kubectl describe secret -A

Minikube

kubectl describe secret -A
Name:         bootstrap-token-zdluu3
Namespace:    kube-system
Labels:       <none>
Annotations:  <none> 

Type:  bootstrap.kubernetes.io/token

Data
====
token-id:                        6 bytes
token-secret:                    16 bytes
usage-bootstrap-authentication:  4 bytes
usage-bootstrap-signing:         4 bytes
auth-extra-groups:               47 bytes
expiration:                      20 bytes

See also

• Kubernetes secrets: kubectl [ get | create | describe | delete | secret ] secrets, secret.yml, kind: Secret, secretKeyRef, default-token, imagePullSecrets:, kubernetes.io/dockerconfigjson