'Invalid OAuth client credentials' error when setting up autoscaler for runners on Kubernetes in Bitbucket Cloud

Summary

While deploying autoscaler for runners on kubernetes, users may experience a credentials error:

Solution

Below are three possible causes/solutions for the problem.

• Ensure you have provided right permissions for the password. Minimum Scope to be provided:

  

• Make sure that the credentials are correctly encode with base 64 and later added them to k8s manifest without trailed characters(such as empty space/new line )

  1 2 echo -n $BITBUCKET_OAUTH_CLIENT_ID | base64 echo -n $BITBUCKET_OAUTH_CLIENT_SECRET | base64

• Ensure that the Kubernetes secret is created in the correct namespace where the runner is being deployed. Below command can be used:

  1 kubectl create secret generic <secret-name> --from-literal=<key>=<value> -n <namespace>

  If the issue persists, look for any additional error details that might give more insight into the issue. Use the following command to get logs from the autoscaler pod:

  1 kubectl logs <autoscaler-pod-name> -n <namespace>