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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 ?
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
