Azure Search set ReplicaCount by Automation graphical runbook - powershell

Question

Azure Search does not give any scheduled scaling option so I try to make it by Automation account.
I followed AzSearch PowerShell command, but it does not work as I expected.
Set-AzureRmResource with ReplicaCount=2 parameter is not applied. Actually, it does not give any result message. What did I miss?
To reproduce my problem, you can import my runbook file at below link;
https://gist.github.com/YoungjaeKim/5cb66a666a3a864b7379aac0a400da40
Save the text file as AzureSearch-SetReplicaCount.graphrunbook and Import it to Automation account > Add a runbook menu.

Answer 1

Following commenters, I ended up by making PowerShell runbook.
I uploaded powershell source code to below link;
https://gallery.technet.microsoft.com/scriptcenter/Azure-Search-change-c0b49c4c
Let me attach the code as below;
<#
.DESCRIPTION
Scale Azure Search ReplicaCount
AzSearch command reference; https://learn.microsoft.com/en-us/azure/search/search-manage-powershell
.NOTES
AUTHOR: Youngjae Kim
LASTEDIT: June 19, 2017
#>
Param(
[string]$SubscriptionId,
[string]$ResourceGroupName,
[string]$AzSearchResourceName,
[int]$InstanceCount = 1
)
# 1. Acquire Automation account
$connectionName = "AzureRunAsConnection"
try
{
# Get the connection "AzureRunAsConnection "
$servicePrincipalConnection=Get-AutomationConnection -Name $connectionName
"Logging in to Azure..."
Add-AzureRmAccount `
-ServicePrincipal `
-TenantId $servicePrincipalConnection.TenantId `
-ApplicationId $servicePrincipalConnection.ApplicationId `
-CertificateThumbprint $servicePrincipalConnection.CertificateThumbprint
}
catch {
if (!$servicePrincipalConnection)
{
$ErrorMessage = "Connection $connectionName not found. You must have Automation account. Reference: https://learn.microsoft.com/en-us/azure/automation/automation-role-based-access-control"
throw $ErrorMessage
} else{
Write-Error -Message $_.Exception
throw $_.Exception
}
}
# 2. Select subscription
Select-AzureRmSubscription -SubscriptionId $SubscriptionId
# 3. Specify Azure Search Resource
$resource = Get-AzureRmResource `
-ResourceType "Microsoft.Search/searchServices" `
-ResourceGroupName $ResourceGroupName `
-ResourceName $AzSearchResourceName `
-ApiVersion 2015-08-19
Write-Output ($resource)
# 4. Scale your service up
# Note that this will only work if you made a non "free" service
# This command will not return until the operation is finished
Write-Output ("Updating InstanceCount to " + $InstanceCount + ". This can take 15 minutes or more...")
$resource.Properties.ReplicaCount = $InstanceCount
$resource | Set-AzureRmResource -Force -Confirm:$false
# 5. Finish
Write-Output ("End of Process to set InstanceCount = " + $InstanceCount + " for " + $AzSearchResourceName)