BootstrapTokenExpirationKey is when this token should be expired and no longer used.

BootstrapTokenIDKey is the id of this token.

BootstrapTokenSecretKey is the actual secret.

BootstrapTokenSecretPrefix is the prefix for bootstrap token names.

BootstrapTokenUsageSigningKey signals that this token should be used to sign configs as part of the bootstrap process.

ConfigMapClusterInfo defines the name for the ConfigMap where the information how to connect and trust the cluster exist.

JWSSignatureKeyPrefix defines what key prefix the JWS-signed tokens have.

KubeConfigKey defines at which key in the Data object of the ConfigMap the KubeConfig object is stored.

SecretTypeBootstrapToken is used during the automated bootstrap process (first implemented by kubeadm).