[Pacemaker] Master/slave colocation

[Chris Feist]

On 10/17/13 11:15, Sam Gardner wrote:
> I have a two-node, six resource cluster configured.
>
> Two VIP addresses w/link monitoring, and a DRBD master/slave set configured
> exactly as in the Clusters from Scratch documentation.
>
> I want to make the DRBD master always be on the same node as the ExternalVIP in
> my configuration.
>
> To do this, I run:
> # pcs constraint colocation add WebDataClone with ExternalVIP
>
> This causes the secondary DRBD node to stop.
>
> Is this expected behavior for the pcs constraint command that I showed? If so,
> what is the proper procedure for making the Master node always be running on the
> same node as my ExternalVIP?

Can you try 'pcs constraint colocation add master WebDataClone with ExternalVIP'

Thanks,
Chris


>
> Thanks for any help - status follows.
> Sam Gardner
>
> *PCS status and cat /proc/drbd before*
>
> Cluster name:
> Last updated: Thu Oct 17 16:04:40 2013
> Last change: Thu Oct 17 16:03:02 2013 via cibadmin on pacemaker-master
> Stack: classic openais (with plugin)
> Current DC: pacemaker-master - partition with quorum
> Version: 1.1.8-1
> 2 Nodes configured, 2 expected votes
> 6 Resources configured.
>
>
> Online: [ pacemaker-master pacemaker-slave ]
>
> Full list of resources:
>
>   ExternalVIP    (**):       Started pacemaker-master
>   Eth1Monitor    (**):    Started pacemaker-master
>   InternalVIP    (**):       Started pacemaker-master
>   Eth2Monitor    (**):    Started pacemaker-master
>   Master/Slave Set: WebDataClone [WebData]
>       Masters: [ pacemaker-master ]
>       Slaves: [ pacemaker-slave ]
>
>
> [root at pacemaker-master ~]# cat /proc/drbd
> version: 8.3.11 (api:88/proto:86-96)
> srcversion: E750A52708C7363DA649D31
>
>   1: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r-----
>      ns:0 nr:0 dw:0 dr:664 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
>
> *PCS status and cat /proc/drbd after*
>
> Cluster name:
> Last updated: Thu Oct 17 16:13:22 2013
> Last change: Thu Oct 17 16:13:05 2013 via cibadmin on pacemaker-master
> Stack: classic openais (with plugin)
> Current DC: pacemaker-master - partition with quorum
> Version: 1.1.8-1.tos2-394e906
> 2 Nodes configured, 2 expected votes
> 6 Resources configured.
>
>
> Online: [ pacemaker-master pacemaker-slave ]
>
> Full list of resources:
>
>   ExternalVIP    (**):       Started pacemaker-master
>   Eth1Monitor    (**):    Started pacemaker-master
>   InternalVIP    (**):       Started pacemaker-master
>   Eth2Monitor    (**):    Started pacemaker-master
>   Master/Slave Set: WebDataClone [WebData]
>       Masters: [ pacemaker-master ]
>       Stopped: [ WebData:1 ]
>
>
> version: 8.3.11 (api:88/proto:86-96)
> srcversion: E750A52708C7363DA649D31
>
>   1: cs:WFConnection ro:Primary/Unknown ds:UpToDate/DUnknown C r-----
>      ns:0 nr:0 dw:0 dr:664 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0
>
>
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