Walk all AKS clusters in a single Azure subscription and disable auto-upgrade. This is to support adding clusters to an auto-upgrade in Fleet Manager. GitHub Copilot generated.

disable-aks-autoupgrade-single-sub.sh

#!/bin/bash

# Set this to true if you want to actually perform the update
# Set to false for a dry run that just lists the clusters that would be updated
PERFORM_UPDATE=false

echo "Listing all AKS clusters in the subscription..."

# Get all AKS clusters in the subscription
clusters=$(az aks list --query "[].{name:name, resourceGroup:resourceGroup, autoUpgradeChannel:autoUpgradeChannel}" -o json)

# Count the total clusters
total_clusters=$(echo $clusters | jq '. | length')
echo "Found $total_clusters AKS clusters"

# Loop through all clusters
echo $clusters | jq -c '.[]' | while read -r cluster; do
    name=$(echo $cluster | jq -r '.name')
    resourceGroup=$(echo $cluster | jq -r '.resourceGroup')
    autoUpgradeChannel=$(echo $cluster | jq -r '.autoUpgradeChannel')
    
    echo "Cluster: $name in resource group: $resourceGroup"
    echo "  Current auto-upgrade channel: $autoUpgradeChannel"
    
    # Only update if the auto-upgrade channel is not 'none'
    if [ "$autoUpgradeChannel" != "none" ]; then
        echo "  This cluster has auto-upgrade enabled."
        
        if [ "$PERFORM_UPDATE" = true ]; then
            echo "  Disabling auto-upgrade..."
            az aks update --resource-group "$resourceGroup" --name "$name" --auto-upgrade-channel none
            
            # Verify the update
            updated_channel=$(az aks show --resource-group "$resourceGroup" --name "$name" --query "autoUpgradeChannel" -o tsv)
            echo "  Auto-upgrade channel has been set to: $updated_channel"
        else
            echo "  [DRY RUN] Would disable auto-upgrade on this cluster."
        fi
    else
        echo "  Auto-upgrade is already disabled on this cluster."
    fi
    echo "-----------------------------------"
done