Controller node would take 30+ mins to reboot which made controller node not accessible during that time
Issue
- Controller node would take 30+ mins to reboot which made controller node not accessible during that time. After the controller rebooting. all resource and openstack service work well .

Environment
- Red Hat OpenStack Platform 7
- Red Hat OpenStack Platform 8
- pacemaker-1.1.13-10.el7_2.2.x86_64
- corosync-2.3.4-7.el7_2.3.x86_64
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