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Azure Functions Python and Terraform

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📝 Overview

This is my pet project using Terraform and python with Azure Functions. I want to try out new technologies and tools that I don't use on a daily basis in my job.

👩‍💻 Technologies

As you may read in the title of this project uses mainly two things: Azure Functions to host Python functions and Terraform as an IaC (Infrastructure as a Code) tool.

🚀 CI/CD

CI/CD is based on the Azure Pipelines. You can find pipeline definitions in the azure-pipelines folder in this repo. That folder contains:

  • PR check pipeline - for PR validation purposes. Azure DevOps view can be found here: PR check pipeline link;
  • deployment pipeline - for CD of this project to the Azure environment. Azure DevOps view can be found here: CD pipeline link

Also CD pipeline uses Azure Pipeline Environments to report status of deployment: DevEnv deployment view in Azure DevOps Pipelines

⚙ Project Setup

If you want to setup the project on your own computer and try to play with it locally, you need to do a couple of things:

  1. Clone this repo to your machine.
  2. Install terraform and az cli on your machine.
  3. Run az login command and login to your Azure account.
  4. Create a Azure Storage Account for Terraform state using tfstate_storage_setup.sh script.
  5. Set the ARM_ACCESS_KEY environment variable to the storage access key that you got from script output from the previous point of this guide.
  6. Change a name of the storage in the main.tf file in the 9th line from tfstate6671 to a name that you got from script output from the 3rd point of this guide.
  7. Go to a src/infrastructure folder, eg. cd src/infrastructure.
  8. Run a couple of Terraform commands:
terraform init
terraform plan # This will output the changes on the Azure env that terraform will make
terrafrom apply -auto-approve

Now you have prepared the Azure environment to start hacking.

Next thing is to publish Azure Functions to Azure Function App that was created. For this I highly recommend using VS Code with Azure functions extension as this is the easiest approach. You can stick to this Microsoft Tutorial: Create and deploy serverless Azure Functions in Python with Visual Studio Code.