Published 24 days ago I know this is a rudimentary question, but there seems to be a gap on most write-ups on this topic that assumes the reader is some sort of bash\terraform expert already, which is not my case. Step 1 — Remote State with Storage Account . Terraform needs an Azure AD service principal that is created using the following bash/Azure CLI commands: The service principal is used for Terraform to authenticate against your Azure environment. Is Hns Enabled bool Account HierarchicalNamespace enabled if sets to true. Lots of administrators and operators I have talked with so far have complained about the difficult JSON syntax ARM templates come with. At the same time it will save your Azure environment’s state in a local .tfstate-file by default. Every time I start a new terminal, the storage account key is read from the Azure Key Vault and then exported into the bash session. This article describes the initial config of an Azure storage account as Terraform remote backend. I am using a MacBook but on a Windows machine you will have to conduct similar steps. Hi network geek and thank you for your feedback. Of course, we do not want to have passwords stored locally on any DevOps engineer’s device so we need to put some more effort in it. This is not just a technical problem, it is also a process question you need to answer. Do the same for storage_account_name, container_name and access_key.. For the Key value this will be the name of the terraform state file. with azure cli). Do you want to destroy it just to rebuild the environment? When you store the Terraform state file in an Azure Storage Account, you get the benefits of RBAC (role-based accesscontrol) and data encryption. There are multiple benefits to using a Remote backend: Now your terraform state file is centrally managed and all the team members can access it and make changes to it. Terraform codifies infrastructure into configuration files, which define usage of cloud resources such as virtual machines (VMs) and storage accounts. Valid option is LRS currently as per Azure Stack Storage Differences. In order to access a secret from an Azure Key Vault within your deployment template you simply need to add a data source in the template file: In the VM deployment part of the template file you can then reference this secret like this: You see, it’s really much easier than working with ARM templates. Configuring the Remote Backend to use Azure Storage with Terraform. Terraform is an open-source toolkit for infrastructure-as-code deployments. TL;DR – Terraform is blocked by Storage Account firewall (if enabled) when deploying File Share. account_encryption_source - (Optional) The For this example I am going to use tst.tfstate. Change ). terraform { backend "azurerm" { resource_group_name = "tstate-mobilelabs" storage_account_name = "tstatemobilelabs" container_name = "tstatemobilelabs" key = "terraform.tfstate" } } We have confiured terraform should use azure storage as backend with the newly created storage account. So, first thing we need to do is to prepare our local computer for using terraform. you can even remove (destroy) destroy whole deployments. “password”: “yourServicePrincipalPassword”, export ARM_TENANT_ID=yourAzureADtenantID, # Not needed for public, required for usgovernment, german, china As a solution, terraform provides locking to prevent concurrent runs against the same state. the ability to destroy former resource deployments. Apply a Delet e Lock t o t he st orage account – Only accounts with “Owner” role access will be able to remove the lock and delete; the state file blob. Version 2.37.0. View all posts by Tom Janetscheck. You need a main template which is used to access the KeyVault secret and then pass it as parameter to the linked template in which your infrastructure is deployed. container_name: The name of the blob container. Azure Storage offers all of these via it’s Containers which allows for the creation of items as BLOBs in an encrypted state with strict access controls with optional soft deletion. az ad sp create-for-rbac –role=”Contributor” –scopes=”/subscriptions/$ARM_SUBSCRIPTION_ID”. Terraform generates key names that include the values of the bucket and key variables. I want to create a VM and put its VHD into an encrypted storage account. Imagine you have an existing deployment and want to change only parts of it. ( Log Out /  We can also use Terraform to create the storage account in Azure Storage.. We create a file called az-remote-backend-variables.tf and add this code: # company variable "company" {type = string description = "This variable defines the name of the company"} # environment variable "environment" {type = string … ( Log Out /  Published 17 days ago. Since I’m always looking for security in automation I decided to start a blog series in which I explain how to configure and use Terraform to get the best out of it. Terraform uses the “local” backend as a normal behavior but state file can be stored remotely too. Using Shared Libraries in a Jenkins Pipeline, Fun Projects to Help You Improve Your Coding Skills During the COVID-19 Quarantine Period, Building a Career in Software Development Without a Computer Science Degree. A “backend” in Terraform determines the handling of the state and the way certain operations are executed, enabling many essential features. “tenant”: “yourAzureADTenantID” Because your data is secured by default, you don't need to modify your code or applications to take adv… Valid options are Hot and Cold, defaults to Hot. To review, when you deploy Terraform it creates the state file to that maintains your environments’ configuration. Version 2.38.0. Adds the Azure Storage Account key as a pipeline variable so that we can use it in the next task; If the Resource Group, Azure Storage Account and container already exist then we still need the Azure Storage Account key so this task needs to be executed during each pipeline run as the following task needs to interact with the Azure Storage account: If your organization uses a hybrid setup the Terraform is one of the best choices for Infrastructure as a code. In your Windows subsystem for Linux window or a bash prompt from within VS … Azure Storage supports encryption at rest either with a Microsoft managed key or your own key. In my next article I will show how to deploy an entire Azure environment using Terraform. terraform import azurerm_storage_encryption_scope.example /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/group1/providers/Microsoft.Storage/storageAccounts/account1/encryptionScopes/scope1 So it’s getting quite easy to get rid of old, no longer needed, resources. The disadvantage here is that passwords you use in your deployment are saved in this .tfstate-file, too. }. Published 10 days ago. Some time ago, I have published a blog post about how to securely deploy an Azure VM using PowerShell. In today’s multi cloud environment, it is beneficial to use automation patterns you can repeat across multiple environments. key: The name of the state store file to be created. Remote state storage Store your Terraform state file securely with encryption at rest. Alternatively, you can configure a Terraform provider to define access to your Azure subscription. Sorry, your blog cannot share posts by email. When I close my bash, the key is removed from memory. The Terraform top level keyword is resource. These 5 points do an excellent job when dealing with the bad internal actor vector: - No one has direct access to the storage account. A single DynamoDB table can be used to lock multiple remote state files. Run the following command: I have created an Azure Key Vault secret with the storage account key as the secret’s value and then added the following line to my .bash_profile file: When you remove resource information from your template files, Terraform will remove the respective Azure resources as soon as you apply the new config. create - (Defaults to 30 minutes) Used when creating the Storage Account Customer Managed Keys. Cloud Security Enthusiast | Security Advocate. 1.4. Now we have an instance of Azure Blob Storage being available somewhere in the cloud; Different authentication mechanisms can … Happy reading. Azure Storage encryption is enabled for all storage accounts, including both Resource Manager and classic storage accounts. “appId”: “yourServicePrincipalID”, The beauty is that it comes with some advantages over ARM templates: you can let terraform perform a difference check between what you already have and what your new configuration will do in your Azure subscription. In Terraform it’s only this: You can add more information such as tags, however, the code above is all you need. But if 2 changes are being made in parallel then that can corrupt the state file. » azure_storage_container Track infrastructure changes over time, and restrict access to certain teams within your organization. Configuring the Remote Backend to use Azure Storage with Terraform. Even in the above scenario, how do you provision the user who runs terraform at that point? Well, almost. Locking helps make sure that only one team member runs terraform configuration. So our ultimate design should look like: export ARM_CLIENT_SECRET=yourServicePrincipalPassword DynamoDB supports state locking and consistency checking. echo “Setting environment variables for Terraform” From there, you call Terraform which will recognise those variables and use their values for logging in to your Azure environment. You can find my example templates in my Azure Security Github repository. A workaround is to use a null_resource to enable these settings (e.g. However, S3 doesn’t support the state locking functionality and this can be achieved by using DynamoDB. It introduced sensitive variables that enables you to keep these outputs clean. We can enable versioning by going to azure portal -> azure storage account -> blob service -> data protection -> select check box for ‘turn on versioning’: Identity Identity The identity of the resource. storage_account_name: The name of the Azure Storage account. The provider section within a template file tells Terraform to use an Azure provider: As I’ve mentioned above, Terraform stores environmental information including passwords that is needed in a deployment in the .tfstate-file. With the command. Using the S3 backend resource in the configuration file, the state file can be saved in AWS S3. Azure Storage Accounts are also encrypted at rest by default, which is a big plus. Thanks! Each of these values can be specified in the Terraform configuration file or on the command line. the ability to change existing deployments. Only CI - Any non-CI access to the storage account is monitored and needs preapproval. Ideally, the person running the ‘terraform plan’ and ‘terraform apply’ commands wouldn’t need and rights within Azure. We recommend using the Azure Resource Manager based Microsoft Azure Provider if possible. - Currently Not Supported on Azure Stack. ; read - (Defaults to 5 minutes) Used when retrieving the Storage Account Customer Managed Keys. Version 2.36.0. The storage account name forms part of the FQDN, and needs to be globally unique; Save the file (CTRL+S) The round dot on the file name tab denotes unsaved changes; Let’s look more closely at the second resource block (or stanza) for the storage account. Snapshot s of st at e file dat a – Routine snapshotting of the state file protects against accidental file deletion. if you have recently attended one of my talks or workshops you know that in my opinion, DevOps, infrastructure as code, and automated deployments are essential for security in cloud environments. 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