[Pacemaker] Recovery after lost quorum

Andrew Beekhof andrew at beekhof.net
Tue Jun 4 21:34:58 EDT 2013


On 05/06/2013, at 10:43 AM, Denis Witt <denis.witt at concepts-and-training.de> wrote:

> 
> Am 05.06.2013 um 02:15 schrieb Andrew Beekhof <andrew at beekhof.net>:
> 
>>> Jun  5 01:11:06 test4 pengine: [18625]: WARN: cluster_status: We do not have quorum - fencing and resource management disabled
>>> Jun  5 01:11:06 test4 pengine: [18625]: notice: LogActions: Start   pingtest:0#011(test4 - blocked)
>>> Jun  5 01:11:06 test4 pengine: [18625]: notice: LogActions: Start   drbd:0#011(test4 - blocked)
>> 
>> Here's your reason.  We didn't get quorum until:
> 
>>> Jun  5 01:11:11 test4 crmd: [18626]: notice: ais_dispatch_message: Membership 128: quorum acquired
> 
> Hi Andrew,
> 
> I thought this means that there is a quorum. Anyway, crm status says:
> 
> root at test4:~# crm status
> ============
> Last updated: Wed Jun  5 02:36:20 2013
> Last change: Tue Jun  4 17:55:28 2013 via crm_attribute on backup3
> Stack: openais
> Current DC: test4 - partition with quorum
> Version: 1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff
> 3 Nodes configured, 3 expected votes
> 8 Resources configured.
> ============
> 
> Online: [ test4 backup3 ]
> OFFLINE: [ test3 ]
> 
> But no resources are started, so I suspect there really is quorum.


Can you send me the output of cibadmin -Ql please?
Perhaps those two resources are blocked for other reasons.

> Anyway, I noticed, that, if I start pacemaker on the backup3-node the services are restarted, even if it sometime takes some time. So I might have to live with the "not installed" messages and start the backup3-node in standby-Mode as long no one comes up with a better solution. Maybe I'll fake the status of the monitors on this node and add some location-rules to avoid that resources will be moved to this node.
> 
> Thanks for your help.
> 
> Best regards,
> Denis Witt
> 
> 
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