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Automate Resources In Azure Using ARM Templates

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Automate Resources In Azure Using ARM Templates

Infrastructure as Code (IaC) is a method of running IT infrastructure that automates, configures, and manages systems and networks using scripts or code. It can work with a variety of file formats, including JSON and YAML. YAML (YAML Ain’t Markup Language) is a data serialization format that is commonly used in Ansible, Kubernetes, and other tools. While JSON (JavaScript Object Notation) is a popular data interchange format that is frequently used in AWS CloudFormation, Terraform, and other tools. Both YAML and JSON are simple to understand and can be used in a variety of IaC tools.

Azure Resource Manager (ARM) templates is a service provided by Microsoft Azure that allows you to provision, manage, and delete Azure resources using declarative syntax. These templates can be used to deploy and manage resources such as virtual machines, storage accounts, and virtual networks in a consistent and reliable manner. To deploy the template, you can use the Azure Portal, Azure CLI, or Azure PowerShell.

In this article, we’ll use the Azure Portal to create, deploy and export resources using ARM templates:

Deploying ARM templates

  1. The first thing you need to do is to search for the service “Deploy a custom template”. After selecting the service, you’ll see the options:

  • Build your own template in the editor

  • Common templates

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  • Start with a quickstart template or template spec

Automate Resources in Azure using ARM templates

2. Begin with a quickstart template, then type “docker-simple-on-ubuntu” and press Next. Add the required parameters, such as resource group, username, DNS, and password, then click Create.

3. You can also modify the template based on your requirements before creating the resources.

Automate Resources in Azure using ARM templates

4. Once the deployment is successful, you can go to the selected resource group, and you’ll see the created resources from the ARM template.

Automate Resources in Azure using ARM templates

5. When the Azure resources are no longer needed, you can clean up the resources by deleting the resource group.

Exporting Template

If you want to save the current state of the resource group, scroll down to the Automation section and click Export template, then click the download button.

Automate Resources in Azure using ARM templates

Before re-using the template for production deployments, you may want to revise it since the template we used is a quickstart template.

Creating ARM templates

1. Now that you’ve learned how to deploy using a quickstart template, let’s now try creating an ARM template from scratch. Go back to the “Deploy a custom template” page and click Build your own template in the editor.

Automate Resources in Azure using ARM templates

2. Once you are redirected to the editor page, you’ll see that there are no parameters, variables, and resources. In this section, we’ll create and deploy an Azure web app template.

3. Click Add resource, select Web app, fill up the remaining fields and press OK.

Automate Resources in Azure using ARM templates

4. In the editor page, you’ll notice that a JSON has been created. Feel free to change any of the parameters based on your requirements.

Automate Resources in Azure using ARM templates

5. If you want to save the template you’ve created, just click the Download button. Now let’s save the template, and you’ll be redirected to the configuration of the resource. Just fill up the required fields and click Create.

Automate Resources in Azure using ARM templates

6. After the deployment is completed, you can go to the resource group and select the web app you’ve created. To confirm if the web app is running, you can access the URL generated by the App Service. The format is: https://<web-app-name>.azurewebsites.net/

Automate Resources in Azure using ARM templates

7. That’s how simple it is to create and deploy a custom ARM template for your own project. Again, if you no longer need the resource, don’t forget to delete the resource group to avoid unexpected billing in your account.

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Written by: Gerome Pagatpatan

Gerome is a Software Engineer with 5 cloud certifications from Amazon Web Services, Microsoft Azure, and Oracle. He co-authored high-quality educational materials in the cloud computing space, which have been used by over a quarter-million people worldwide. He is also part of the AWS Community Builders program, which aims to help fellow IT professionals advance their careers in the cloud. He is passionate about education, and now it's his turn to share his knowledge, experiences, and passion for cloud computing.

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