Hi team, we are using azure cloud services extended support service and we spin up web and worker roles. While deploying the web role, we wanted to run a command, install bat file and run a powershell script in web role VMS. From docs, i got to know that we need custom script extension. can you guide us with example of ARM template and also do we need to touch startup task any of cloud service definition files . Thanks

@Kruthiventi, BalaSuryaSarathSairam Updating: Custom extensions are not supported. Azure Cloud Services (Extended Support) primarily focuses on maintaining compatibility with existing applications and workloads that were previously using Azure Cloud Services (classic), but it does not have feature parity with other Azure services like Virtual Machines or Azure Resource Manager (ARM) templates, which support custom extensions more broadly. The error message you are encountering indicates that the specific extension you are trying to use ("Microsoft.Compute" - "CustomScriptExtension" - "1.10") is not available for Azure Cloud Services (Extended Support). This is consistent with the general limitations of Azure Cloud Services (Extended Support) when it comes to custom extensions. If you require the use of custom extensions or more advanced configuration and management capabilities, you might want to consider migrating your application to Azure Virtual Machines or other services that support ARM templates and custom extensions. This will provide you with a broader range of customization options and better alignment with modern Azure management practices. If you still have questions, please let us know in the " comments" and we would be happy to help you. Comment is the fastest way of notifying the experts. If the answer has been helpful, we appreciate hearing from you and would love to help others who may have the same question. Accepting answers helps increase visibility of this question for other members of the Microsoft Q&A community. Thank you for helping to improve Microsoft Q&A!

How to install custom scripts and powershell commands in azure cloud services extended support

Accepted answer

deherman-MSFT 37,666 Reputation points Microsoft Employee

2024-11-13T18:53:19.8033333+00:00

@Kruthiventi, BalaSuryaSarathSairam

Updating:
Custom extensions are not supported. Azure Cloud Services (Extended Support) primarily focuses on maintaining compatibility with existing applications and workloads that were previously using Azure Cloud Services (classic), but it does not have feature parity with other Azure services like Virtual Machines or Azure Resource Manager (ARM) templates, which support custom extensions more broadly.

The error message you are encountering indicates that the specific extension you are trying to use ("Microsoft.Compute" - "CustomScriptExtension" - "1.10") is not available for Azure Cloud Services (Extended Support). This is consistent with the general limitations of Azure Cloud Services (Extended Support) when it comes to custom extensions.

If you require the use of custom extensions or more advanced configuration and management capabilities, you might want to consider migrating your application to Azure Virtual Machines or other services that support ARM templates and custom extensions. This will provide you with a broader range of customization options and better alignment with modern Azure management practices.

If you still have questions, please let us know in the "comments" and we would be happy to help you. Comment is the fastest way of notifying the experts.

If the answer has been helpful, we appreciate hearing from you and would love to help others who may have the same question. Accepting answers helps increase visibility of this question for other members of the Microsoft Q&A community.

Thank you for helping to improve Microsoft Q&A!
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Kruthiventi, BalaSuryaSarathSairam 65 Reputation points

2024-11-14T13:42:51.2133333+00:00

Thanks for the reply. does this "CustomScriptExtension" work for Cloud service extended support service as well and not just azure virtual machines?

Kruthiventi, BalaSuryaSarathSairam 65 Reputation points

2024-11-14T13:47:01.4766667+00:00

not sure if this information is accurate but gpt says
"Azure Cloud Services (Extended Support) is built on the classic Azure Cloud Services model, which differs from virtual machines (VMs) in that it traditionally does not support VM extensions like the CustomScriptExtension. VM extensions, including the CustomScriptExtension, are designed for Azure Virtual Machines and allow custom scripts to be executed post-deployment. However, Cloud Services use a different model, where customization is typically handled via startup tasks defined in the ServiceDefinition.csdef file.

In Cloud Services, you configure setup and initialization tasks as startup tasks within the ServiceDefinition.csdef rather than using VM extensions, and ARM templates for Cloud Services Extended Support rely on these startup tasks for customization instead.

In summary:

VM Extensions (like CustomScriptExtension): Used for virtual machines to run scripts, perform installations, etc., post-deployment.

Startup Tasks: Used for Cloud Services (Extended Support) to handle custom setup or script execution during instance startup."

deherman-MSFT 37,666 Reputation points Microsoft Employee

2024-11-15T16:58:08.1433333+00:00

@Kruthiventi, BalaSuryaSarathSairam You might be correct, the Extensions page for Cloud Services Extended Support only lists the 4 extensions. Let me check with our service team to confirm.
https://learn.microsoft.com/en-us/azure/cloud-services-extended-support/extensions

deherman-MSFT 37,666 Reputation points Microsoft Employee

2024-11-15T18:32:14.6466667+00:00

@Kruthiventi, BalaSuryaSarathSairam I confirmed this is not possible. I tested and got the error. Update-AzCloudService_CreateViaIdentity: The extension with publisher: 'Microsoft.Compute', type: 'CustomScriptExtension' and version: '1.10' is not available for cloud service. Please make sure you are using right extension Publisher, Type, and Version.
Can you let me know your use case for using Cloud Service Extended Support?

Kruthiventi, BalaSuryaSarathSairam 65 Reputation points

2024-11-18T11:48:39.45+00:00

@deherman-MSFT we want to run .bat file, and poweshell script (.ps1) and install an .exe in azure cloud service extended support on deployment. I guess we need to use startup tasks?

from documentation: https://learn.microsoft.com/en-us/azure/cloud-services-extended-support/cloud-services-model-and-package#csdef

Startup Contains tasks that are run when the role starts. The tasks are defined in a .cmd or executable file.

So .ps1 and .bat file arent supported? currently pipeline deployment is taking forever if we try to include .ps1 file in start up task

where we can see logs that is causing infinite deployment when we deploy through arm template from azure devops pipeline

are those two extension files arent supported and we should re write them in cmd?

Kruthiventi, BalaSuryaSarathSairam 65 Reputation points

2024-11-25T13:17:18.7533333+00:00

Startup tasks worked
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