Sunday, December 26, 2021

Azure DevOps Terraform Integration | How do you integrate Terraform with Azure DevOps | Automate Infrastructure setup using Terraform and Azure DevOps | Remote Store in S3 Bucket

We will be learning an interesting use case to provision resources in AWS cloud using Terraform and Azure DevOps. We will also learn how to store terraform state info remotely in AWS S3 bucket.

We will create S3 bucket for storing terraform state info and Dynamo DB table for providing state lock capability. 

We will try to create an EC2 instance and S3 Bucket using Terraform and Azure DevOps in AWS cloud. Look at the diagram that describes the whole flow. 

Watch the steps in YouTube channel:
    • Azure DevOps organization
    • Add Azure pipelines Terraform tasks 
    • Create AWS service connection in Azure DevOps for Terraform to use
    • Create service connection for connecting to GitHub
    • Create S3 bucket for storing TF state
    • Create dynamo DB table for providing lock capability
    • I have provided my public repo as an example which you can use.

    Step # 1 - Create S3 Bucket:
    Login to AWS, S3. Click on create S3 bucket.

    Give unique name to the bucket, name needs to be unique.

    Block all public access, enable bucket versioning as well.

    Enable encryption.

    Step # 2 - Create DynamoDB Table
    Create a new table with LockID as partition Key

    Step # 3 - Create Service connection to connect to AWS from Azure DevOps
    Go to Azure Devops, select your project. Project Settings

    Click Service Connections

    Select AWS for Terraform
    Enter Access Key, Secret Key and region code, enter name for service connection and choose Grant Access to all pipelines.

    Click Save.

    Create Service connection for connecting to GitHub


    Step 4 - Create a new Release Pipeline
    Click on Releases, New, choose New Release pipeline

    Select empty job. 

    Click on Add Artifacts

    Choose GitHub, select Github service connection, select the repo

    Click on Add tasks, type terraform
    choose the task

    Add task, search for install terraform and select installer task

    It should show something like this:
    Add another terraform task for init

    Search for terraform and add task

    select AWS from drop down, choose init as command and add -reconfigure as additional command arguments. Select AWS service connection and enter bucket name

    Add another task for plan, select right values.
    enter -out dev-plan 

    Add another task by cloning for apply.
    enter "dev-plan" as additional arguments

    Click on Save. 
    Create Release, now job should be running.

    Login to AWS--> S3 Bucket, you should see terraform state info 

    How to destroy all the resources created using Terraform?

    Clone the current infra setup release pipeline.

    Modify the pipeline name.

    Modify the apply task to as shown in the diagram
    enter -destroy as additional argument.

    Click on Create Release to make sure all the resources are destroyed.


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