Azure Classroom Series – 25/Sept/2020

Getting Started with ARM Templates

• Prereq’s:

  1. JSON
  2. Visual Studio Code
  3. Manual Creation of Resources

• ARM Template file Structure Refer Here

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "",
  "apiProfile": "",
  "parameters": {  },
  "variables": {  },
  "functions": [  ],
  "resources": [  ],
  "outputs": {  }
}

• The minimal ARM Template will have the following structure

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "",
  "resources": [  ]
}

• Install ARM Tools extension in visual studio code
• So lets start with minimal version of it
  1. $schema
  2. contentVersion
  3. resources
• The template as of now looks as

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "0.0.0.1",
    "resources": [

    ]

}

• Now lets look at manual resource creation for the virtual network
• Now Lets try to write an arm template which creates
  • ntier virtual network with 3 subnets Web, Business and Data
• Resource Schema Refer Here
• For resources selection, Follow the approach shown below
• The template written so far is

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "0.0.0.1",
    "resources": [
        {
            "name": "ntier",
            "type": "Microsoft.Network/virtualNetworks",
            "apiVersion": "2020-05-01",
            "location": "East US",
            "properties": {
                "addressSpace": {
                    "addressPrefixes": [ "192.168.0.0/16" ],
                    "subnets": [
                        {
                            "name": "WebSubnet",
                            "properties": {
                                "addressPrefix": "192.168.0.0/24"
                            }
                        },
                        {
                            "name": "AppSubnet",
                            "properties": {
                                "addressPrefix": "192.168.0.0/24"
                            }
                        },
                        {
                            "name": "DbSubnet",
                            "properties": {
                                "addressPrefix": "192.168.0.0/24"
                            }
                        }
                    ]
                }
            }


        }

    ]

}

• Next steps:
  1. Validating & executing template