Certified Kubernetes Administrator v1.23

• https://github.com/cncf/curriculum/blob/master/CKA_Curriculum_v1.23.pdf

25% - Cluster Architecture, Installation & Configuration

• Manage role based access control (RBAC)
• Use kubeadm to install a basic cluster
• Manage a highly-available Kubernetes cluster
• Provision underlying infrastructure to deploy a Kubernetes cluster
• Perform a version upgrade on a Kubernetes cluster using kubeadm
• Implement etcd backup and restore

15% - Workloads & Scheduling

• Understand deployments and how to perform rolling update and rollbacks
• Use ConfigMaps and Secrets to configure applications
• Know how to scale applications
• Understand the primitives used to create robust, self-healing, application deployments
• Understand how resource limits can affect Pod scheduling
• Awareness of manifest management and common templating tools

20% - Service & Networking

• Understand host networking configuration on the cluster nodes
• Understand connectivity between Pods
• Understand ClusterIP, NodePort, LoadBalancer service types and endpoints
• Know how to use Ingress controllers and Ingress resources
• Know how to configure and use CoreDNS
• Choose an appropriate container network interface (CNI) plugin

10% - Storage

• Understand storage classes, persistent volumes
• Understand volume mode, access modes and reclaim policies for volumes
• Understand persistent volume claims primitive
• Know how to configure applications with persistent storage

30% - Troubleshooting

• Evaluate cluster and node logging (kubectl logs)
• Understand how to monitor applications
• Manage container stdout & stderr logs
• Troubleshoot application failure
• Troubleshoot cluster component failure
• Troubleshoot networking

See also

• CKA: v1.28: API, Namespace, Pods, secrets, Services, deployments, nodes, Volumes, Ingress, CKS
• Kubernetes changelog