How to turn on Fault Tolerance for VM in Automation

[Cashi]

Hi,

how can i turn on fault tolerance for a vm in automation?

Thanks, Daniel

[WhiteForEver]

By "automation" you mean using Orchestrator?

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[Cashi]

Thats not really important for me, its good in orchestrator as good as directly at provisioning. But as i see, its only possible with powershell... (!?)

[WhiteForEver]

Nope. Can be done with Javascript as well. I can take a look if I have a code somewhere. I think I did something similar a few years ago.

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[WhiteForEver]

Ok. I think I have a raw working code. I will prepare it and publish the link later, so you can use it.

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[Cashi]

Would be very helpfull, thanks!

[WhiteForEver]

Hi @Cashi,

Please: https://clouddepth.com/how-to-enable-fault-tolerance-with-orchestrator-the-apollo-13-way/

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[mayank_goyal]

/* Inputs
host : VC:HostSystem
vm : VC:VirtualMachine
turnOn : boolean
*/
System.log("VM's fault tolerance info:" + vm.config.ftInfo);
if ( vm.config.ftInfo != null ) {
	if ( vm.config.ftInfo.role == 1 ) {
		System.log("VM's fault tolerance secondary VM: " + vm.config.ftInfo.secondaries[0]);
		task = vm.enableSecondaryVM_Task(vm.config.ftInfo.secondaries[0], host);
	} else {
		throw "The VM: " + vm.name + " is not a primary VM!";
	}
} else if (turnOn){
	task = vm.createSecondaryVM_Task(host);
} else {
	throw "Fault tolerance is not switched on!";
}
actionResult = System.getModule("com.vmware.library.vc.basic").vim3WaitTaskEnd(task,true,3) ;

[WhiteForEver]

Hi Mayank,

for some reason I am getting that error: `Error in (Dynamic Script Module name : vim3WaitTaskEnd#21) Task 'createSecondary' error: The requested operation is not implemented by the server.`  I didn't use this `ftInfo` method before, but it is looks like its missing something.

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[mayank_goyal]

I will look into it. Thanks.

[Mayank Goyal]

Use PowerCLI Runtime and pick a PowerShell Script to turn on FT on VM. http://vniklas.djungeln.se/2012/02/25/vmware-vsphere-ft-fault-tolerance-function-for-powercli/

You can add a subscription to vRA as well, just like what I did here for enabling vTPM. https://cloudblogger.co.in/2025/03/17/enabling-vtpm-in-vsphere-vms-using-orchestrator/