http://docwiki.cisco.com/w/index.php?title=RCA_for_Engine_failover&feed=atom&action=history 2013-05-21T20:04:30Z Revision history for this page on the wiki MediaWiki 1.16.0 http://docwiki.cisco.com/w/index.php?title=RCA_for_Engine_failover&diff=34223&oldid=prev 2010-09-24T06:14:29Z

<p>New page: Abrupt Engine mastership failover to the HA node can happen for multiple reasons * &#39;&#39;&#39;Engine process crashed&#39;&#39;&#39; ** How to find it? Refer to <a href="/wiki/How_to_check_if_a_process_crashed" title="How to check if a process crashed"> How to check if a process crashed </a> ** How t...</p> <p><b>New page</b></p><div>Abrupt Engine mastership failover to the HA node can happen for multiple reasons<br /> * '''Engine process crashed'''<br /> ** How to find it? Refer to [[ How to check if a process crashed ]]<br /> ** How to analyze the core file? Refer to [[ How to analyze the core file ]]<br /> <br /> * '''CVD process crashed'''. Engine service is dependent upon CVD service. So if CVD crashes/restarted, Engine too gets restarted, thereby causing mastership failover to the other node.<br /> <br /> * '''Engine ran into OutOfMemory'''<br /> ** Check the MIVR logs for the OOM reason.<br /> *** ''java.lang.OutOfMemoryError: GC overhead limit exceeded''<br /> ** Debug it based upon the OOM reason. Refer to [[ How to debug OutOfMemoryError ]]<br /> <br /> * '''Nodes went into island mode (multiple masters) and recovered'''. Upon recovery publisher node retains mastership.<br /> ** Check the MCVD logs for the failover logs.<br /> * '''Application error happened''', and Engine decided to shutdown<br /> ** Look for ''com.cisco.wfapi.WFKeepAliveException: KeepAliveException in ManagerManagerImpl'' in MIVR logs.</div>

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