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gintsgints/Kube_restore.md

Last active August 13, 2019 08:53
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Kube_restore.md

How to restore kubernetes after certificate expire

Based on - https://stackoverflow.com/questions/56320930/renew-kubernetes-pki-after-expired/56334732#56334732

$ cd /etc/kubernetes/pki/
$ mv {apiserver.crt,apiserver-etcd-client.key,apiserver-kubelet-client.crt,front-proxy-ca.crt,front-proxy-client.crt,front-proxy-client.key,front-proxy-ca.key,apiserver-kubelet-client.key,apiserver.key,apiserver-etcd-client.crt} ~/
$ kubeadm init phase certs all --apiserver-advertise-address <IP>
$ cd /etc/kubernetes/
$ mv {admin.conf,controller-manager.conf,mv kubelet.conf,scheduler.conf} ~/
$ kubeadm init phase kubeconfig all
$ reboot

After reboot:

$ cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
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