[ClusterLabs] why is node fenced ?

[Lentes, Bernd]

Hi,

last Friday (9th of August) i had to install patches on my two-node cluster.
I put one of the nodes (ha-idg-2) into standby (crm node standby ha-idg-2), patched it, rebooted, 
started the cluster (systemctl start pacemaker) again, put the node again online, everything fine.

Then i wanted to do the same procedure with the other node (ha-idg-1).
I put it in standby, patched it, rebooted, started pacemaker again.
But then ha-idg-1 fenced ha-idg-2, it said the node is unclean.
I know that nodes which are unclean need to be shutdown, that's logical.

But i don't know from where the conclusion comes that the node is unclean respectively why it is unclean,
i searched in the logs and didn't find any hint.

I put the syslog and the pacemaker log on a seafile share, i'd be very thankful if you'll have a look.
https://hmgubox.helmholtz-muenchen.de/d/53a10960932445fb9cfe/

Here the cli history of the commands:

17:03:04  crm node standby ha-idg-2
17:07:15  zypper up (install Updates on ha-idg-2)
17:17:30  systemctl reboot
17:25:21  systemctl start pacemaker.service
17:25:47  crm node online ha-idg-2
17:26:35  crm node standby ha-idg1-
17:30:21  zypper up (install Updates on ha-idg-1)
17:37:32  systemctl reboot
17:43:04  systemctl start pacemaker.service
17:44:00  ha-idg-1 is fenced

Thanks.

Bernd

OS is SLES 12 SP4, pacemaker 1.1.19, corosync 2.3.6-9.13.1


-- 

Bernd Lentes 
Systemadministration 
Institut für Entwicklungsgenetik 
Gebäude 35.34 - Raum 208 
HelmholtzZentrum münchen 
bernd.lentes at helmholtz-muenchen.de 
phone: +49 89 3187 1241 
phone: +49 89 3187 3827 
fax: +49 89 3187 2294 
http://www.helmholtz-muenchen.de/idg 

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