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rhel-osp-director: 7.3->8.0 upgrade with cinder/glance NFS backend fails during major-upgrade-pacemaker.yaml step. openstack-cinder-scheduler pcs resource fails to start on 2 out of 3 controllers. Environment: openstack-tripleo-heat-templates-0.8.14-7.el7ost.noarch instack-undercloud-2.2.7-4.el7ost.noarch openstack-puppet-modules-7.0.17-1.el7ost.noarch openstack-tripleo-heat-templates-kilo-0.8.14-7.el7ost.noarch Steps to reproduce: 1. deploy 7.3 with glance/cinder using NFS 2. Attempt to upgrade the setup to 8.0 Result: Upgrade fails: "ERROR: cluster remained unstable for more than 1800 seconds, exiting.\n Checking the cluster unable to revive the openstack-cinder-scheduler resources. Expected result: the upgrade should continue.
The upgrade failure on the investigated environment was induced by DNS instability.
based on comment 2 and based on bug 1325476 which completed an upgrade with NFS backends, closing this bug. Please reopen if it reproduces.