What Is Azure CLI

In this article, I’ll walk you through everything you need to know about Azure Command-Line Interface ( Azure CLI), which provides you with a new way to interact with Azure resources.

What Is Azure CLI

The Azure Command-Line Interface (CLI) is a cross-platform command-line tool designed to create and manage Azure resources. Unlike the point-and-click nature of the Azure Portal, Azure CLI allows you to script and automate virtually any Azure operation through text-based commands.

Before diving into specific usage scenarios, let’s explore what makes Azure CLI such a powerful tool:

  • Cross-platform compatibility: Works on Windows, macOS, and Linux
  • Consistent command structure: Follows a predictable “az + resource + operation” pattern
  • Output formatting options: Results can be formatted as JSON, table, or TSV
  • Automation capabilities: Easily incorporated into scripts and CI/CD pipelines
  • Query support: Filter and manipulate command outputs
  • Multiple authentication methods: Support for service principals, managed identities, and interactive login

Installing Azure CLI

Getting started with Azure CLI is straightforward, regardless of your operating system. Here’s how you can typically set it up:

Windows Installation

# Using PowerShell (Run as Administrator)
Invoke-WebRequest -Uri https://aka.ms/installazurecliwindows -OutFile .\AzureCLI.msi
Start-Process msiexec.exe -Wait -ArgumentList '/I AzureCLI.msi /quiet'

Check out Install Azure CLI on Windows Without Admin Rights for more information.

macOS Installation

# Using brew
brew update && brew install azure-cli

Check out How to install Azure CLI on Mac for more information.

Linux Installation (Ubuntu/Debian)

# Add Microsoft signing key and repository
curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
sudo apt-get update
sudo apt-get install azure-cli

Check out Install Azure CLI on Linux for more clarity.

After installation, I always verify the setup with:

az --version

This displays the installed version and dependent libraries, confirming a successful installation.

What Is Azure CLI

Check out how to update Azure CLI

Getting Started with Azure CLI

Authentication Methods

Before you can use Azure CLI to manage resources, you need to authenticate. You can typically use one of these methods:

Interactive Login

For personal use or initial setup:

az login

This opens a browser window where you can enter your Azure credentials.

Service Principal Authentication

For automated scripts and CI/CD pipelines:

az login --service-principal --username APP_ID --password PASSWORD --tenant TENANT_ID

Managed Identity Authentication

When running from an Azure VM or service with a managed identity:

az login --identity

Setting the Right Context

One practice I always emphasize to my teams is to verify your working context before executing commands:

# List subscriptions
az account list --output table
azure cli version
# Set the active subscription
az account set --subscription "My Subscription"

Core Azure CLI Concepts

Understanding Azure CLI’s structure will help you become proficient quickly. All commands follow a consistent pattern:

az <resource-group> <resource-type> <command> [parameters]

For example:

az vm create --resource-group MyResourceGroup --name MyVM --image UbuntuLTS

Command Groups and Subgroups

Azure CLI organizes commands into groups and subgroups representing Azure services and operations. Some common groups include:

  • az group – Resource group management
  • az vm – Virtual machine operations
  • az storage – Storage account management
  • az network – Networking resources
  • az webapp – App Service applications

To explore available commands within a group, use:

az vm --help
what is azure cli used for

Practical Azure CLI Examples

Let’s dive into some real-world examples I use regularly in my Azure projects:

Resource Group Management

# Create a new resource group
az group create --name MyProjectResources --location eastus

After executing the above command, I got the expected output as shown in the screenshot below.

microsoft azure cli
# List all resource groups
az group list --output table

After executing the above command, I got the expected output as shown in the screenshot below.

Azure CLI Examples

Working with Azure Storage

# Create a storage account
az storage account create --name azurelessonstrgeact --resource-group MyProjectResources --location eastus --sku Standard_LRS

After executing the above command, I got the expected output as shown in the screenshot below.

Azure CLI Example
# Create a blob container
az storage container create --name mycontainer --account-name azurelessonstrgeact

After executing the above command, I got the expected output as shown in the screenshot below.

what is the latest azure cli version

Azure CLI Best Practices

Below are the best practices:

1. Use Resource Tags

Always tag your resources for better organization:

az group create \
  --name Production \
  --location eastus \
  --tags Environment=Production Department=Finance Project=SAP

2. Use Output Formats

Different output formats serve different purposes:

# For human readability
az vm list --output table

# For scripting
az vm list --output tsv

# For further processing
az vm list --output json > vms.json

3. Create Script Templates

Maintain a library of script templates for common operations:

# Template for environment setup
az group create --name ${ENV_NAME}-rg --location ${LOCATION}
az network vnet create --resource-group ${ENV_NAME}-rg --name ${ENV_NAME}-vnet --address-prefix 10.0.0.0/16

4. Use Configuration Files

For complex deployments, use JSON or YAML configuration files:

az vm create \
  --resource-group MyResourceGroup \
  --name MyVM \
  --settings-file vm-config.json

Troubleshooting Common Azure CLI Issues

Even experienced Azure users encounter issues with CLI. Here are solutions to problems:

Authentication Errors

If you receive authentication errors:

# Clear cached credentials
az account clear

# Reconnect
az login

Command Not Found

If Azure CLI commands aren’t found:

# Verify installation
az --version

# Update CLI to latest version
az upgrade

Conclusion

The Azure Command-Line Interface has transformed how we manage cloud resources, enabling efficient automation, consistent deployments, and seamless integration with modern DevOps practices. Whether you’re managing a handful of resources, Azure CLI provides the flexibility and power needed to operate.

Large-scale Azure implementations, investing time in knowing Azure CLI pays tremendous dividends in productivity and reliability.

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