gsutil config -r

gsutil config -r read-only access for storage resources.

Backing up existing config file "$HOME/.boto" to "$HOME/.boto.bak"...
This command will create a boto config file at $HOME/.boto
containing your credentials, based on your responses to the following
questions.
Please navigate your browser to the following URL:
https://accounts.google.com/o/oauth2/auth?client_id=1234072.apps.googleusercontent.com& redirect_uri=urn%3Aietf%3Awg%3Aoauth%3A2.0%3Aoob&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fdevstorage.read_only&access_type=offline&response_type=code
In your browser you should see a page that requests you to authorize access to Google Cloud Platform APIs and Services on your  behalf. After you approve, an authorization code will be displayed.

Enter the authorization code:

Related

• $HOME/.boto

See also

• gsutil config, -r, -w, -f, -e, --help, $HOME/.boto
• gsutil [ config | singurl | mb | iam | cp | ls | acl | defacl | ubla | du | cors | --help], $HOME/.boto, Cloud Shell