Renew certificates for kubernetes once expired

Certificates for Kubernetes cluster as part of SandboxV2 installation gets expired every 1 year..

So the same needs to be reknewed following below mentioned steps:

 Instructions

1. Login to the master node

2. kubeadm alpha certs check-expiration

3. kubeadm alpha certs renew all

4. mkdir  /tmp/manifests 

5. mv /etc/kubernetes/manifests/* /tmp/manifests/

6. wait for few mins

7. mv /tmp/manifests/* /etc/kubernetes/manifests/

8. cp /etc/kubernetes/admin.conf ~/.kube/config

9. exit from master

10. from console run scp root@mzmaster:/root/.kube/config ~/.kube/mzcluster.config

11. also , source .bashrc

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