[ClusterLabs] Antw: [EXT] Re: Can a two node cluster start resources if only one node is booted?

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Fri Apr 22 04:26:56 EDT 2022


>>> "john tillman" <johnt at panix.com> schrieb am 21.04.2022 um 20:18 in
Nachricht
<e9e14dceb9c7b4f401fb8e28483cbb0b.squirrel at mail.panix.com>:
...
> Once the other node is started, something starts the pacemaker service. 

Is the pacmemaker started, or does it begin to perform actions once it has a
quorum?

> pacemaker log starts filling up.  journalctl ‑b sees plenty of pacemaker
> entires.  crm_mon and pcs status are working right and show the cluster in
> a good state with all resources started properly.
> 
> So I don't see anything stopping pacemaker from starting at boot.  It

If it's really pacemaker not starting on boot: Maybe it's waiting for time
sync? (Just a thought)

> looks like some piece of cluster software is starting it once the second
> node is online.  Maybe corosync?  Although the corosync log doesn't
> mention the start of anything.  All it logs is seeing the second node
> join.
> 
> So what starts pacemaker in this case?

systemd usually. What about systemctl status pacemaker (or similar)?

Regards,
Ulrich



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