oidc login attempts by oauth2client

[rakesh-p]

I am sending metrics from the local otel collector to the remote central otel collector. I have the following configuration in the local otel collector. I use keycloak for OIDC authentication. From the keycloak logs, it looks like for everytime metrics are sent from local to remote otel collector, a login attempt is made in the keycloak using the client_id and client_secret. Is this expected? Based on the documentation 'The extension fetches and refreshes the token after expiry automatically. ', I was hoping that the oauth2client will attempt login only for token renewal and not everytime when metrics needs to be sent to remote. The keycloak admin said there are several login attempts per second. What am i doing wrong please. any pointers for resolving this would be useful. thanks

   exporters:
      otlphttp/secure:
        auth:
          authenticator: oauth2client/client
        endpoint: https://telemetry.mycompany.com:443

    extensions:
      oauth2client/client:
        client_id: otel-collector-demo
        ç: xxxxxxx
        token_url: https://accounts-test.mycompany.com/auth/realms/company/protocol/openid-connect/token

    pipelines:
        metrics:
          exporters:
          - otlphttp/secure
          processors:
          - batch
          receivers:
          - prometheus