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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Currently our system have 99.96% uptime. But our goal is to increase it beyond 99.999%. Now we are studying the reliability/performance/features of pacemaker to replace the existing clustering solution.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">While testing pacemaker, I have encountered a problem. If the DC (crm daemon) is frozen by sending the SIGSTOP signal, crmds in other machines never start election to elect a new DC. Therefore fail-overs, resource restartings and other
cluster decisions will be delayed until the DC is unfrozen. <o:p></o:p></p>
<p class="MsoNormal">Is this the default behavior of pacemaker or is it due to a misconfiguration? Is there any way to avoid this single point of failure?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">For the testing, we use Pacemaker 1.1.12 with Corosync 2.3.3 in SLES 12 SP1 operation system.<o:p></o:p></p>
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<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Shermal Fernando<o:p></o:p></p>
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