[ClusterLabs] Running several instances of a Corosync/Pacemaker cluster on a node
Robert.Dahlem at gmx.net
Tue Apr 26 04:49:02 EDT 2016
On 26.04.2016 10:33, Bogdan Dobrelya wrote:
> Is it possible to run several instances of a Corosync/Pacemaker clusters
> on a node? Can a node be a member of several clusters, so they could put
> resources there? I'm sure it's doable with separate nodes or containers,
> but that's not the case.
> My case is to separate data-critical resources, like storage or VIPs,
> from the complex resources like DB or MQ clusters.
> The latter should run with no-quorum-policy=ignore as they know how to
> deal with network partitions/split-brain, use own techniques to protect
> data and don't want external fencing from a Pacemaker, which
> no-quorum-policy/STONITH is.
> The former must use STONITH (or a stop policy, if it's only a VIP), as
> they don't know how to deal with split-brain, for example.
And how would you cope with one of the storage nodes STONITHing one of
the DB nodes?
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