Documentation on how to use OpenCost with an existing prometheus installation on OpenShift?

[kastl-ars]

Hi all,

I would like to run OpenCost in OpenShift, but am unsure before even starting due to the various options in the values.yaml regarding authentication to an external Prometheus.

https://github.com/opencost/opencost-helm-chart/blob/main/charts/opencost/values.yaml#L320

Our OpenShift cluster has a thanos-querier service running, that requires authentication using the serviceaccount token. How would I put this into the values.yaml?

I figured something like the following could work, but I am not sure if the bearertoken works with a Kubernetes serviceAccount token or needs some other format?

  prometheus:
    secret_name: ~
    existingSecretName: my-existing-service-account-token-secret
    username: ""
    username_key: ""
    password: ""
    password_key: ""
    bearer_token: ""
    bearer_token_key: "token" # the key used for the token in the my-existing-service-account-token-secret secret
    external:
      enabled: true
      url: "https://thanos-querier...."

Any hints are highly appreciated.

Kind Regards, Johannes