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2993c99363
Sometimes the hostStats object of the agents becomes null in the management server. It is a rare situation, and we haven't found the root cause yet, but it occurs occasionally in our CloudStack deployments with many hosts. The hostStat is null, even though the agent is UP and hosting multiple VMs. It is possible to access the VM consoles and execute tasks on them. This pull request doesn't address the issue directly; rather it displays those hosts in Prometheus so we can restart the agent and get the necessary information.