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:
- Rest API
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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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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
Continue reading “Fixing ARM deployment errors for Linux disk encryption”
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.
Continue reading “Infrastructure as Code VSTS”
When 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.
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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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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Protect your data at rest with disk encryption on Linux VMs and deploying them as Infrastructure as Code.
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.
Continue reading “Access Azure PAAS without internet access”
Create known configuration in your ARM templates with T-shirt sizes
A good way of keeping on top of the configurations deployed in your Azure environment can be done by using T-shirt size configurations. T-shirt Sizes are known working configurations for your ARM templates. By using a T-shirt Size you can take away the complexity from the ARM template consumers. A sample of a T-shirt Size can be a Small, Medium of Large offering from a resource.
In this blogpost I want to show how you can use T-shirt Size configuration in an ARM template. The idea is to deploy a website where you hide all the size setting behind a Small, Medium of Large sizing. The consumer only has two parameters to start the deployment:
Continue reading “Creating a T-shirt size ARM template”