ADO agents fail to start when using vmscaleset image Ubuntu 24.04

[tumm0283]

Description

I have created a new vmscaleset using the latest Ubuntu 24.04 image. when trying to point ADO pipeline to this new image (Ubuntu 24.04) ,i see the VM gets created but in ado agents won't show up even though everything has been permissioned.

we have same instance setup using Ubuntu 22.04 and everything works (Agents) no issues.

Platforms affected

• [X] Azure DevOps
• [ ] GitHub Actions - Standard Runners
• [ ] GitHub Actions - Larger Runners

Runner images affected

• [ ] Ubuntu 20.04
• [ ] Ubuntu 22.04
• [X] Ubuntu 24.04
• [ ] macOS 12
• [ ] macOS 13
• [ ] macOS 13 Arm64
• [ ] macOS 14
• [ ] macOS 14 Arm64
• [ ] macOS 15
• [ ] macOS 15 Arm64
• [ ] Windows Server 2019
• [ ] Windows Server 2022

Image version and build link

Agent version 1.25.2.0 OS version Ubuntu 24.04

Is it regression?

Yes, 22.04 is fine

Expected behavior

I expect the agents to scale up when using the image based on Ubuntu 24.04. As it works for Ubuntu 22.04 image

Actual behavior

found similar github post https://github.com/microsoft/azure-pipelines-agent/issues/5012#issuecomment-2421014643 is there any issues with ado pipeline agent ?

Repro steps

1.Run GenerateResoureandImage 2.Run Packer 3.Update RG to the new image created 4. Create a new agent pool in ADO based on the subscription and VMSS pool 5. Run the pipeline to new pool