[Linux-HA] colocating resources on failed restart :CRM-Stable-4a0d4e40eeb0

[Serge Dubrouski]

Why not to ombine your resources into a group with collcated=true. In
this case they'll always stick together for all operations:
start/stop/move etc...

On 11/4/06, Alex and Gill Strachan <asgks at yahoo.com> wrote:
> I have a group of resources linked by the name 3A, these resources must always run together so I allocated large co-location scores.
>
> When the resource_sinfids3A_aims fails and it is moved to another node I need all of the 3A resources to move with it and to start before.
>
> e.g.
> resource_sinfids3A_aims  fails on node 3a2
> hb restarts and reduces node weight for that node..
> resource_sinfids3A_aims  fails on node 3a2
> hb is unable to restart on node 3a2 so decides to relocate to 3a1
>
> ...How do I inform hb to stop all the other 3A resources on 3a2 and move
> ...everything to 3a1, also starting in a particular order.
>
> Why didn't the colocation scores help in keeping the 3A resources together?
>
>
> I originally had colocation scores of INFINITY for the 3A group but this then prevents the ability to specifiy that resource smb can fail 3 times while resource aims can only fail once.
>
>
> I originally had this working by using groups and on_fail="fence" but it doesn't offer enough flexibility.
>
> e.g.
> I would like heartbeat to restart smb on failure 3 times before moving to another node; using resource_stickiness.  When using groups the restart of smb would trigger a stop of all higher resources, then start smb followed by start the higher resources.  This behaviour was not wanted.
>
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>
> ============
> Last updated: Sun Nov  5 14:02:46 2006
> Current DC: sinfids3a2 (ec74bd17-2016-4d32-a694-0f6983121cd9)
> 3 Nodes configured.
> 9 Resources configured.
> ============
>
> Node: sinfids3b1 (338afa76-8997-4d66-8381-fc36ec4b456b): online
>        resource_sinfids3B_vip  (heartbeat::ocf:IPaddr)
> Node: sinfids3a2 (ec74bd17-2016-4d32-a694-0f6983121cd9): online
>        resource_sinfids3A_drbd (heartbeat:drbddisk)
>        resource_sinfids3A_fs   (heartbeat::ocf:Filesystem)
>        resource_sinfids3A_smb  (lsb:smb)
>        resource_sinfids3A_vip  (heartbeat::ocf:IPaddr)
>        resource_sinfids3A_oralsnr      (heartbeat::ocf:oralsnr)
>        resource_sinfids3_vip   (heartbeat::ocf:IPaddr)
>        resource_sinfids3A_oracle       (heartbeat::ocf:oracle)
>        resource_sinfids3A_aims (lsb:aims)
> Node: sinfids3a1 (b757aece-0e47-41e5-92b7-6a80b4f3eea7): online
>
>
>
>       <rsc_order id="order_sinfids3_sinfids3A" from="resource_sinfids3_vip" type="after" to="resource_sinfids3A_vip"/>
>       <rsc_order id="order_sinfids3_sinfids3B" from="resource_sinfids3_vip" type="after" to="resource_sinfids3B_vip"/>
>       <rsc_order id="order_sinfids3A_drbd" from="resource_sinfids3A_drbd" type="after" to="resource_sinfids3A_vip"/>
>       <rsc_order id="order_sinfids3A_fs" from="resource_sinfids3A_fs" type="after" to="resource_sinfids3A_drbd"/>
>       <rsc_order id="order_sinfids3A_smb" from="resource_sinfids3A_smb" type="after" to="resource_sinfids3A_fs"/>
>       <rsc_order id="order_sinfids3A_oracle" from="resource_sinfids3A_oracle" type="after" to="resource_sinfids3A_fs"/>
>       <rsc_order id="order_sinfids3A_oralsnr" from="resource_sinfids3A_oralsnr" type="after" to="resource_sinfids3A_oracle"/>
>       <rsc_order id="order_sinfids3A_aims" from="resource_sinfids3A_aims" type="after" to="resource_sinfids3A_oralsnr"/>
>
>       <rsc_colocation id="colocation_sinfids3_sinfids3A" from="resource_sinfids3_vip" to="resource_sinfids3A_vip" score="9000"/>
>       <rsc_colocation id="colocation_sinfids3_sinfids3B" from="resource_sinfids3_vip" to="resource_sinfids3B_vip" score="3000"/>
>
>       <rsc_colocation id="colocation_sinfids3A_drbd" from="resource_sinfids3A_drbd" to="resource_sinfids3A_vip" score="100000"/>
>       <rsc_colocation id="colocation_sinfids3A_fs" from="resource_sinfids3A_fs" to="resource_sinfids3A_drbd" score="100000"/>
>       <rsc_colocation id="colocation_sinfids3A_smb" from="resource_sinfids3A_smb" to="resource_sinfids3A_fs" score="100000"/>
>       <rsc_colocation id="colocation_sinfids3A_oracle" from="resource_sinfids3A_oracle" to="resource_sinfids3A_fs" score="100000"/>
>       <rsc_colocation id="colocation_sinfids3A_oralsnr" from="resource_sinfids3A_oralsnr" to="resource_sinfids3A_oracle" score="100000"/>
>       <rsc_colocation id="colocation_sinfids3A_aims" from="resource_sinfids3A_aims" to="resource_sinfids3A_oralsnr" score="100000"/>
>
>
>       <primitive class="lsb" type="aims" id="resource_sinfids3A_aims" restart_type="restart">
>         <operations>
>           <op name="monitor" timeout="240s" id="aims_sinfids3A_aims_mon" interval="180s"/>
>         </operations>
>         <instance_attributes id="resource_sinfids3A_aims">
>           <attributes>
>             <nvpair id="resource_sinfids3A_aims-target_role" name="target_role" value="started"/>
>           </attributes>
>         </instance_attributes>
>       </primitive>
>
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>
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