paulbes/gcp-auth-webhook

A Kubernetes webhook for automated GCP authentication.

gcp-auth-webhook

A server that includes:

• A mutating webhook that will patch any newly created pods in your Kubernetes cluster with GCP credentials (whose location is currently hardcoded to /var/lib/minikube/google_application_credentials.json).
• A mutating webhook that will patch any newly created service accounts in your Kubernetes cluster with an image pull secret.
• A thread that monitors namespaces to make sure all namespaces include a image pull secret to be able to pull from GCR and AR.

Setting the environment variable MOCK_GOOGLE_TOKEN to true will prevent using the google application credentials to fetch the token used for the image pull secret. Instead the token will be mocked.

Deployment

Use the image gcr.io/k8s-minikube/gcp-auth-webhook as the image for a Deployment in your Kubernetes manifest and add that to a MutatingWebhookConfiguration. See minikube for details.

Running Locally

The easiest way to run the server locally is:

• Modify minikube's gcp-auth Deployment image to be local/gcp-auth-webhook:$(VERSION) (replace $(VERSION) with your version)
• Build and run minikube
• Run eval $(path_to_minikube/minikube docker-env) and then make local-image to make the image available from within minikube
• Run path_to_minikube/minikube addons enable gcp-auth to enable the addon, which creates a pod in the gcp-auth namespace with the gcp-auth-webhook server