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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">All nodes in question NTP from the same time source (yes, we have run into synchronicity issues in the past).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Interestingly, increasing the lease from 60 seconds to 120 seconds did not affect the behaviour.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Rob<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> John Lauro [mailto:john.lauro@covenanteyes.com]
<br>
<b>Sent:</b> Monday, August 25, 2014 6:17 PM<br>
<b>To:</b> Sutherland, Rob<br>
<b>Subject:</b> Re: [Pacemaker] SLES 11 SP3 boothd behaviour<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:black">You probably already checked this, but just in case...<br>
<br>
No experience at all with geo-redundancy, but this sounds suspiciously like it could be a time sync problem. Have you tried something like "ntpq -np" on all 3 nodes and verify the offsets are all low (ie: < +/- 10) and times are in sync?<br>
(Assuming you are running ntpd, and the process didn't stop.)<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-family:"Helvetica","sans-serif";color:black">From:
</span></b><span style="font-family:"Helvetica","sans-serif";color:black">"Rob Sutherland" <<a href="mailto:RSutherland@BroadViewNet.com">RSutherland@BroadViewNet.com</a>><br>
<b>To: </b><a href="mailto:pacemaker@oss.clusterlabs.org">pacemaker@oss.clusterlabs.org</a><br>
<b>Sent: </b>Monday, August 25, 2014 3:43:34 PM<br>
<b>Subject: </b>[Pacemaker] SLES 11 SP3 boothd behaviour</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Hello all,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">We’re in the process of implementing geo-redundancy on SLES 11 SP3 (version 0.1.0). We are seeing behavior in which site 2 in a geo-cluster decides that the ticket
has expired long before actual expiry. Here’s an example time-line:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">1 - All sites (site 1, site 2 and arbitrator) agree on ticket owner and expiry. i.e. site 2 has the ticket with a 60-second expiry:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:10 linux-4i31 booth-arbitrator: [22526]: info: command: 'crm_ticket -t geo-ticket -S expires -v 1408975690' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:10 bb5Btas0 booth-site: [27782]: info: command: 'crm_ticket -t geo-ticket -S expires -v 1408975690' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:10 bb5Atas1 booth-site: [7826]: info: command: 'crm_ticket -t geo-ticket -S expires -v 1408975690' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">2 - After 48 seconds (80% into lease), all three nodes are still in agreement:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Site 2:
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:58 bb5Btas0 booth-site: [27782]: info: command: 'crm_ticket -t geo-ticket -S owner -v 2' was executed
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:58 bb5Btas0 booth-site: [27782]: info: command: 'crm_ticket -t geo-ticket -S expires -v 1408975738' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">The arbitrator:
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:58 linux-4i31 crm_ticket[23836]: notice: crm_log_args: Invoked: crm_ticket -t geo-ticket -S owner -v 2<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:58 linux-4i31 booth-arbitrator: [22526]: info: command: 'crm_ticket -t geo-ticket -S expires -v 1408975738' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Site 1:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:58 bb5Atas1 booth-site: [7826]: info: command: 'crm_ticket -t geo-ticket -S owner -v 2' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:07:58 bb5Atas1 booth-site: [7826]: info: command: 'crm_ticket -t geo-ticket -S expires -v 1408975738' was executed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">3 - Site 2 decides that the ticket has expired (at the expiry time set in step 1)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Aug 25 10:08:10 bb5Btas0 booth-site: [27782]: debug: lease expires ...<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">4 - At 10:08:58, both site 1 and the arbitrator expire the lease and pick a new master.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">I presume that there was some missed communication between site 2 and the rest of the geo-cluster. There is nothing in the logs to help debug this, though. Any
hints on debugging this?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">BTW: we only ever see this on a site 2 – never a site 1. This is consistent across several labs. Is there a bias towards site 1?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Thanks in advance,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">Rob<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Helvetica","sans-serif";color:black"><br>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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