Certified Kubernetes Administrator

CKA was created by The Linux Foundation and the Cloud Native Computing Foundation (CNCF) as a part of their ongoing effort to help develop the Kubernetes ecosystem. The exam is an online, proctored, performance-based test that requires solving multiple tasks from a command line running Kubernetes. A certified K8s administrator has demonstrated the ability to do basic installation as well as configuring and managing production-grade Kubernetes clusters. They will have an understanding of key concepts such as Kubernetes networking, storage, security, maintenance, logging and monitoring, application lifecycle, troubleshooting, API object primitives and the ability to establish basic use-cases for end users.
 

This certification is for Kubernetes administrators, cloud administrators and other IT professionals who manage Kubernetes instances.
 

There are no pre-requisites for this exam.
 

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