal system init
+ process also attempts to start and stop qpidd it can cause rgmanager to
+ lose track of qpidd processes. The symptom when this happens is that
+ <literal>clustat</literal> shows a <literal>qpidd</literal> service to
+ be stopped when in fact there is a <literal>qpidd</literal> process
+ running. The <literal>qpidd</literal> log will show errors like this:
+ <programlisting>
+ critical Unexpected error: Daemon startup failed: Cannot lock /var/lib/qpidd/lock: Resource temporarily unavailable
+ </programlisting>
+ </para>
+ </note>
<para>
You must provide a <literal>cluster.conf</literal> file to configure
<command>cman</command> and <command>rgmanager</command>. Here is
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