When Kubernetes certificates expire, the cluster becomes unusable; this guide explains how to check certificate expiration, renew the affected certificates with kubeadm, verify the updates, and restart control‑plane components to bring the cluster back online, including HA considerations.
This guide walks you through the essential steps, precautions, and commands needed to safely drain nodes, back up critical resources, shut down a Kubernetes cluster, and reliably bring it back online while avoiding common pitfalls.
This guide walks you through the essential steps, commands, and precautions for safely draining nodes, backing up applications, CRDs, and etcd, then shutting down and later restarting a Kubernetes cluster while avoiding common pitfalls.
This article explains how to perform zero‑downtime updates on a Kubernetes cluster by using native tools such as pod lifecycle hooks, graceful termination, and PodDisruptionBudgets, guiding you through a step‑by‑step series that covers draining nodes, graceful pod shutdown, and avoiding service interruptions.
