Added uninstall extension script

Author: Alexander (Sasha) Nosov

samples/manage/azure-arc-enabled-sql-server/uninstall-azure-extension-for-sql-server/uninstall-azure-extension-for-sql-server.ps1

@@ -0,0 +1,126 @@
+#
+# This script provides a scaleable solution to uninstall Azure extension for SQL Server on a specific Arc-enabled server, 
+# all Arc-enabled servers in a specific resource group, specific subscription, a list of subscriptions or the entire account.  
+#
+# You can specfy a single subscription to scan, or provide subscriptions as a .CSV file with the list of IDs. 
+# If not specified, all subscriptions your role has access to are scanned. 
+#
+# The script accepts the following command line parameters:
+# 
+# -SubId [subscription_id] | [csv_file_name]    (Limit scope to specific subscriptions. Accepts a .csv file with the list of subscriptions.
+#                                               If not specified all subscriptions will be scanned)
+# -ResourceGroup [resource_goup]                (Limit scope  to a specific resoure group)
+# -MachineName [machine_name]                   (Limit scope to a specific machine)
+# -All                                          (Uninstall Azure extension on all Arc-enabled servers in all subscriptions you have cointributor access to). 
+# 
+#
+
+param (
+    [Parameter (Mandatory=$false)] 
+    [string] $SubId, 
+    [Parameter (Mandatory= $false)] 
+    [string] $ResourceGroup, 
+    [Parameter (Mandatory= $false)] 
+    [string] $MachineName, 
+    [Parameter (Mandatory= $false)]
+    [boolean] $All=$false
+)
+
+function CheckModule ($m) {
+
+    # This function ensures that the specified module is imported into the session
+    # If module is already imported - do nothing
+
+    if (!(Get-Module | Where-Object {$_.Name -eq $m})) {
+         # If module is not imported, but available on disk then import
+        if (Get-Module -ListAvailable | Where-Object {$_.Name -eq $m}) {
+            Import-Module $m 
+        }
+        else {
+
+            # If module is not imported, not available on disk, but is in online gallery then install and import
+            if (Find-Module -Name $m | Where-Object {$_.Name -eq $m}) {
+                Install-Module -Name $m -Force -Verbose -Scope CurrentUser
+                Import-Module $m
+            }
+            else {
+
+                # If module is not imported, not available and not in online gallery then abort
+                write-host "Module $m not imported, not available and not in online gallery, exiting."
+                EXIT 1
+            }
+        }
+    }
+}
+
+#
+# Suppress warnings
+#
+Update-AzConfig -DisplayBreakingChangeWarning $false
+
+# Load required modules
+$requiredModules = @(
+    "Az.Accounts",
+    "Az.ConnectedMachine",
+    "Az.ResourceGraph"
+)
+$requiredModules | Foreach-Object {CheckModule $_}
+
+# Subscriptions to scan
+
+if ($SubId -like "*.csv") {
+    $subscriptions = Import-Csv $SubId
+}elseif($SubId -ne $null){
+    $subscriptions = [PSCustomObject]@{SubscriptionId = $SubId} | Get-AzSubscription 
+}elseif($All){
+    $subscriptions = Get-AzSubscription
+}else {
+    Write-Host ([Environment]::NewLine + "-- Parameter missing --")   
+    exit 
+}
+
+Write-Host ([Environment]::NewLine + "-- Scanning subscriptions --")
+
+# Scan arc-enabled servers in each subscription 
+
+foreach ($sub in $subscriptions){
+
+    if ($sub.State -ne "Enabled") {continue}
+
+    try {
+        Set-AzContext -SubscriptionId $sub.Id  
+    }catch {
+        write-host "[Environment]::NewLine + Invalid subscription: $($sub.Id)"
+        {continue}
+    }
+   
+    $query = "
+    resources
+    | where type =~ 'microsoft.hybridcompute/machines/extensions'
+    | extend extensionPublisher = tostring(properties.publisher), extensionType = tostring(properties.type), provisioningState = tostring(properties.provisioningState)
+    | where extensionPublisher =~ 'Microsoft.AzureData'
+    | where provisioningState =~ 'Succeeded'
+    | parse id with * '/providers/Microsoft.HybridCompute/machines/' machineName '/extensions/' *
+    | project machineName, extensionName = name, resourceGroup, location, subscriptionId, extensionPublisher, extensionType, properties
+    "
+    
+    if ($MachineName) {$query += "| where machineName =~ '$($MachineName)'"}     
+    if ($ResourceGroup) {$query += "| where resourceGroup =~ '$($ResourceGroup)'"}
+
+    $resources = Search-AzGraph -Query "$($query) | where subscriptionId =~ '$($sub.Id)'"
+    foreach ($r in $resources) {
+
+        
+
+        $setID = @{
+            MachineName = $r.MachineName        
+            ResourceGroup = $r.resourceGroup        
+            Name = $r.extensionName        
+        }
+
+        Remove-AzConnectedMachineExtension @SetId -NoWait # | Out-Null
+        
+    } 
+}
+    
+