Azure arm templates

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Copyright © dotnetpiper.com
AZURE INFRA STRUCTURE AS CODE(IAC)
 Sachin Kalia
 @dotnetpiper

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AZURE ARM
Agenda
1. What is Azure Resource Manager
2. Understanding ARM Templates
3. Deploying simple PaaS based ARM Templates
4. Nested Templates
5. Templates Scopes
6. Activity Alerts enabling through ARM
7. Demonstration

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AZURE INFRASTRUCTURE AS CODE
• Azure Resource Manager - is a consistent management layer which allows to work with separate
resources as a group, in a single, coordinated operation.
• Background
• Azure Resource Manager, or ARM, is the primary deployment type for Azure
• Replaces the classic Azure Service Manager (ASM) model; aka “Azure v1”
• Used across cloud environments, including: Public (Azure), Sovereign (Gov Cloud), and Private
(Azure Stack)
• The ARM model lets you state "Here is what I intend to create" without having to write the
• sequence of programming commands to create it.
• Azure Resource Manager template - A JavaScript Object Notation (JSON) file that defines one or more
resources to deploy to a resource group. It also defines the dependencies between the deployed
resources. The template can be used to deploy the resources consistently and repeatedly.

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AZURE ARM
• Azure Agenda
1. How does Azure Resource Manager work?

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AZURE INFRASTRUCTURE AS CODE (IAC)
• Understanding ARM Template

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ARM TEMPLATE TOOLS WE CAN USE
• Visual Studio
• Visual Studio Code
• Terraform, Azure Building Blocks, Ansible, etc.
• Configuration via Azure Automation DSC (aka PowerShell DSC), IaaS VM Custom
Script Extension, Puppet, Chef, Salt Stack
• Visualize with ARMViz
• NotePad ++

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ARM TEMPLATE CORE STRUCTURE
{
"$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion": " 1 . 0 . 0 . 0 " ,
"parameters": { } ,
"variables" : { } ,
"resources": [ ] ,
"outputs": { }
}

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ARM TEMPLATE CORE STRUCTURE
• The allowed types for values are:
• String or secureString – any valid JSON string
• int – any valid JSON integer
• bool – any valid JSON Boolean
• object – any valid JSON object
• array – any valid JSON array

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ARM TEMPLATE PARAMETERS
"parameters": {
"storageAccountType": {
" t yp e " : " s t r i n g " , "defaultValue":
"Standard_LRS", "allowedValues": [
" Standard_LRS" ,
"Standard_GRS",
" Standard_ZRS" ,
"Premium_LRS"
] ,
"metadata": {
"description" : "Storage Account type"
}
} ,
"storageAccountName": {
" t yp e " : " s t r i n g " ,
"defaultValue": "azureglobalbootcamp2018",
"maxlength": 24,
"metadata": {
"description":"The nameof the Storage Account"
}
}
In the parameters section of the template, you specify which values you can input
when deploying the resources

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ARM TEMPLATE PARAMETERS FILE
{
"$schema": "http://schema.management.azure.com/schemas/201501-01/deploymentParameters.json#",
"contentVersion": "1.0.0.0",
"parameters": {
“winServerEdition": {
"value": “2012-R2-Datacenter"
} ,
"adminUsername": {
"value": “vmAdmin"
}
}
}
In the parameters section of the template, you specify which values you can input
when deploying the resources

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ARM TEMPLATE VARIABLE
"variables": {
"storageName":"[concat(toLower(parameters(‘prefix’)), resourceGroup().id)]“,
"environmentSettings": {
" t e s t " : {
"instanceSize": "Small",
"instanceCount": 1
} ,
"prod": {
"instanceSize": "Large",
"instanceCount": 4
}
}
}
In the variables section, you construct values that can be used throughout your
template.

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AZURE INFRASTRUCTURE AS CODE (IAC)
• Used across Public (Azure), Sovereign (Gov Cloud), and Private (Azure Stack)
• Obtain more granularity, tagging, RBAC
• Repeatable, templated deployments (including dependencies)
• Remember the Best Practices
• Metadata
• Descriptive Names
• pascalCasing
• Impose restrictions (i.e. MinLength, AllowedValues, etc.)
• Use Variables
• Do not store sensitive information in the parameters file (i.e. the Local
Admin password)

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DEMOS
• Simple ARM template deployment with PowerShell
• Azure Quick Start Gallery
• How to extract ARM template of existing resources
• Adding a Template directly from Azure Portal

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THANKS
www.dotnetpiper.com  @dotnetpiper

Azure arm templates

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