How to deploy Arc Extension Microsoft.Azure.Automation.HybridWorker via REST API

Question

Hi, I am trying to deploy an Microsoft.Azure.Automation.HybridWorker via powershell and REST API but it fails with the following error:

{"Message":"Specified machineId is not associated with automation account.

This is the method I am used:

$PutHybridRunbookWorkerUri = "https://management.azure.com/subscriptions/$($SubscriptionId)/resourceGroups/$($resourceGroupName)/providers/Microsoft.HybridCompute/machines/$($machineName)/extensions/HybridWorkerExtension?api-version=2021-05-20"
$RequestBodyHybridRunbookWorker = @{
"location" = $($location)
"properties" = @{
"publisher" = "Microsoft.Azure.Automation.HybridWorker"
"type" = "HybridWorkerForWindows"
"typeHandlerVersion" = "0.1.0.18"
"autoUpgradeMinorVersion" = $false
"enableAutomaticUpgrade" = $false
"settings" = @{
"AutomationAccountURL" = $AutomationAccountUrl
}
"protectedSettings" = @{
"primaryaccesskey" = $AutomationAccountKey
}
}
} | ConvertTo-Json -depth 3
Invoke-RestMethod -Headers @{Authorization = "Bearer $token" } -Body $RequestBodyHybridRunbookWorker -Uri $PutHybridRunbookWorkerUri -Method put -ContentType "application/json"

Any ideas?

Kind regards,

Peter Smit

Answer 1

<<Sharing the solution for the benefit of other community members who might be looking for an answer to similar issue>>

Steps involved to deploy Arc extension HRW (hybrid runbook worker) are:

1. To create HRW group
2. To confirm HRW group creation
3. To generate a GUID and create HRW URI
4. To confirm HRW creation make a get call
5. To retrieve Automation Account Hybrid Service URL
6. To create the extension

Script:

$subscriptionId = "" #Automation Account sub id  
$automationAccountName = "" #Automation account name  
$resourceGroupName = "" #Automation Account RG  
$token = (get-azaccesstoken).Token  
$hybridRunbookWorkerGroupName = "" # HRWG group to be created  
$ARCSubscriptionId = "" #ARC machine sub id  
$ARCresourceGroupName = "" #ARC machine RG  
$ARCmachineName = "" #ARC machine name  
$ARCMachinelocation = "" # ARC Machine location  
$ARCServerResourceId = "/subscriptions/$ARCSubscriptionId/resourceGroups/$ARCresourceGroupName/providers/Microsoft.HybridCompute/machines/$ARCmachineName"  
  
#Update all the above varialbles before using the below script  
  
#Create HRW Group URI  
$headers = @{Authorization = "Bearer $token"}  
$createHRWGroupuri = "https://management.azure.com/subscriptions/$subscriptionId/resourceGroups/$resourceGroupName/providers/Microsoft.Automation/automationAccounts/$automationAccountName/hybridRunbookWorkerGroups/$($hybridRunbookWorkerGroupName)?api-version=2021-06-22"  
$contentType = "application/json"      
$body = @{} | ConvertTo-Json  
$response = Invoke-WebRequest -Uri $createHRWGroupuri -Method PUT -Headers $headers -Body $body -ContentType $contentType  
$response.Content  
  
#To Confirm HRW Group Creation  
(Invoke-WebRequest -Uri $createHRWGroupuri -Method Get -Headers $headers).Content  
  
#Generate HRW id  
$hrwId = New-Guid  
  
#Create HRW URI  
$createHRWuri = "https://management.azure.com/subscriptions/$subscriptionId/resourceGroups/$resourceGroupName/providers/Microsoft.Automation/automationAccounts/$automationAccountName/hybridRunbookWorkerGroups/$hybridRunbookWorkerGroupName/hybridRunbookWorkers/$($hrwId)?api-version=2021-06-22"  
  
$body = @"  
{  
"properties":{"vmResourceId": "$ARCServerResourceId"}  
}  
"@  
  
$response = Invoke-WebRequest -Uri $createHRWuri -Method PUT -Headers $headers -Body $body -ContentType $contentType  
$response.Content  
  
#To Confirm HRW Creation make a get  
(Invoke-WebRequest -Uri $createHRWuri -Method Get -Headers $headers).Content   
  
##### HRW is not Visible yet in the portal#####  
#Retrieve Automation Account Hybrid URL  
$automationAccountInfouri = "https://management.azure.com/subscriptions/$subscriptionId/resourceGroups/$resourceGroupName/providers/Microsoft.Automation/automationAccounts/$($automationAccountName)?api-version=2021-06-22"  
$automationHybridServiceUrl = ((Invoke-WebRequest -Uri $automationAccountInfouri -Method Get -Headers $headers).Content) | ConvertFrom-Json | Select -expand properties | Select -expand automationHybridServiceUrl  
$automationHybridServiceUrl  
  
$CreateARCExtensionUri = "https://management.azure.com/subscriptions/$ARCSubscriptionId/resourceGroups/$ARCresourceGroupName/providers/Microsoft.HybridCompute/machines/$ARCmachineName/extensions/HybridWorkerExtension?api-version=2021-05-20"  
$CreateARCExtensionBody = @{  
    'location'   = $($ARCMachinelocation)  
    'properties' = @{  
        'publisher'               = 'Microsoft.Azure.Automation.HybridWorker'  
        'type'                    = 'HybridWorkerForWindows'  
        'typeHandlerVersion'      = '0.1.0.18'  
        'autoUpgradeMinorVersion' = $false  
        'enableAutomaticUpgrade'  = $false  
        'settings'                = @{  
            'AutomationAccountURL' = $automationHybridServiceUrl  
        }  
    }  
} | ConvertTo-Json -depth 2  
  
#Create the Extension  
Invoke-WebRequest  -Uri $CreateARCExtensionUri -Method PUT -Headers $headers -Body $CreateARCExtensionBody -ContentType $contentType  

Illustration: