Solution Backup and Restore

Source: https://notes.kodekloud.com/docs/CKA-Certification-Course-Certified-Kubernetes-Administrator/Cluster-Maintenance/Solution-Backup-and-Restore/page

Summary: Learn to back up and restore an etcd cluster in Kubernetes, including verification, snapshot creation, and restoration procedures.

Related Notes

• KodeKloud CKA Index
• CKA Index
• Section Overview
• Previous: OS Upgrades
• Next: Solution Backup and Restore 2

Key Notes

• In this lesson, you will learn how to back up and restore an etcd cluster running on a Kubernetes control plane. We begin by verifying the existing deployments, inspecting the etcd container setup, and then proceed with the backup and restore procedures.
• 1. Checking the Current Deployments
• Assuming a running Kubernetes cluster with two applications deployed (“red” and “blue”), first confirm that the deployments exist:
• root@controlplane
• ~
• ⟶
• 3/3
• 2/2
• 2. Verifying the ETCD Version and Pod Details
• To identify the version of etcd and verify pod details, locate the etcd pod in the kube-system namespace. Typically configured as a static pod, you can review its description to inspect container details and command-line parameters.
• For example, examining the etcd container shows:
• Status:
• IP:
• IPs:
• By:
• Node/controlplane
• Containers:
• etcd:
• ID:
• docker://5930818c18aacf4b00d3eb301cec4427e88249a2ab5291743f05bfa4f5dbf4b7
• Image:
• k8s.gcr.io/etcd:3.5.1-0
• docker-pullable://k8s.gcr.io/etcd@sha256:64b9ea357325d5db9fa723dcf503b5a449177b17ac263
• Port: