Why and when to use Azure CLI

I have been a heavy Windows user for many years, but lately I have been using another OS to increase my vision and experience. But the issue is, PowerShell is a Windows OS based, and usually is not available on Non-Windows OS (as far as I know). So, I need to evolve to another command line tool. The natural progression is Azure CLI. Ok, you probably get the picture, but what is Azure CLI? How Azure CLI can help us managing Azure from a Non-Windows OS devices?

The Azure CLI provides a command-line, shell-based interface that you can use to interact with your Azure subscriptions. Although for the most part, the Azure CLI offers the same set of features as the Azure PowerShell modules, two primary differences exist between them:

  • You can install and run the Azure CLI not only on the Windows operating system but also on Linux and OS X.
  • Because of its ability to run on Linux, it is straightforward to integrate the Azure CLI with several traditional shell-scripting tools, such as grep, awk, sed, xargs, and cut, thereby allowing Linux admins to use their existing skills.

The installation process for the Azure CLI depends on the target operating system; however, the installers for all the supported operating systems are available directly from the Azure Downloads page (see here). Like the Azure PowerShell modules, the Azure CLI for the Windows operating system relies on Web PI. On the Linux and OS X operating systems, you can perform the installation by using an npm package.

On the Windows operating system, the installation modifies the path system environment variable. Effectively, after you launch a command prompt window, you can automatically run any of the Azure CLI commands.

Note: All commands start with the word azure. To learn more about the Azure CLI syntax, run the following command from the Windows command prompt:
azure help

After you install the Azure CLI, you can connect to the Azure subscriptions that you want to manage. Like the Azure PowerShell modules, to establish such a connection, you first need to authenticate by using either a Microsoft account or a work or school account that exists in the Azure AD tenant associated with the target subscription.

To initiate the authentication process, run the following command from the command prompt:
azure login

A message displays, prompting you to start a browser and browse to the Device Login page, where you need to  enter the code provided in the same message. This step verifies the Azure CLI as the application publisher and allows you to type your user credentials to authenticate to the Azure subscription.

Azure AD authentication is token-based, and after signing in, the user remains authenticated until the authentication token expires. The expiration time for an Azure AD token is 12 hours.

After you authenticate, you can use the azure account list command to view a list of subscriptions associated with your account. If you have multiple subscriptions, you can specify the one you want to manage by using the azure account set command and providing either the subscription name or its ID.

Note: You can identify the subscription name and ID by reviewing the output of the azure account list command.

Unlike the Azure PowerShell modules, the Azure CLI uses separate modes for working with the Azure Resource Manager deployment model and the Service Management deployment model. Both modes use the same set of commands, and to switch between them, you can use the azure config mode command.

To switch to the Azure Resource Manager mode, run the following command:
azure config mode arm

To switch to the classic deployment mode, run the following command:
azure config mode asm

At this point, you can also use Azure PowerShell cmdlets to view, provision, and manage Azure services and resources.

 

Written by Marcos Nogueira

Marcos Nogueira

With more than 18 years experience in Datacenter Architectures, Marcos Nogueira is currently working as a Principal Cloud Solution Architect. He is an expert in Private and Hybrid Cloud, with a focus on Microsoft Azure, Virtualization and System Center. He has worked in several industries, including Aerospace, Transportation, Energy, Manufacturing, Financial Services, Government, Health Care, Telecoms, IT Services, and Gas & Oil in different countries and continents.

Marcos was a Canadian MVP in System Center Cloud & Datacenter Managenment and he has +14 years as Microsoft Certified, with more than 100+ certifications (MCT, MCSE, and MCITP, among others). Marcos is also certified in VMware, CompTIA and ITIL v3. He assisted Microsoft in the development of workshops and special events on Private & Hybrid Cloud, Azure, System Center, Windows Server, Hyper-V and as a speaker at several Microsoft TechEd/Ignite and communities events around the world.

Leave a Reply

Your email address will not be published. Required fields are marked *