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Challenge, Medium, on Kubernetes, Security

CKA Practice: Renew Expiring Control Plane Certificates

by Shiva Swaroop N K

kubectl is dead: the kube-apiserver certificate expired and the control plane is down, while the workload quietly keeps serving. Diagnose the expiry offline, renew the certificates, bring the control plane back, and prove the cluster recovered.

#cka #kubeadm #certificates