Ask questions about HA and vmotion?

[sobigfat0220]

There are three ESXI hosts in the cluster and HA is enabled.

When the uplink state of vswitch2 on the ESXI_A host is down,

vswitch2 runs the service VLAN network associated with the VM.

vswitch1 uplink is normal (management, vmotion, storage communication is here)

Is it possible to trigger a VM in the ESXI_A host to automatically vmotion to the other two ESXI hosts?

[a_p_ · Accepted solution]

Welcome to the Community,

I'm afraid that there's no out-of-the-box solution for this.

You may take a look at the Proactive HA feature, which handles hardware failures. Maybe there's a way to tweak this feature to respond to a network uplink loss!?

Anyway, the most straight forward way to reduce such risks is to have uplink redundancy, i.e. at least two uplinks connected - if possible - to two different physical switches.

André

[Alex_Romeo]

Hi,

I agree with the answer of a.p.

Attached the "vSphere Availability" manual, see page. 37-38

ARomeo

[sobigfat0220]

Thanks for your answer

I want to know if the Proactive HA function only supports version 6.5 and above? The version I currently use is 6.0

At present, the uplink of the environment adopts dual-line dual-switch redundancy.

I was wondering if I encountered the above situation, could I only manually perform vmotion or restore the uplink to solve the problem? Is there a better solution?

[a_p_]

Yes, Proactive HA was introduces in vSphere 6.5.

Anyway, as mentioned I'm not sure whether an uplink failure will/can be configured as a reason for a migration. You'll have to check the documentation if needed.

Other than this, what I could think of would be some kind of monitoring software (or script), which is able to trigger a migration in such a case.

André

[berndweyand]

just an idea: you can create alarms based on VOB (Vmkernel Observations). For example:

This creates a critical alarm on the host that must be manually ackknowledged. Maybe that could trigger proactive HA. Never tested, just an idea.

More about VOB alarms here : https://www.virtuallyghetto.com/2014/04/handy-vsan-vobs-for-creating-vcenter-alarms.html