[Pacemaker] active standby failover

[Rus Hughes]

as an update

node vfontopensips1
node vfontopensips2
primitive ClusterIPPres ocf:heartbeat:IPaddr2 \
    params ip="10.30.0.176" cidr_netmask="32" \
    op monitor interval="5s"
primitive osp ocf:netdev:osp \
    params interval="1s" \
    op monitor interval="5s" \
    meta allow-migrate="true" is-managed="false" migration-threshold="1"
on-fail="standby"
clone osp-clone osp
colocation colc1 +inf: ClusterIPPres osp-clone
colocation osp-with-ip 200: osp-clone ClusterIPPres
property $id="cib-bootstrap-options" \
    dc-version="1.1.8-7.el6-394e906" \
    cluster-infrastructure="cman" \
    stonith-enabled="false" \
    no-quorum-policy="ignore" \
    last-lrm-refresh="1365509847"
rsc_defaults $id="rsc-options" \
    resource-stickiness="100" \
    failure-timeout="5s"


seems to do the trick


On Wed, Apr 10, 2013 at 10:30 AM, Rus Hughes <russell.hughes at gmail.com>wrote:

> Hi,
>
> I hope I've got the right list, I'm still a little confused about where
> CMAN ends and Pacemaker begins! We're using Pacemaker and CMAN on Oracle
> 6.3 to try and create an active/standby failover pair, but seem to have
> some annoying conditions that are making this tricky.
>
> We hae 2 nodes, vfontopensips1 and vfontopensips2 that we want a VIP to
> float between based on the availability of a single daemon we have called
> OSP
>
> We have a daemon, called OSP that we want running at all times on both
> nodes, we dont want Pacemaker to stop/start this so I believe the correct
> thing to do is configure it as unmanaged?
>
> We have one virtual IP that we want on one of the nodes running the OSP
> daemon.
>
> The ideal condition is vfontopensips1 has an instance of OSP and the VIP
> on it and vfontopensips2 has a running instance of OSP on it. If OSP dies
> or fails on vfontopensips1 we want the VIP to move to vfontopensips2
> immediately, we wont want Pacemaker/CMAN to try and restart it.
>
> If OSP is then restarted/fixed manually on vfontopensips1 we'd like
> Pacemaker/CMAN to detect that monitor events are now working and mark the
> node as available but to not move the VIP back to it unless there's a a
> failure on vfontopensips2.
>
> Here's the output of crm configure show
>
> node vfontopensips1
> node vfontopensips2
> primitive ClusterIPPres ocf:heartbeat:IPaddr2 \
>     params ip="10.30.0.176" cidr_netmask="32" \
>     op monitor interval="5s"
> primitive osp ocf:netdev:osp \
>     params interval="1s" \
>     op monitor interval="5s" \
>     meta is-managed="false" migration-threshold="1" on-fail="standby"
> colocation osp-with-ip 200: osp ClusterIPPres
> property $id="cib-bootstrap-options" \
>     dc-version="1.1.8-7.el6-394e906" \
>     cluster-infrastructure="cman" \
>     stonith-enabled="false" \
>     no-quorum-policy="ignore" \
>     last-lrm-refresh="1365509847"
> rsc_defaults $id="rsc-options" \
>     resource-stickiness="100" \
>     migration-threshold="1" \
>     allow-migrate="true" \
>     failure-timeout="5s"
>
> I've attached the OSP OCF file to this email.
>
> This is the output of crm_mon when both OSP instances are up and
> vfontopensips1 has the VIP
>
> *********************
>
> Last updated: Wed Apr 10 10:21:11 2013
> Last change: Tue Apr  9 16:39:00 2013 via cibadmin on vfontopensips1
> Stack: cman
> Current DC: vfontopensips1 - partition with quorum
> Version: 1.1.8-7.el6-394e906
> 2 Nodes configured, unknown expected votes
> 2 Resources configured.
>
>
> Online: [ vfontopensips1 vfontopensips2 ]
>
> ClusterIPPres   (ocf::heartbeat:IPaddr2):    Started vfontopensips1
> osp     (ocf::netdev:osp):    Started (unmanaged) [ vfontopensips1
> vfontopensips2 ]
>
> *********************
>
> If OSP fails vfontopensips1 loses the VIP but the VIP doesnt move to
> vfontopensips2 .. crm_mon outputs
>
> *********************
>
> Last updated: Wed Apr 10 10:22:20 2013
> Last change: Tue Apr  9 16:39:00 2013 via cibadmin on vfontopensips1
> Stack: cman
> Current DC: vfontopensips1 - partition with quorum
> Version: 1.1.8-7.el6-394e906
> 2 Nodes configured, unknown expected votes
> 2 Resources configured.
>
>
> Online: [ vfontopensips1 vfontopensips2 ]
>
> osp     (ocf::netdev:osp):    Started (unmanaged) FAILED [ vfontopensips1
> vfontopensips2 ]
>
> Failed actions:
>     osp_monitor_5000 (node=vfontopensips1, call=96, rc=7,
> status=complete): not running
>     ClusterIPPres_migrate_to_0 (node=vfontopensips1, call=161, rc=3,
> status=complete): unimplemented feature
>     ClusterIPPres_migrate_from_0 (node=vfontopensips2, call=138, rc=3,
> status=complete): unimplemented feature
>
> *********************
>
> If we fix OSP the VIP then comes back up on vfontopensips1
>
> *********************
>
> Last updated: Wed Apr 10 10:23:26 2013
> Last change: Tue Apr  9 16:39:00 2013 via cibadmin on vfontopensips1
> Stack: cman
> Current DC: vfontopensips1 - partition with quorum
> Version: 1.1.8-7.el6-394e906
> 2 Nodes configured, unknown expected votes
> 2 Resources configured.
>
>
> Online: [ vfontopensips1 vfontopensips2 ]
>
> ClusterIPPres   (ocf::heartbeat:IPaddr2):    Started vfontopensips1
> osp     (ocf::netdev:osp):    Started (unmanaged) [ vfontopensips1
> vfontopensips2 ]
>
> *********************
>
> Obviously this isn't the behaviour I'm after as OSP is up and available on
> vfontopensips2 so we'd like the VIP to move there..
>
> Any hints would be great please as this has been confusing me for a few
> days now!
>
> The versions we are using are:
>
> cman-3.0.12.1-49.el6.x86_64
> pacemaker-libs-1.1.8-7.el6.x86_64
> pacemaker-1.1.8-7.el6.x86_64
> pacemaker-cluster-libs-1.1.8-7.el6.x86_64
> pacemaker-cli-1.1.8-7.el6.x86_64
>
> Linux vfontopensips1 2.6.32-279.el6.x86_64 #1 SMP Thu Jun 21 15:00:18 EDT
> 2012 x86_64 x86_64 x86_64 GNU/Linux
>
>
> Cheers,
>
> Rus
>
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