[ClusterLabs] Resource switchover taking more time upon shutting off one of the node in a 2 node cluster

[Ken Gaillot]

On Fri, 2018-02-23 at 16:15 +0530, avinash sharma wrote:
> Subject: Switchover of resource(MS) 'RoutingManager' and resource
> group 'floatingips', which have 'colocation' and 'after' constraints
> on each other, are taking around 5 minutes to get promoted when node
> running master instance goes down.

<snip>

When Pacemaker runs the resource agent, it will log any error messages
that the agent prints. I didn't look at the entire log, but I suspect
this is the cause, the promote action didn't succeed during that time:

> Feb 21 21:37:40 [24021] IVM-1       lrmd:   notice:
> operation_finished:	stateful_consul_promote_0:864:stderr [
> ssh_exchange_identification: Connection closed by remote host
>  ]
> Feb 21 21:37:40 [24021] IVM-1       lrmd:   notice:
> operation_finished:	stateful_consul_promote_0:864:stderr [
> rsync: connection unexpectedly closed (0 bytes received so far)
> [sender] ]
> Feb 21 21:37:40 [24021] IVM-1       lrmd:   notice:
> operation_finished:	stateful_consul_promote_0:864:stderr [
> rsync error: unexplained error (code 255) at io.c(226) [sender=3.1.2]
> ]	
-- 
Ken Gaillot <kgaillot at redhat.com>