As Miraj pointed in #3, the NodeStatus UVE not updated on stopping a service is due to https://bugs.launchpad.net/juniperopenstack/+bug/1742006
But, restarting the contrail-alarm-gen service wouldn't have fixed the issue.
What do you mean by "After restating Alarm-gen, the system recovered"? Did you see alarms after restarting the contrail-alarm-gen service?
Ankit,
As Miraj pointed in #3, the NodeStatus UVE not updated on stopping a service is due to https:/ /bugs.launchpad .net/juniperope nstack/ +bug/1742006
But, restarting the contrail-alarm-gen service wouldn't have fixed the issue.
What do you mean by "After restating Alarm-gen, the system recovered"? Did you see alarms after restarting the contrail-alarm-gen service?