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Enthusiast
Enthusiast

VMware HA ?

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Automatic detection of operating system failures. HA detects operating system failures within virtual machines by monitoring heartbeat information. If a failure is detected, the affected virtual machine is automatically restarted on the server.

From
http://www.vmware.com/products/high-availability/features.html

According to above lines:

HA could restart / reset only one/ affected  VM on a ESX host due to hardware / software failures

So, if the h/w or s/w failures occur on host I have learned so far they affect ESX / OS running on bare box ⇒ all VMs running on heypervisor must be affetcetd

My question sis :
Is it possible that only one VMs could  experience HA trigger due hardwar or software failure ?
My understanding is if H/w S/w failure happens it affects full ESX box

Please comment on above:

I have a situation

In logs of a VM i see ie vmware.log

Sep 14 16:14:47.004: vmx| Vix: [104333 vmxCommands.c:392]: VMAutomation_Reset
Sep 14 16:14:47.016: vmx| Vix: [104333 vmxCommands.c:457]: VMAutomation_Reset. Trying hard reset
Sep 14 16:14:47.017: vmx|
Sep 14 16:14:47.017: vmx|
Sep 14 16:14:47.017: vmx| VMXRequestReset
Sep 14 16:14:47.018: vmx| Stopping VCPU threads..

According to KB

Determining if a High Availability Virtual Machine Monitoring event caused a virtual machine to reboot
http://kb.vmware.com/kb/1027734

This happens when HA triggers

But, if HA has triggered it should affect all VMs per the definition rt ?

Is it possible that HA have triggered restart of a only one VM on a ESX box ?

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weinstein5
Immortal
Immortal

Is it possible that only one VMs could  experience HA trigger due hardwar or software failure ?

Typically all VMs on a host experiencing SW/HW failure would be affected - the only case a single VM would be affected were in terms of storage for example the VM is the only VM stored on a LUN/Drive that dails - it would only be that VM that fails

Is it possible that HA have triggered restart of a only one VM on a ESX box ?

ONly if per VM monitoring is active - did you check vCenter to seeis an HA event did occur - because what is in the VM log can also be thrown is someone resets the VM

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