virtual machine scaleset doesn't show up on agent pool

Question

Hope you are doing well,

I am testing the Azure DevOps environment, and I created a virtual machine scale-set to execute my build pipeline, but what is very odd is that I created the pool based on Microsoft instruction, but when I go to check the agent to see the instance, there is no instance appeared however when I check on azure portal | virtual machine scale set they are already there.

When I commit and run the pipeline, it gives me this error "The agent request is not running because all potential agents are running other requests. Current position in queue: 1

No agents in pool hostedself are currently able to service this request." do you have any idea what is the issue?

Thank you in advance,

Best Regards,

I have explained everything that I tried, I tried many times creating new pools new VMSS but didn't work at all.

Answer 1

Refer to this doc: Orchestration modes

Azure virtual machine scale sets can be configured with two orchestration modes: Uniform and Flexible. Azure Pipelines support for the Uniform orchestration mode is generally available, to all customers.

By default, Azure VMSS will use Flexible mode.

To solve this issue, you need to manually select the Uniform mode when creating the VMSS.

Upon creation Uniform orchestration mode VMSS in Azure Portal, check the related settings addressed in this link : Create the scale set

Upgrade policy - Manual

Scaling - Manual scale

Then you can create the VMSS Agent Pool in Azure DevOps and check if it can work.