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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:

\uD83D\uDCD8 Instructions

  1. kubeadm alpha certs check-expiration

  2. kubeadm alpha certs renew all

  3. mkdir  /tmp/manifests 

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

  5. wait for few mins

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

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

  8. exit from master

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

  10. also , source .bashrc

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