Invoke-AzureRmVMRunCommand not returning anything in "Output" field when executing from Runbook

Question

I'm trying to invoke a powershell script on to a Virtual Machine and retrieve the output of the script. I'm using the Invoke-AzureRmVMRunCommand cmdlet to invoke the script on the VM as shown below.

$ValidationResult = Invoke-AzureRmVMRunCommand -ResourceGroupName $VM.ResourceGroupName -VMName $VM.Name -CommandId "RunPowerShellScript" -ScriptPath $ValidationScript

When I execute the above cmdlet from a regular powershell terminal, I get the output as expected. However, whenever I'm putting this statement inside an automation runbook, I get null in almost all the fields as shown below

I don't see anything specific to this in documentation as well. Am I doing something wrong here?

Any help would be greatly appreciated! Thank you.

Update: In the script, I'm logging the output using Write-Output cmdlet.

Dave Anders · Answer 1 · 2018-04-12T10:19:43.640

1

You need to either add the object name on last line of your script or use the Write-Output command. Otherwise it will not output anything.

The following lines both write an object to the output stream.

Write-Output –InputObject $ValidationResult
$ValidationResult

https://learn.microsoft.com/en-us/azure/automation/automation-runbook-output-and-messages

Hope this helps

edited Apr 12 '18 at 10:19

answered Apr 12 '18 at 10:18

Dave Anders

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I have this already in the script. Thanks for pointing it out though. Let me clarify my question. – Amogh Natu Apr 12 '18 at 10:19
Please post the script entirely, not the command line, but Runbook script – Dave Anders Apr 12 '18 at 10:20
Unfortunately, I would not be able to post the runbook here but let me know if you need any more information. – Amogh Natu Apr 12 '18 at 10:24
I need to see the last line of it – Dave Anders Apr 12 '18 at 10:27
Write-Output $log – Amogh Natu Apr 12 '18 at 10:41
This is the last line in the script that I'm running on the VM – Amogh Natu Apr 12 '18 at 10:41
Then its not $ValidationResult, so dont expect it to give same result as the line you have provided intially :). How do you compose the $log variable, what does it contain when you run the runbook from, lets say, Powershell console? – Dave Anders Apr 12 '18 at 10:43
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/168814/discussion-between-amogh-natu-and-mareks-zirdzins). – Amogh Natu Apr 12 '18 at 10:45
Sure, although +1 to my answer also would be appreciated. ;) – Dave Anders Apr 12 '18 at 10:57
I'm having (almost) exactly the same issue. Invoke-AzureRmVMRunCommand used to print the output but nothing anymore, just returns empty. And I'm just running the command on Powershell straight, not runbook. – mco Apr 18 '18 at 12:15

score 0 · Answer 2 · answered Apr 24 '18 at 20:19

0

This issue is most likely due to a reported bug in the AzureRM modules starting with version 5.7.0 / April 2018. Rolling back to version 5.6.0 / March 2018 is reported to fix it. Issue log: https://github.com/Azure/azure-powershell/issues/5982

answered Apr 24 '18 at 20:19

Brian Reynolds

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score 0 · Accepted Answer · answered Apr 26 '18 at 18:40

My Apologies for the delayed response. I was using this in a runbook of type Powershell Workflow. Many of the PowerShell cmdlets behave differently when executed in workflows.

So in this case, what was happening is the Invoke-AzureRmVMRunCommand was executing correctly but the response was only the TYPE of the response and not the actual response object. Hence I was unable to see any values in the response's properties.

In order to make this work, I had to wrap the cmdlet call within an InlineScript {} block.

$ValidationResult = InlineScript {
    $result = Invoke-AzureRmVMRunCommand -ResourceGroupName $USING:VM.ResourceGroupName -VMName $USING:VM.Name -CommandId "RunPowerShellScript" -ScriptPath $USING:ValidationScript

    $result.SubStatuses[0].Message
}

The result is returned to $ValidationResult variable.

More detailed post is given here: https://amoghnatu.net/2018/04/15/get-output-of-script-executed-as-part-of-set-azurermvmcustomscriptexecution-cmdlet/

Thanks.

Invoke-AzureRmVMRunCommand not returning anything in "Output" field when executing from Runbook

3 Answers3