Bring your towel and join one of the fastest growing data communities. Welcome to our second-generation open source orchestration platform, a completely rethought approach to dataflow automation.

Prefect Community

Hello everyone ! Sorry If this has already been answered here but my search did not return anything.
I have trouble understanding authentication through google cloud to store my results with the help of prefect cloud secrets:

Following this <https://docs.prefect.io/core/concepts/secrets.html#default-secrets|part of the documentation>, I have setup a secret GCP_CREDENTIALS containing the JSON service account key.
From what I understood, this should be enough to automatically authenticate my flows with the right credentials: however, when I run my docker Agent, my task fails  with the following traceback:

`google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials. Please set GOOGLE_APPLICATION_CREDENTIALS or explicitly create credentials and re-run the application. For more information, please see <https://cloud.google.com/docs/authentication/getting-started|https://cloud.google.com/docs/authentication/getting->started`

Is there something I am missing there ? Should I include the google credentials when building my flow's docker image ?

I’ve bundled my credentials into the docker image, but I’d love to know if there’s a better way.

Hi <@U01HFA50MM1> - can you give some more information about your setup? Are you using Prefect Cloud and trying to run tasks from the Task library?

Hi <@UN6FTLFAS>,  I am using a cutsom task but try to save its result (a dictionary) into a `GCSResult`

My code looks like this

```import prefect
from prefect.engine.results import GCSResult
from prefect.run_configs import DockerRun
from prefect.storage import Docker

@prefect.task(checkpoint=True, result =GCSResult(bucket="redacted"))
def task1():
   ...

storage = DockerStorage(...)
run_config = DockerRun(dockerfile="Dockerfile")

with prefect.Flow("myflow") as flow:
    results = task1()
    ... # Other tasks downstream

flow.register("test")    ```
If I remove the `result` parameter, everything runs fine.

If I decide to run this flow locally (changing storage, config and using `flow.run()` instead of `flow.register()`, I can save my results to GCS (using an environment variable for authentication)

I see two solutions at the moment:
• include the service account key when building my docker Image so I can reach it from inside the container the same way as locally
• ~Create a `GCSUpload` task to save my results (though it won't be possible to use these results as checkpoint), which in this case the GCP_CREDENTIALS secret from prefect Cloud should work ?~ (Just tested this and was met with the same error as previously)