[ClusterLabs] Command to show location constraints?

Jan Pokorný jpokorny at redhat.com
Wed Aug 28 04:03:47 EDT 2019

On 27/08/19 09:24 -0600, Casey & Gina wrote:
> Hi, I'm looking for a way to show just location constraints, if they
> exist, for a cluster.  I'm looking for the same data shown in the
> output of `pcs config` under the "Location Constraints:" header, but
> without all the rest, so that I can write a script that checks if
> there are any set.
> The situation is that sometimes people will perform a failover with
> `pcs resource move --master <resource>`, but then forget to follow
> it up with `pcs resource clear <resource>`, and then it causes
> unnecessary failbacks later.  As we never want to have any
> particular node in the cluster preferred for this resource, I'd like
> to write a script that can automatically check for any location
> constraints being set and either alert or clear it automatically.

One could also think of "crm_resource --clear --dry-run" that doesn't
exist yet.  Please, file a RFE with https://bugs.clusterlabs.org if
this would be useful.

Jan (Poki)
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