Скачать или смотреть How to Run Azure VM Extension PowerShell Script from a Git Repository

Learn how to execute a PowerShell script stored in a Git repository as an Azure VM extension. Follow our step-by-step guide to easily configure your ARM templates.
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Running Azure VM Extension PowerShell Script from a Git Repository

When deploying Azure Virtual Machines (VMs), you might find yourself needing to execute scripts post-deployment. A common scenario involves running PowerShell scripts via Azure's Custom Script Extension. However, what if you want to host those PowerShell scripts in a Git repository instead of a local file system? This post will guide you through that process using Azure Resource Manager (ARM) templates effectively.

Setting the Stage

You might already be familiar with using Azure Resource Manager templates (ARM templates) for deploying resources. In this context, extensions allow you to run scripts on the VM once it’s deployed. The initial approach usually involves referencing a local path; however, integrating a script from a remote Git repository can enhance collaboration and version control.

The Challenge

In a typical ARM template, you may see a command like this being used to run a PowerShell script:

[[See Video to Reveal this Text or Code Snippet]]

This references a file in a specified local directory. To move this to a script hosted in Git, we need to adjust the parameters.

The Solution

Configure the Script URL: First and foremost, ensure that the URL pointing to your PowerShell script hosted on GitHub (or any other repository) is formatted correctly. The URL should look something like this:

[[See Video to Reveal this Text or Code Snippet]]

This link must be accessible to Azure for the script to execute properly.

Set the scriptURL Parameter: In your ARM template, assign this URL to the scriptURL parameter you will utilize in the fileUris property. It should resemble:

[[See Video to Reveal this Text or Code Snippet]]

Update the commandToExecute: Following this adjustment, you can simplify the command to execute your script as shown below:

[[See Video to Reveal this Text or Code Snippet]]

Full Example of ARM Template Snippet

Here's how your ARM template might look after making the necessary adjustments:

[[See Video to Reveal this Text or Code Snippet]]

Important Notes

Custom Script Extension Logs: If you encounter issues, Azure provides logs that can help you troubleshoot. You can find relevant logs at the following locations on your VM:

C:\WindowsAzure\Logs\Plugins\Microsoft.Compute.CustomScriptExtension

C:\Packages\Plugins

Internet Access: Ensure that your Azure VM has access to the internet to fetch scripts from your Git repository.

Conclusion

Integrating a PowerShell script stored in a Git repository into your Azure VM deployment via ARM templates is a straightforward process. Following the above steps will enable you to maintain scripts efficiently while ensuring that your Azure VMs can execute the latest version of your scripts seamlessly.

Now, you can easily enhance your infrastructure deployments by leveraging the power of Git with Azure's Custom Script Extensions!