azure-pipelines: scaler kills agents in use

[zayacb]

Hello,
I'm testing keda v2.13 with our self-hosted azure build agents (they are deployed on aws eks v1.25.16)

After some tests I noticed that some jobs fail with the following error:
##[error]The agent has received a shutdown signal. This can happen when the agent service is stopped, or a manually started agent is canceled.

Is there anything I can do to prevent this?

resources I deployed:

apiVersion: v1
kind: Secret
metadata:
  name: pipeline-auth
data:
  personalAccessToken: 'token'
---
apiVersion: keda.sh/v1alpha1
kind: TriggerAuthentication
metadata:
  name: pipeline-trigger-auth
spec:
  secretTargetRef:
    - parameter: personalAccessToken
      name: pipeline-auth
      key: personalAccessToken
---
apiVersion: keda.sh/v1alpha1
kind: ScaledObject
metadata:
  name: azure-pipelines-scaledobject
spec:
  scaleTargetRef:
    name: azdevops-deployment
  minReplicaCount: 1
  maxReplicaCount: 7
  triggers:
  - type: azure-pipelines
    metadata:
      poolName: "pool-name"
      organizationURLFromEnv: "AZP_URL"
    authenticationRef:
     name: pipeline-trigger-auth

[JorTurFer]

You should use ScaledJobs for this kind of workloads. You can get more info about this use case here: https://keda.sh/blog/2021-05-27-azure-pipelines-scaler/

[zayacb]

Thank you @JorTurFer, I'll try this one

[haithamshahin333]

Hello,

Working on something similar @JorTurFer, I'm trying to understand is the personalAccessToken parameter injected into the agent as an environment variable under AZP_TOKEN? How do we actually use the PAT token with the parameter in our script as the agent starts?

Appreciate your help in advance!

[JorTurFer]

the PAT has to be injected as AZP_TOKEN

[haithamshahin333]

Thank you @JorTurFer for the reply! I think I'm missing how it's actually injected as AZP_TOKEN. If we use the above yaml as an example, notice that the triggerAuthentication parameter personalAccessToken is set. How does that then make it's way into the agent as AZP_TOKEN?

I documented my question/scenario here if we want to move this chat over: #6139

[JorTurFer]

KEDA doesn't inject the value as AZP_TOKEN, you have to do it by yourself mounting the env from a secret