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<p class="MsoNormal">Makes sense.<o:p></o:p></p>
<p class="MsoNormal">Thank you!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> Users <users-bounces@clusterlabs.org> <b>On Behalf Of
</b>Ken Gaillot<br>
<b>Sent:</b> Thursday, April 7, 2022 10:25 AM<br>
<b>To:</b> Cluster Labs - All topics related to open-source clustering welcomed <users@clusterlabs.org><br>
<b>Subject:</b> [EXTERNAL] Re: [ClusterLabs] Pacemaker / ubuntu doesn't see my sbd device: what am I missing?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">[EXTERNAL SENDER: This email originated from outside of Stratus Technologies. Do not click links or open attachments unless you recognize the sender and know the content is safe.]<br>
<br>
With watchdog-only SBD you don't need a fence agent; it's built-in to<br>
Pacemaker when you set the stonith-watchdog-timeout cluster property.<br>
<br>
However watchdog-only SBD isn't sufficient for a 2-node cluster,<br>
because each node will assume the other self-fences but neither will.<br>
You need either a shared disk or true quorum (via a third node or<br>
corosync-qdevice).<br>
<br>
On Wed, 2022-04-06 at 19:34 +0000, Tavanyar, Simon wrote:<br>
> This is my first time using Pacemaker, and I wanted to try watchdog-<br>
> only fencing with SBD.<br>
> I’m running on Ubuntu 21.10 and Pacemaker v2.0.5<br>
> My cluster is up just fine with Dummy services on two nodes.<br>
> Systemd says my sbd device is active and running.<br>
> But the ‘stonith’ command that Pacemaker uses won’t find it, so the<br>
> resource fails to start in the cluster.<br>
> <br>
> Help much appreciated!<br>
> Thanks<br>
> Simon<br>
> <br>
> <br>
> <br>
> $ sudo stonith -t external/sbd -E -S<br>
> external/sbd[361914]: ERROR: No sbd device(s) found in the<br>
> configuration.<br>
> WARN: external_status: 'sbd status' failed with rc 1<br>
> ERROR: external/sbd device not accessible.<br>
> <br>
> <br>
> $ systemctl status sbd<br>
> ● sbd.service - Shared-storage based fencing daemon<br>
> Loaded: loaded (/lib/systemd/system/sbd.service; enabled; vendor<br>
> preset: enabled)<br>
> Active: active (running) since Fri 2022-04-01 15:18:04 EDT; 4 days<br>
> ago<br>
> Docs: man:sbd(8)<br>
> Process: 2474278 ExecStart=/usr/sbin/sbd $SBD_OPTS -p<br>
> /var/run/sbd.pid watch (code=exited, status=0/SUCCESS)<br>
> Main PID: 2474279 (sbd)<br>
> Tasks: 3 (limit: 38258)<br>
> Memory: 11.2M<br>
> CPU: 4min 7.329s<br>
> CGroup: /system.slice/sbd.service<br>
> <span style="font-family:"Arial",sans-serif">├</span>─2474279 sbd: inquisitor<br>
> <span style="font-family:"Arial",sans-serif">├</span>─2474280 sbd: watcher: Pacemaker<br>
> └─2474281 sbd: watcher: Cluster<br>
> <br>
> <br>
> $ sudo pcs status<br>
> Cluster name: Axx<br>
> Cluster Summary:<br>
> * Stack: corosync<br>
> * Current DC: node0 (version 2.0.5-ba59be7122) - partition with<br>
> quorum<br>
> * Last updated: Wed Apr 6 14:38:44 2022<br>
> * Last change: Wed Apr 6 14:38:35 2022 by root via cibadmin on<br>
> node0<br>
> * 2 nodes configured<br>
> * 6 resource instances configured<br>
> <br>
> Node List:<br>
> * Online: [ node0 node1 ]<br>
> <br>
> Full List of Resources:<br>
> * Resource Group: AxxDummy:<br>
> * p_Dummy_1 (ocf::heartbeat:Dummy): Started node0<br>
> * p_Dummy_2 (ocf::heartbeat:Dummy): Started node0<br>
> * p_Dummy_3 (ocf::heartbeat:Dummy): Started node0<br>
> * ClusterIP (ocf::heartbeat:IPaddr2): Started node0<br>
> * p_Dummy_4 (ocf::heartbeat:Dummy): Started node0<br>
> * fence-sbd (stonith:external/sbd): Stopped<br>
> <br>
> Failed Resource Actions:<br>
> * fence-sbd_start_0 on node0 'error' (1): call=51,<br>
> status='complete', exitreason='', last-rc-change='2022-04-06 14:38:13<br>
> -04:00', queued=0ms, exec=3102ms<br>
> * fence-sbd_start_0 on node1 'error' (1): call=41,<br>
> status='complete', exitreason='', last-rc-change='2022-04-06 14:38:09<br>
> -04:00', queued=0ms, exec=3094ms<br>
> <br>
> Daemon Status:<br>
> corosync: active/enabled<br>
> pacemaker: active/enabled<br>
> pcsd: active/enabled<br>
> sbd: active/enabled<br>
> <br>
> <br>
> This is from /var/log/syslog<br>
> Apr 6 14:40:43 ubuntuserver pacemaker-controld[349716]: notice:<br>
> Requesting local execution of start operation for fence-sbd on node0<br>
> Apr 6 14:40:43 ubuntuserver external/sbd[349924]: [349930]: ERROR: No<br>
> sbd device(s) found in the configuration.<br>
> Apr 6 14:40:46 ubuntuserver pacemaker-fenced[349712]: notice:<br>
> Operation 'monitor' [349931] for device 'fence-sbd' returned: -61 (No<br>
> data available)<br>
> Apr 6 14:40:46 ubuntuserver pacemaker-fenced[349712]: warning: fence-<br>
> sbd:349931 [ Performing: stonith -t external/sbd -E -S ]<br>
> Apr 6 14:40:46 ubuntuserver pacemaker-fenced[349712]: warning: fence-<br>
> sbd:349931 [ failed: 1 ]<br>
> <br>
> _______________________________________________<br>
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> <br>
> ClusterLabs home: <a href="https://www.clusterlabs.org">
https://www.clusterlabs.org/</a><br>
-- <br>
Ken Gaillot <<a href="mailto:kgaillot@redhat.com">kgaillot@redhat.com</a>><br>
<br>
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