Remove locks from Azure resources

Remove locks from azure resources to be able to change or delete them

In my previous blog post Lock Azure resources to prevent accidental deletion, I showed how to add a lock to a resource with an ARM template to protect it from accidental deletion. When you want to delete the resource, you first need to remove the lock. A lock cannot be removed with an ARM template. To remove the lock you can use:

  • Powershell
  • Rest API
  • Portal

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Lock Azure resources to prevent accidental deletion

How a lock can prevent user from accidental deletion of a resource.

In some cases you want to protect critical resources from accidental deletion. Some examples are a storage account with source data for processing, a Key Vault with disk encryption keys, or another key component in your infrastructure. When losing some resources that are key in your infrastructure, recovery can be dramatic. Resource Manager locks will enable you to protect these critical resources from deletion.

Resource Manager locks
Resource Manager locks apply to the management function of the locked resources. The locks do not have any impact the normal functions of the resource. You have two possible types of locks on a resource:

Locking down a resource can save your contributors from accidently delete a critical resources. An ‘oeps… I deleted the wrong resources’ moment should be a thing of the past.

CannotDelete means authorized users can still read and modify a resource, but they can’t delete the resource.
ReadOnly means authorized users can read a resource, but they can’t delete or update the resource. Applying this lock is similar to restricting all authorized users to the permissions granted by the Reader role.
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Fixing ARM deployment errors for Linux disk encryption

When running ARM templates to deploy Linux with disk encryption on Azure I encountered a few errors. The errors where coming when I rerun the same template multiple times. In this post I explain the errors and how I fixed them.

Error: … is not a valid versioned Key Vault Secret URL
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Infrastructure as Code VSTS

Your team is in the process of developing a new application feature, and the infrastructure has to be adapted. The first step is to change a file in your source control system that describes your infrastructure. When the changed definition file is saved in your source control system, it triggers a new build and release. Your new infrastructure is deployed to your test environment, and the whole process to get the new infrastructure deployed took minutes while you only changed a definition file and you did not touch the infrastructure itself.
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VSTS task clean resource group

cleanresourcegroupWhen testing deployment of resources in release pipelines, the resource groups need to be cleaned after you are done testing the deployment of the resources. In many scenarios you do not want or have no rights to remove the resource group it self. For removing the resources in the resource group you can use the VSTS task clean resources. This tasks removes all resources in a resource group.demo

Keep your ARM deployment secrets in the Key Vault

Keep your deployment secret secure in the key vault when using ARM templates to deploy into Azure

When creating new resource in Azure that have secrets like passwords or ssl certificates you can securely save them in the Key Vault and get them from the Key Vault when you deploy. Only the people who need access to the secrets can read and write them to the Key Vault. In a infrastructure as code scenario the secrets are supplied when deploying your templates to Azure. The code it self will be free of secrets.
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Conditional parts in ARM Templates

When creating reusable ARM templates you have a number of options on how to manage conditional parts in your templates. The smallest conditions can be done by parameters, medium differences can be done by  t-shirt sizes and large differences by linked templates. In this blog post I’ll show how to use implement conditions by linked templates.
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Restarting Azure VMs after encrypting the disks

When deploying Azure VMs with disk encryption you have to restart the VM. The disc encrypting part is an async process that finishes after the arm templates are finished. It can take up to and hour before the whole disk is encrypted. To make life easier I made a powershell script that checks the status of the encrypted disks and if the VM needs a restart:
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Deploy a Marketplace Linux VM with disk encryption using ARM templates

Protect your data at rest with disk encryption on Linux VMs and deploying them as Infrastructure as Code.

disk-encryption-vm-on-azure
VM with disk encryption

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Access Azure PAAS without internet access

Gerenate ARM NSG rules to allow access to an Azure Datacenter

In some Azure environments the organization limits the outbound internet traffic from their servers. There are scenarios where you need to access Azure PAAS services (blob storage, or Azure SQL database etc.). You have to block the access to the internet and enable access to the Azure IP ranges Microsoft reserved for a specific Azure datacenter. To be able to access the service I made a script that will generate the Network Security Groep Rules in ARM format to give access to Azure services.
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