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Last updated Jan 3, 2021

As part of my goal to obtain the Certified Kubernetes Administrator (CKA) certification, I went through the Kubernetes documentation to find the specific links that map to the domain knowledge objectives for the v1.19 exam.

Cluster Architecture, Installation & Configuration – 25%

• Manage role based access control (RBAC)
• Use Kubeadm to install a basic cluster | Blogs: Control Plane Node | Node
• 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 | Blog Post

Workloads & Scheduling – 15%

• 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

Services & Networking – 20% 

• 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 plugin

Storage – 10%

• 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

Troubleshooting – 30%

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