As the other's have pointed ... the script I wrote would work but unfortunately FT (Fault Tolerance) is a feature that comes with vCenter and you will not be able to disable/enable/turn off FT without vCenter.

Having said that, can you turn off the VM that currently has FT enabled? If you can, which might end up being your only option ... you can edit the .vmx entry to remove any entries regarding FT. I would highly recommend making a backup of your configs before doing so.

From what I've gathered there is an FT uuid in the .vmx such as this:

uuid.ft = "50 12 1d b9 57 f2 42 86-79 27 51 f7 14 90 50 fc"

and with the VM directory there is a VM FT configuration file called shared.vmft specifying the secondary and it's location/etc. that looks something like:

/vmfs/volumes/4ab39fe8-706cd754-2292-0050568d51a5/test # cat shared.vmft

.encoding = "UTF-8"
generation = "1"
primary.uuid = "52 85 35 7b 49 41 7b 28-9b 50 bb 7b 8c 90 4d 71"
primary.vmxFilePath = "/vmfs/volumes/4ab39fe8-706cd754-2292-0050568d51a5/test/test.vmx"
secondary.secondary0.enabled = "1"
secondary.secondary0.uuid = "50 12 1d b9 57 f2 42 86-79 27 51 f7 14 90 50 fc"
secondary.secondary0.valid = "1"
secondary.secondary0.vmxFilePath = "/vmfs/volumes/4ab39fe8-706cd754-2292-0050568d51a5/test/test_1.vmx"
uuid = "50 12 1d b9 57 f2 42 86-79 27 51 f7 14 90 50 fc"

You probably need to move this file and update the .vmx and see if you can re-gain control of the VM to add your host back into the cluster.

It also might be worthwhile to file a ticket with VMware support to see if there is a way of disabling FT w/o vCenter.

Good luck

=========================================================================
William Lam
VMware vExpert 2009
VMware ESX/ESXi scripts and resources at: http://engineering.ucsb.edu/~duonglt/vmware/
vGhetto Script Repository
VMware Code Central - Scripts/Sample code for Developers and Administrators
VMware Developer Comuunity
Twitter: @lamw



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