CheckAndInstallKubeadm install kubeadm, skip install if it exist.

CheckAndInstallKubelet install kubelet and kubernetes-cni, skip install if they exist.

CheckAndInstallKubernetesCni install kubernetes-cni, skip install if they exist.

CheckKubeletStatus check if kubelet is healthy.

EnableKubeletService enable kubelet service.

GetDefaultClientSet return client set created by /etc/kubernetes/kubelet.conf.

GetKubernetesVersionFromCluster get kubernetes cluster version from master.

GetStaticPodTemplateFromConfigMap get static pod template from configmap.

IsValidBootstrapToken returns whether the given string is valid as a Bootstrap Token and in other words satisfies the BootstrapTokenRegexp.

RetrieveBootstrapConfig get clientcmdapi config by bootstrap token.

RunJobAndCleanup runs the job, wait for it to be complete, and delete it.

SetKubeletConfigForNode write kubelet.conf for join node.

SetKubeletService configure kubelet service.

SetKubeletUnitConfig configure kubelet startup parameters.

TokenUser defines token user.

BootstrapTokenRegexp is a compiled regular expression of TokenRegexpString.

PropagationPolicy defines the propagation policy used when deleting a resource.