Schedule VM Start using ACR Tasks

acr-vm-scheduled-startup.sh

#!/bin/bash

# Variables
acrName=
resourceGroup=
vmName=

# Create ACR task with encoded YAML
az acr task create \
    --name startvm \
    --registry $acrName \
    --schedule "dailyTimer:0 12 * * Mon-Fri" \
    --assign-identity '[system]' \
    --context /dev/null \
    --file - <<EOF
version: v1.0.0
steps:
  - id: login
    cmd: az login --identity
  - id: start-vm
    cmd: az vm start --resource-group $resourceGroup --name $vmName
EOF

# Assign managed identity to the task
taskIdentity=$(az acr task identity show --name startvm --registry $acrName --query principalId --output tsv)

subscription=$(az account show  --query id -o tsv)

echo Role assigning  $taskIdentity to vm

# Assign a role to the VM using the task's managed identity
az role assignment create --assignee $taskIdentity --role Contributor --scope /subscriptions/$subscription/resourceGroups/$resourceGroup/providers/Microsoft.Compute/virtualMachines/$vmName

echo "ACR task created and VM role assigned!"