[ClusterLabs] VIP monitoring failing with Timed Out error

[Dejan Muhamedagic]

Hi,

On Thu, Oct 29, 2015 at 10:40:18AM +0530, Pritam Kharat wrote:
> Thank you very much Ken for reply. I will try your suggested steps.

If you cannot figure out from the logs why the stop operation
times out, you can also try to trace the resource agent:

# crm resource help trace
# crm resource trace vip stop

Then take a look at the trace or post it somewhere.

Thanks,

Dejan

> 
> On Wed, Oct 28, 2015 at 11:23 PM, Ken Gaillot <kgaillot at redhat.com> wrote:
> 
> > On 10/28/2015 03:51 AM, Pritam Kharat wrote:
> > > Hi All,
> > >
> > > I am facing one issue in my two node HA. When I stop pacemaker on ACTIVE
> > > node, it takes more time to stop and by this time VIP migration with
> > other
> > > resources migration fails to STANDBY node. (I have seen same issue in
> > > ACTIVE node reboot case also)
> >
> > I assume STANDBY in this case is just a description of the node's
> > purpose, and does not mean that you placed the node in pacemaker's
> > standby mode. If the node really is in standby mode, it can't run any
> > resources.
> >
> > > Last change: Wed Oct 28 02:52:57 2015 via cibadmin on node-1
> > > Stack: corosync
> > > Current DC: node-1 (1) - partition with quorum
> > > Version: 1.1.10-42f2063
> > > 2 Nodes configured
> > > 2 Resources configured
> > >
> > >
> > > Online: [ node-1 node-2 ]
> > >
> > > Full list of resources:
> > >
> > >  resource (upstart:resource): Stopped
> > >  vip (ocf::heartbeat:IPaddr2): Started node-2 (unmanaged) FAILED
> > >
> > > Migration summary:
> > > * Node node-1:
> > > * Node node-2:
> > >
> > > Failed actions:
> > >     vip_stop_0 (node=node-2, call=-1, rc=1, status=Timed Out,
> > > last-rc-change=Wed Oct 28 03:05:24 2015
> > > , queued=0ms, exec=0ms
> > > ): unknown error
> > >
> > > VIP monitor is failing over here with error Timed Out. What is the
> > general
> > > reason for TimeOut. ? I have kept default-action-timeout=180secs which
> > > should be enough for monitoring
> >
> > 180s should be far more than enough, so something must be going wrong.
> > Notice that it is the stop operation on the active node that is failing.
> > Normally in such a case, pacemaker would fence that node to be sure that
> > it is safe to bring it up elsewhere, but you have disabled stonith.
> >
> > Fencing is important in failure recovery such as this, so it would be a
> > good idea to try to get it implemented.
> >
> > > I have added order property -> when vip is started then only start other
> > > resources.
> > > Any clue to solve this problem ? Most of the time this VIP monitoring is
> > > failing with Timed Out error.
> >
> > The "stop" in "vip_stop_0" means that the stop operation is what failed.
> > Have you seen timeouts on any other operations?
> >
> > Look through the logs around the time of the failure, and try to see if
> > there are any indications as to why the stop failed.
> >
> > If you can set aside some time for testing or have a test cluster that
> > exhibits the same issue, you can try unmanaging the resource in
> > pacemaker, then:
> >
> > 1. Try adding/removing the IP via normal system commands, and make sure
> > that works.
> >
> > 2. Try running the resource agent manually (with any verbose option) to
> > start/stop/monitor the IP to see if you can reproduce the problem and
> > get more messages.
> >
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> >
> 
> 
> 
> -- 
> Thanks and Regards,
> Pritam Kharat.

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