Cloudstack Agent Alert state

[muthukrishnang1100]

I have a total of three CloudStack agent hosts. All of them are repeatedly going into the Alert state.
When I perform the recovery steps, the hosts return to the Up state, but after 10 to 15 minutes they go back to Alert again.
This issue is happening on all agent hosts and is continuous.

[DaanHoogland]

@muthukrishnang1100 , any reason they go in alert state? any alert messages? any logs to share?

[muthukrishnang1100]

After reboot, Now hosts are up state. But, before we deleted the system vms, now we again start the system vms, it is still starting state more than a 1 day. no error showing in both management and agent logs, how we find the issue?