CKA Deep Dive: etcd Backup/Restore, CNI Plugins, and Cluster Architecture Mastery
The CKA Cluster Architecture domain (25%) and Troubleshooting domain (30%) together make up more than half the exam. This guide goes deep on kubeadm cluster setup, etcd backup/restore commands, CNI plugin troubleshooting, TLS certificate rotation, and RBAC — the topics where most CKA candidates lose the most points.
The CKA exam is performance-based: you work on live clusters, write real commands, and every flag matters. The two heaviest domains — Cluster Architecture, Installation and Configuration (25%) and Troubleshooting (30%) — together account for 55% of your score. This guide goes deep on the exact command sequences and troubleshooting methodology you need to pass both domains without hesitation.
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