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Certified Kubernetes Administrator (CKA)  


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Length: 5 day (40 hours)

 

This course is an intensive deep dive into the "Ops" side of Kubernetes. You will learn to move beyond just running containers to architecting the infrastructure that supports them. The training covers cluster lifecycle management—from bootstraping with kubeadm to maintaining high availability and troubleshooting catastrophic failures.

By 2026, the curriculum has matured to include modern networking standards like the Gateway API and a heavy emphasis on JSONPath filtering for administrative efficiency

There are no formal certifications required to sit for the CKA, but the following technical foundations are essential:

  • Linux Proficiency: Expert-level comfort with the Linux CLI (moving files, editing with vim/nano, and understanding systemd services).
  • Container Fundamentals: Understanding of container runtimes (containerd/CRI-O) and how images are built and stored.
  • Networking Basics: Solid grasp of IP addresses, CIDR blocks, DNS, and load balancing.
  • YAML Literacy: Since everything in Kubernetes is defined in YAML, you must be comfortable with its indentation rules and structure.


Systems Administrators: Traditional admins transitioning to cloud-native infrastructure.

DevOps & Site Reliability Engineers (SREs): Tasked with automating and stabilizing large-scale clusters.

Cloud Architects: Designing containerized solutions across multi-cloud or hybrid environments.

IT Professionals: Aiming to become a "Kubestronaut" (earning all 5 CNCF Kubernetes certifications).

Course objectivesCourse outlines

Course objectives

After completing this course, students will be able to:

    • Build & Manage Clusters: Install production-grade clusters using kubeadm and manage their lifecycle (upgrades/maintenance).
    • Ensure High Availability: Implement and configure a highly available control plane and etcd backend.
    • Master Networking: Configure Pod-to-Pod connectivity, Ingress controllers, and the modern Gateway API.
    • Implement Storage: Manage Persistent Volumes (PVs), Claims (PVCs), and dynamic StorageClasses.
    • Secure the Cluster: Configure Role-Based Access Control (RBAC) and define Network Policies to isolate traffic.
    • Troubleshoot Under Pressure: Rapidly diagnose and fix failures in cluster components, networking, and application scheduling.

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Course outlines

    • Domain 1: Cluster Architecture, Installation & Configuration
      • Role-Based Access Control (RBAC): Creating Users, Roles, and Bindings.
      • Kubeadm Bootstrapping: Creating a cluster from scratch.
      • Etcd Management: Backing up and restoring the cluster’s state.
      • Upgrades: Performing zero-downtime version upgrades on Masters and Nodes.
    • Domain 2: Workloads & Scheduling
      • Self-Healing: Designing robust Deployments that automatically restart failed containers.
      • Rolling Updates: Managing application versions without downtime.
      • Advanced Scheduling: Using Taints, Tolerations, and Node Affinity.
      • Config & Secrets: Using ConfigMaps and Secrets for application configuration.
    • Domain 3: Services & Networking
      • Connectivity: Understanding CNI plugins and Pod-to-Pod communication.
      • Services: ClusterIP, NodePort, and LoadBalancer types.
      • Ingress & Gateway API: Exposing applications to the outside world.
      • CoreDNS: Managing internal service discovery.
    • Domain 4: Storage 
      • Volume Types: Configuring HostPath, NFS, and Cloud-based storage.
      • Dynamic Provisioning: Automating storage allocation with StorageClasses.
      • Persistence: Ensuring data survives Pod restarts and node failures.
    • Domain 5: Troubleshooting – The Critical Section
      • Cluster Failures: Fixing a broken kube-apiserver or kubelet.
      • Networking Debugging: Finding why a Service cannot reach a Pod.
      • Logging: Using kubectl logs and checking system logs with journalctl.
      • App Failure: Analyzing CrashLoopBackOff and ImagePullBackOff errors.


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