** Also affects: pacemaker (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1727063
Title:
Pacemaker package upgrades stop but fail to start pacemaker resulting
in HA outage
Status in OpenStack hacluster charm:
New
Status in pacemaker package in Ubuntu:
New
Bug description:
We have found on our openstack charm-hacluster implementations that
the pacemaker .deb packaging along with the upstream pacemaker
configuration result in pacemaker stopping but not starting upon
package upgrade (while attended or unattended).
This was seen on three separate Xenial clouds. Both Mitaka and Ocata.
The package upgrade today was to pacemaker 1.1.14-2ubuntu1.2.
It appears that pacemaker.prerm stops the service using
"invoke-rc.d pacemaker stop" and then the pacemaker.postinst attempts to
start the service, but silently fails due to policy denial. It appears the
policy check fails because /etc/rcX.d/S*pacemaker does not exist because
/etc/init.d/pacemaker has no Default-Start or Default-Stop entries in the LSB
init headers. (or rather, they are blank.)
I have not checked whether this affects trusty environments.
I'd suggest on systems that use systemd, the pacemaker.postinst script
should check if the service is enabled and start it with systemctl
commands rather than using the cross-platform compatible invoke-rc.d
wrappers. Or upstream pacemaker should get default start/stop
entries.
Our default runlevel on cloud init built images appears to be 5
(graphical), so at least 5 should be present in /etc/init.d/pacemaker
LSB init headers under Default-Start:.
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