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For retrieving monitoring metrics from my project, I used below Python code:

from google.cloud import monitoring_v3 from google.oauth2 import service_account from googleapiclient import discovery credentials = service_account.Credentials.from_service_account_file( r'D:\GCP\credentials\blahblah-04e8fd0245b8.json') service = discovery.build('compute', 'v1', credentials=credentials) client = monitoring_v3.MetricServiceClient() project_name = f"projects/{blahblah-300807}" resource_descriptors = client.list_monitored_resource_descriptors( name=project_name) for descriptor in resource_descriptors: print(descriptor.type)

I did everything well. I gave the file path for credentials information correctly, but I received this error message:

raise exceptions.DefaultCredentialsError(_HELP_MESSAGE) 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

I even checked that link and tried the alternative method, but still, it didn't work. How can I rectify this? Am I making a mistake?

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You don't use the credential when you create the client

client = monitoring_v3.MetricServiceClient()

You can change it like this

client = monitoring_v3.MetricServiceClient(credentials=credentials)

Personally, I prefer to not explicitly provide the credential in the code, and I prefer to use the environment variable GOOGLE_APPLICATION_CREDENTIALS for this.

Create an environment variable in your OS with the name GOOGLE_APPLICATION_CREDENTIALS and the value that point to the service account key file D:\GCP\credentials\blahblah-04e8fd0245b8.json.

But, if it's on your own computer, you can even don't use service account key file (which is not really secure, I explain why in this article), you can use your own credential. For this, simply create an application default credential (ADC) like this gcloud auth application-default login

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Thank you. It worked by passing the credentials as an argument as you said. I created the environmental variable with passing the json file as value, but that didn't work
Because you are on Windows OS, and because it's Windows OS, have you restarted your computer after having set the environment variable?

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