Comment 1 for bug 1885430

I'm seeing this as well.

On startup of a bionic-stein nova-compute node with ceilometer-agent subordinate, I'm seeing the following after upgrading to ceilometer-agent-compute 1:12.1.1-0ubuntu1~cloud0, when a node reboots, We see the following in the ceilometer-agent log and no logs after this point, though the service continues to run:

2021-02-16 03:17:13.423 3963 WARNING ceilometer.polling.manager [-] No valid pollsters can be loaded from ['compute'] namespaces

When I checked the service startup in systemd, I found that nova-compute hadn't started up until 2021-02-16 03:19

I'm wondering if there's a missing "Should-Start: nova-compute.service" dependency missing from ceilometer-agent, or if ceilometer-agent should have a retry loop to re-check for valid pollsters for the failed namespace until the compute service is online for querying.