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Sreejesh_D
Virtuoso
Virtuoso

Is there any option to triger HA when the hostd is unresponsive?

Today one of the ESXi 4.1 hosts in cluster became unresponsive since the hostd hung due to storage failure.  VMs ath the host also were in unresponsive state.

Is there any option to triger HA when the hostd is unresponsive?

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Troy_Clavell
Immortal
Immortal

you may look at going to vSphere5 where HA does some datastore heartbeating.  However, with vSphere4, if you lose storage, that does not constitute an HA even.

Also, if hostd becomes non-responsive and you have guests on the host, your best bet to trigger an HA event would be to power down the ESXi Host in question.  As long as the other nodes in the cluster have a heartbeat connection to the management network, there will be no HA event.

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Sreejesh_D
Virtuoso
Virtuoso

thnx troy,

Here the VMs also went offline. Other than resetting the host for triggering the HA, do we have any other option? coz our global exchange server running on this cluster and cant do a manual host restart at off-office hours. 

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Troy_Clavell
Immortal
Immortal

with a hostd crash, that should not cause the VM's to go down.  With that said, if you had problems with your datastores, then that would cause your VM's to go down.  That is a tough situation.  If hostd crashes and you lose a datastore, I don't know if there is anything you can do at that point.  If a datastore or a set of datastore is unavailable, you won't even be able to "browse datastore" and re-register guests onto other host manually or via scripting.