Random VM Power Off

[KGoch]

Just now, all of the VMs on one of my hosts (Host1) just powered off. The only task entry was "Configuring HA on Host1" and it was intiated by the system it seems as there was no user name listed in intiated by. I was able to power the VMs right back up and expereienced almost no down time. Just kind of bizarre the VMs would just go down like that on a single hosts.

Any ideas?

[azn2kew · Accepted solution]

Do you have any power outage or your host heartbeat is disconnected by chance? If you check out the HA cluster settings, and under "Host Isolation Respond" what do they all set to? If it set to "Power Off" that might be the problem if the heartbeat network is isolated. But you didn't noticed anything about your host server power or network issue at the moment so i'm sure what causes it. Have you check to see any logs that point to particular events.

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Regards,

Stefan Nguyen

VMware vExpert 2009

iGeek Systems Inc.

VMware, Citrix, Microsoft Consultant

[KGoch]

That seems to have been the cause. As the host isolation event was set to Power VMs off. I changed the setting to leave VMs on. Im running through the logs now to check for an isolation event.

[Troy_Clavell]

sounds like to me, as Stefan said, it was an isolation response for HA. Leave VM's powered on is a great way to get past it. You can also set HA advanced options to use the vmotion NIC as your isolation NIC as well or increase the isolation timeout.

Here is a great link around HA