[ClusterLabs] Remote nodes in an opt-in cluster

Reid Wahl nwahl at redhat.com
Wed Apr 24 15:36:51 EDT 2024


Jochen,

Just making sure you saw this, since you've replied to Andrei since then

On Tue, Apr 23, 2024 at 12:39 AM Reid Wahl <nwahl at redhat.com> wrote:
>
> On Tue, Apr 23, 2024 at 12:03 AM Jochen <piled.email at gmail.com> wrote:
> >
> > When trying to add a remote node to an opt-in cluster, the cluster does not start the remote resource. When I change the cluster to opt-out the remote resource is started.
> >
> > I guess I have to add a location constraint to allow the cluster to schedule the resource. Is that correct?
> >
> > And if yes, how do I create a location constraint to allow the cluster to start the remote resource anywhere on the cluster? Since I don't want to name each node in the constraint, I looked for a rule that always is true, or an attribute that is defined by default, but did not find one. I then tried
> >
> >         crm configure location skylla-location skylla rule skylla-location-rule: defined '#uname'
> >
> > But this did not work either. Any help would be greatly appreciated.
>
> Strange. I wonder if this is something specific to remote connection
> resources. (I'm not able to test that right now.) What's your
> Pacemaker version and can you share the CIB XML?
>
> The rule that you've described works for me (using a resource that's
> not a remote connection resource):
>
>     <constraints>
>       <rsc_location id="location-dummy" rsc="dummy">
>         <rule id="location-dummy-rule" score="0">
>           <expression id="location-dummy-rule-expr"
> operation="defined" attribute="#uname"/>
>         </rule>
>       </rsc_location>
>     </constraints>
>
>
> >
> > Regards
> > Jochen
> >
> >
> >
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> >
>
>
> --
> Regards,
>
> Reid Wahl (He/Him)
> Senior Software Engineer, Red Hat
> RHEL High Availability - Pacemaker



-- 
Regards,

Reid Wahl (He/Him)
Senior Software Engineer, Red Hat
RHEL High Availability - Pacemaker



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