Anthos clusters on AWS (GKE on AWS) supports the following authentication methods:
- OpenID Connect (OIDC).
To log in using the Google Cloud console with Connect, Anthos clusters on AWS can use a Kubernetes service account's bearer token. For more information, see Logging in to a cluster from the Google Cloud console.
The Kubernetes API server and the ID token
After authenticating with the cluster, you can interact using the
of gcloud CLI. When
kubectl calls the Kubernetes API server on behalf
of the user, the API server verifies the token by using the OpenID provider's
public certificate. Then the API server parses the token to learn the user's
identity and the user's security groups.
The API server determines whether the user is authorized to make this particular call by comparing the user's security groups to the cluster's role-based Access Control (RBAC) policy.
Anthos clusters on AWS supports OIDC authentication with the Anthos Identity Service. Anthos Identity Service supports many identity providers. For more information, see Supported identity providers.
With OIDC, you can manage access to a cluster with the standard procedures in your organization for creating, enabling, and disabling employee accounts. You can also use your organization's security groups to configure access to a Kubernetes cluster or to specific services in the cluster.
A typical OIDC login flow follows:
A user signs in to an OpenID provider by presenting a username and password.
The OpenID provider signs and issues an ID token for the user.
The gcloud CLI sends an HTTPS request to the Kubernetes API server. The application includes the user's ID token in the request header.
The Kubernetes API server verifies the token by using the provider's certificate.
Signing in with the gcloud CLI
You run the
gcloud anthos auth login command to authenticate with your
clusters. The gcloud CLI authenticates your request to the Kubernetes
To use the gcloud CLI, your OIDC ID tokens must be stored in the
You add tokens to your
kubeconfig file with
gcloud anthos create-login-config.
Anthos clusters on AWS uses the gcloud CLI to request and
obtain the ID token and other OIDC values in the