Kubernetes - Kubeadm

Configs

Get admin kube config file from a master:

kubectl --kubeconfig=/etc/kubernetes/admin.conf get node

Certificates

Check certs expiration dates:

kubeadm alpha certs check-expiration

Renew a certificate:

kubeadm alpha certs renew {cert}
# Ex: kubeadm alpha certs renew apiserver-etcd-client