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Authenticating google cloud SDK services in local docker environments
Google’s auth libraries attempt find valid credentials in a few locations:
- An Environment variable
GOOGLE_APPLICATION_CREDENTIALS
a json blob ~ - The metadata server on Google Cloud Platform
- Check the default location of credentials file
$HOME/.config/gcloud/application_default_credentials.json
(Location may vary)
A mistake I encountered
gcloud auth login
- Allows you to run gcloud commands from your terminal and it will find your credentials automatically.gcloud auth application-default login
Stores Default Credentials’ in a file namedapplication_default_credentials.json
I needed to use the second so the application credentials are created and accessible for google sdk based libraries
Below is a somple snippet to mount your local credentials into a docker container via compose
# Snippet of docker-compose...
volumes:
- $HOME/.config/gcloud:/root/.config/gcloud
# rest of file ...
2021-02-10