Azure CLI

The Azure CLI is a cross-platform command-line tool for managing Azure resources. This guide covers 2025 best practices, installation on Linux/WSL/NixOS, real-life DevOps scenarios, LLM integration, a

2025 Best Practices

• Always use the latest Azure CLI version (az upgrade)

• Use service principals or managed identities for automation, not personal accounts

• Store secrets in Azure Key Vault, not in scripts or environment variables

• Use --output json for scripting and automation

• Leverage az account set and named profiles for multi-tenant/multi-subscription work

• Use .envrc and direnv for environment isolation

• Automate with LLMs (GitHub Copilot, Claude) for repeatable workflows

• Enable CLI telemetry only if required for troubleshooting

Installation

Linux (Ubuntu/Debian/Fedora/Arch)

# Ubuntu/Debian
curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash

# Fedora
sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
sudo dnf install -y https://packages.microsoft.com/config/rhel/9.0/packages-microsoft-prod.rpm
sudo dnf install azure-cli

# Arch Linux
yay -S azure-cli

NixOS

Add to your configuration.nix:

{ pkgs, ... }:
{
  environment.systemPackages = with pkgs; [ azure-cli ];
}

Then rebuild:

sudo nixos-rebuild switch

Windows Subsystem for Linux (WSL)

Follow the Linux instructions inside your WSL terminal. For persistent PATH, add to ~/.bashrc or ~/.zshrc:

export PATH=$PATH:/usr/local/bin

Docker/Podman

docker run -it mcr.microsoft.com/azure-cli
# Or with SSH keys:
docker run -it -v ${HOME}/.ssh:/root/.ssh mcr.microsoft.com/azure-cli

Windows

winget install -e --id Microsoft.AzureCLI

Authentication & Profile Management

Login

az login                # Interactive browser login
az login --use-device-code   # For headless/remote
az login --service-principal -u <appId> -p <password|cert> --tenant <tenant>

List and Set Subscriptions

az account list --output table
az account set --subscription <subscription-id>

Named Profiles (2025+)

az account set --subscription <sub-id> --name dev
az account set --subscription <sub-id> --name prod
# Switch profiles
ez az account set --name dev

Using .envrc and direnv for Environment Isolation

Create a .envrc in your project directory:

export AZURE_SUBSCRIPTION_ID="<sub-id>"
export AZURE_TENANT_ID="<tenant-id>"
export AZURE_DEFAULTS_GROUP="my-rg"
export AZURE_DEFAULTS_LOCATION="westeurope"
az account set --subscription $AZURE_SUBSCRIPTION_ID

Enable direnv:

direnv allow

Real-Life Scenarios

1. Provision a VM with Terraform and az CLI

# main.tf
provider "azurerm" {
  features {}
}
resource "azurerm_resource_group" "rg" {
  name     = var.rg_name
  location = var.location
}

az login
terraform init && terraform apply

2. Automate AKS Authentication and kubectl Context

az aks get-credentials --resource-group my-rg --name my-aks --overwrite-existing
kubectl get nodes

3. Use az CLI with GitHub Copilot or Claude

• Use Copilot/Claude to generate az CLI scripts for resource automation:

# Example prompt to Copilot/Claude:
# "Generate a script to create a storage account and upload a file using az CLI."

• Review, test, and version-control generated scripts.

4. Multi-Cloud/Hybrid Automation

• Use az CLI in GitHub Actions, Azure Pipelines, or GitLab CI/CD for IaC and deployment.

• Example GitHub Actions step:

- name: Azure Login
  uses: azure/login@v2
  with:
    creds: ${{ secrets.AZURE_CREDENTIALS }}
- name: Deploy Bicep
  run: az deployment group create -g my-rg -f main.bicep

Authenticating Against AKS and Other Services

AKS

az aks get-credentials --resource-group my-rg --name my-aks
kubectl get pods

Azure Container Registry (ACR)

az acr login --name myregistry

Azure Key Vault

az keyvault secret show --vault-name myvault --name mysecret

Useful Resources

• Azure CLI Docs
• Azure CLI Samples
• direnv
• GitHub Copilot
• Claude LLM