[Pacemaker] why dead node bring back ?

[David Vossel]

----- Original Message -----
> From: "Mars gu" <gukaicorosync at 163.com>
> To: "pacemaker" <pacemaker at oss.clusterlabs.org>
> Sent: Friday, October 12, 2012 1:15:15 AM
> Subject: [Pacemaker] why dead node bring back ?
> 
> 
> 
> 
> Hi all,
> my cluster is corosync-2.0.1(used votequorum) and
> pacemaker-1.1.7(come from fedora 17). There are three nodes in it
> (h10_147,h10_148,h10_149).
> I executed the following CLI on h10_147.
> /etc/init.d/pacemaker stop
> /etc/init.d/corosync stop
> 
> then I executed other CLI on h10_148 to delete the node h10_147
> crm node delete h10_147
> !
> So, I find h10_147 disappeared in cluster by the CLI " crm status "
> ********************************************************************************************
> Stack: corosync
> Current DC: h10_149 (353020096) - partition with quorum
> Version: 1.1.7-1.el6-ee0730e13d124c3d58f00016c3376a1de5323cff
> 2 Nodes configured, unknown expected votes
> 6 Resources configured.
> ============
> Online: [ h10_149 h10_148 ]
> **********************************************************************************************
> 
> 
> So far, all the state is correct, but the strange problem will happen
> next.
> I executed the following CLI on h10_148 to try to delete h10_148. /e!
> tc/init.d/pacemaker stop
> /etc/init.d/corosync stop
> when I want to delete h10_148 on h10_149 , I find that the node
> h10_147 bring back to life in cluster.
> *****************************************************************
> 3 Nodes configured, unknown expected votes
> 6 Resources configured.
> ============
> Online: [ h10_149 ]
> OFFLINE: [ h10_147 h10_148 ]
> ***************************************************************
> what is the reason of this problem ?

You also have to delete references to the node in the node status section of the cib. We should build the cib part into crm_node delete at some point.

http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/_removing_a_cluster_node.html

--Vossel

> Best Regards,
> Mars Gu
> 
> 
> 
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