Trying to add gcp-auth addon fails despite having run gcloud auth login

[matthewmichihara]

Trying to add the gcp-auth addon fails despite having run gcloud auth login. This is confusing because the CLI error message 💣 Could not find any GCP credentials. Either run 'gcloud auth login' or set the GOOGLE_APPLICATION_CREDENTIALS environment variable to the path of your credentials file. and the docs at https://minikube.sigs.k8s.io/docs/handbook/addons/gcp-auth/ make it sound like running gcloud auth login should fix the error.

It seems like what I needed to do was run gcloud auth application-default login. When I run gcloud auth application-default login and then minikube addons enable gcp-auth, it seems to work correctly.

Should this have worked with just gcloud auth login?

Steps to reproduce the issue:

$ gcloud auth list
   Credentialed Accounts
ACTIVE  ACCOUNT
*       michihara@google.com

To set the active account, run:
    $ gcloud config set account `ACCOUNT`

$ minikube start
😄  minikube v1.12.3 on Darwin 10.15.6
✨  Automatically selected the docker driver
❗  Requested memory allocation (1991MB) is less than the recommended minimum 2000MB. Kubernetes may crash unexpectedly.
❗  Your system has 16384MB memory but Docker has only 1991MB. For a better performance increase to at least 3GB.

	Docker for Desktop  > Settings > Resources > Memory


👍  Starting control plane node minikube in cluster minikube
🔥  Creating docker container (CPUs=2, Memory=1991MB) ...
🐳  Preparing Kubernetes v1.18.3 on Docker 19.03.8 ...
🔎  Verifying Kubernetes components...
🌟  Enabled addons: default-storageclass, storage-provisioner
🏄  Done! kubectl is now configured to use "minikube"
$ minikube addons list
|-----------------------------|----------|--------------|
|         ADDON NAME          | PROFILE  |    STATUS    |
|-----------------------------|----------|--------------|
| ambassador                  | minikube | disabled     |
| dashboard                   | minikube | disabled     |
| default-storageclass        | minikube | enabled ✅   |
| efk                         | minikube | disabled     |
| freshpod                    | minikube | disabled     |
| gcp-auth                    | minikube | disabled     |
| gvisor                      | minikube | disabled     |
| helm-tiller                 | minikube | disabled     |
| ingress                     | minikube | disabled     |
| ingress-dns                 | minikube | disabled     |
| istio                       | minikube | disabled     |
| istio-provisioner           | minikube | disabled     |
| kubevirt                    | minikube | disabled     |
| logviewer                   | minikube | disabled     |
| metallb                     | minikube | disabled     |
| metrics-server              | minikube | disabled     |
| nvidia-driver-installer     | minikube | disabled     |
| nvidia-gpu-device-plugin    | minikube | disabled     |
| olm                         | minikube | disabled     |
| pod-security-policy         | minikube | disabled     |
| registry                    | minikube | disabled     |
| registry-aliases            | minikube | disabled     |
| registry-creds              | minikube | disabled     |
| storage-provisioner         | minikube | enabled ✅   |
| storage-provisioner-gluster | minikube | disabled     |
|-----------------------------|----------|--------------|
💡  To see addons list for other profiles use: `minikube addons -p name list`
$ minikube addons enable gcp-auth --alsologtostderr
W0910 10:20:46.913318   85439 root.go:246] Error reading config file at /Users/michihara/.minikube/config/config.json: open /Users/michihara/.minikube/config/config.json: no such file or directory
I0910 10:20:46.915691   85439 addons.go:53] Setting gcp-auth=true in profile "minikube"
I0910 10:20:46.915748   85439 mustload.go:64] Loading cluster: minikube
I0910 10:20:46.916876   85439 cli_runner.go:109] Run: docker container inspect minikube --format={{.State.Status}}
I0910 10:20:46.972742   85439 host.go:65] Checking if "minikube" exists ...
I0910 10:20:46.973188   85439 cli_runner.go:109] Run: docker container inspect -f "'{{(index (index .NetworkSettings.Ports "8443/tcp") 0).HostPort}}'" minikube
W0910 10:20:47.018265   85439 out.go:151] 💣  Could not find any GCP credentials. Either run `gcloud auth login` or set the GOOGLE_APPLICATION_CREDENTIALS environment variable to the path of your credentials file.
💣  Could not find any GCP credentials. Either run `gcloud auth login` or set the GOOGLE_APPLICATION_CREDENTIALS environment variable to the path of your credentials file.

[sharifelgamal]

This is a documentation issue, you need to run gcloud auth application-default login