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Certified Kubernetes Administrator

About CKA

CKA Badge Reference: https://www.credly.com/org/the-linux-foundation/badge/cka-certified-kubernetes-administrator

The purpose of the Certified Kubernetes Administrator (CKA) program is to provide assurance that CKAs have the skills, knowledge, and competency to perform the responsibilities of Kubernetes administrators. Reference: CNCF-CKA

Domains & Competencies

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

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

Cluster Architecture, Installation & Configuration 25%

  • 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

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

To learn more about CKA, visit: https://training.linuxfoundation.org/certification/certified-kubernetes-administrator-cka/

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