[ClusterLabs] Preventing switchover in case of failing ping node
kgaillot at redhat.com
Tue Nov 8 22:04:56 CET 2016
On 11/03/2016 08:49 AM, Detlef Gossrau wrote:
> Hi all,
> is it possible to prevent a switchover in a active/passive cluster if a
> ping node completely fails ?
> A ping node is put into maintenance and not reachable for a certain
> time. The cluster nodes getting the information about the failing ping
> node at different times. For example, node 1 - which is the passive node
> - is getting the information earlier than node 2. As a result the
> resources are moved to node 2. But in the case the ping node is not
> available at all, no switchover should be executed. Is it possible to
> prevent this ?
There's no way for one node to predict that all other nodes will also be
unable to see the target. The only workarounds I see are:
* Use a second ping target on a different path, if available
* If the maintenance is planned, you could disable the relevant
constraints during the window
> Thanks for any help !
> Best regards,
More information about the Users