ARM.md

Azure Resource Manager (ARM) Templates

About

Every resource within Azure, no matter how it is deployed, will have a resource definition written as an ARM template in JSON. There are also certain resources that no matter what language they utilized will require the definition be written in a JSON/ARM template. Such resources as Azure Policy, Azure Data Factory, and Azure Logic Apps just to name a few.

Some Pointers

• It is JSON file, not a programming language
• Explicitly call out any dependency between templates or resources
• Any Export Resource button in Azure will product an ARM template
• Day 0 support for any Azure resources, even those in private preview
• Azure specific
• Easily declare individual Azure Resource provider API versions
• No state file

How It Works

The JSON file will be submitted directly to the Azure Resource Manager for provisioning the necessary Azure resources.

Source From: Microsoft Docs

PreReqs

• Azure CLI

Validating Changes

The best way to validate changes would be to leverage the Azure CLI what-if command similar to: az deployment sub what-if --location EastUS --name azureADOCLIDeployment --template-file main.json --parameters parameters/dev.eus.parameters.json

For more information check out the ARM Template deployment what-if operation

Deploying

Deployment for these examples are done at the Subscription level. This is done to ensure full deployment by creating the required Resource Group.

az deployment sub create --name storageDeployment --location eastus --template-file main.json --parameters parameters/dev.eus.parameters.json

Links

• Microsoft Azure Quickstarts
• Microsoft Learning Path
• ARM Resource Schemas
• Bicep to ARM Playground
• ARM Template Schema
• How to Export an ARM Template