<span lang="EN-US">ms_MySQL:Master it's not a resource just one state</span><br><br><div class="gmail_quote">2012/6/25 Stallmann, Andreas <span dir="ltr"><<a href="mailto:AStallmann@conet.de" target="_blank">AStallmann@conet.de</a>></span><br>
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<p class="MsoNormal">Hi!<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><span lang="EN-US">We are currently switching from mysql-on-drbd with tomcat and a shared IP to mysql-master-slave with tomcat-master-slave and shared IP and an additonal cloned service (activemq).<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Up until now we had quite an easy setup – especially for the admins who did the daily maintenance. All services (exept drbd) where grouped like this:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Resource Group: cluster_grp<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> fs_r0 (ocf::heartbeat:Filesystem): Started qs-cms-appl01<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> sharedIP (ocf::heartbeat:IPaddr2): Started qs-cms-appl01<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> database_res (ocf::heartbeat:mysql): Started qs-cms-appl01<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> tomcat_res (ocf::ucrs:tomcat): Started qs-cms-appl01<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Master/Slave Set: ms_drbd_r0<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Masters: [ qs-cms-appl01 ]<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> Slaves: [ qs-cms-appl02 ]<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">There was only one further colocation-constrain, which let fs_r0 only run where ms_drbd was running in Master mode. Easy.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Now, with our new scenario, the situation is a little more complex. First, the start order:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">sharedIP<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">ms_MySQL:Master<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">activemq_clone<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">ms_tomcat:Master<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">then the constrains:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">ms_MySQL:Master only where shared_IP<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">ms_tomcat:Master only where database<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">activemq_clone only where database <u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I thought this might be quite easy to achieve with grouping the services, but crm won’t let me put Master/Slave resource into a group. Why is that?
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">If I try...<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">group cluster-grp p_writer_vip ms_MySQL:Master activemq_clone ms_tomcat:Master<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I get:<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">ERROR: object ms_MySQL:Master does not exist<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">ERROR: object ms_tomcat:Master does not exist<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Any ideas welcome.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Cheers and thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Andreas<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif";color:gray" lang="EN-US">--<br>
CONET Solutions GmbH </span><span lang="EN-US"><u></u><u></u></span></p>
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