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From Munjo Jung <>
Subject Re: host alert
Date Wed, 06 Nov 2019 00:54:56 GMT
Hello Andrija,
Thank you so much for your quick reply. And the issue has been solved.
The root cause was DB error. There were a storage_pool and its related data
duplicated on DB.
after deleting storage pool id, kvm hosts have recovered their status 'up'
from 'alert'.
I also restarted libvirt and cloudstack agent as you recommended.


On 2019/11/05 16:17:18, Andrija Panic <> wrote:
> Hi
> Before the steps below, I suggest (since your whole rack is affected...)
> verify via telnet "telnet <mgmt-server-IP-address> 8250" -that your mgmt
> server is reachable -  confirm that there is no connectivity issue on IP
> level (firewall and such).
> Then, try the following:
> - stop cloudstack agent
> - restart libvirt (make sure it's restarted, I've seen cases when libvirt
> would not restart due to being stuck etc - confirm that the process has
> new PID)
> - start cloudstack agent
> This will make sure your libvirt has NO pools in it (existing VMs are
> happily running), and CloudStack agents will connect to the management
> server and, hopefully, everything should be fine.
> Regards,
> Andrija

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