Pacemaker resource constraints cause API outage during maintenance

Bug #1802108 reported by Lukas Bezdicka on 2018-11-07
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Lukas Bezdicka

Bug Description

In more targeted testing of OSP10 minor update we found out there is an issue with way pacemaker services are created and how we defined the order constraints. We will have to provide fix for all the releases of OSP, but for OSP10 we probably will go with workaround I created and tested. Issue is pacemaker resource order constraints are kind Optional which means they do not apply on shutdown of pacemaker cluster on the node. This causes haproxy to be stopped before the VIP is migrated away from the node and subsequent APIs failure. Migration of VIPs will be applied in script but we should also update the reboot documentation/procedure for the operators.

This bug applies to all minor update procedures.

Changed in tripleo:
milestone: stein-2 → stein-3

Is this stillan issue?

Lukas Bezdicka (social-b) wrote :

Yes, sadly. There is progress but also mixup of tracking LP issues. Ill try to make order in this today.

Changed in tripleo:
milestone: stein-3 → stein-rc1
Changed in tripleo:
milestone: stein-rc1 → train-1
Changed in tripleo:
milestone: train-1 → train-2
Changed in tripleo:
milestone: train-2 → train-3
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