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A DevOps engineer notices that the kubelet on a node is unable to register with the Kubernetes API server. The kubelet logs show 'Failed to get bootstrap CA certificate' and the node is not yet part of the cluster. What is the most likely cause?
2An administrator is tasked with setting up a new Kubernetes cluster using kubeadm. They have two nodes: one control plane and one worker. After initializing the control plane with 'kubeadm init', the worker node fails to join with the error 'error execution phase preflight: [preflight] Some fatal errors occurred: [ERROR CRI]: container runtime is not running'. What should the administrator check first?
3A team is configuring etcd for a multi-node Kubernetes cluster. They want to ensure that etcd data is encrypted at rest. Which approach should they use?
4A Kubernetes cluster is running with a single control plane node. The administrator wants to add a second control plane node for high availability. What is the first step after the new node has been provisioned with the required software?
5A DevOps engineer is designing a Kubernetes cluster for a production environment. Which of the following is a best practice for etcd deployment?
The Cluster Architecture, Installation & Configuration domain covers the key concepts tested in this area of the CKA exam blueprint published by CNCF. Courseiva provides free domain-focused practice, mock exams, missed-question review, and readiness tracking across all CKA domains — no account required.
The Courseiva CKA question bank contains 5 questions in the Cluster Architecture, Installation & Configuration domain, covering the 12% of the exam attributed to this domain in the official CNCF blueprint. Click any question to see the full explanation and answer breakdown.
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