DVO-400 Advanced ⏱ 8 weeks

Certified Kubernetes Administrator (CKA)

Master Kubernetes administration and pass the CKA. Exam-technique focused: kubeadm clusters, etcd backup/restore, upgrades, RBAC, networking, storage and deep troubleshooting — all hands-on, all against the clock.

Prerequisites: DVO-201 Docker & Kubernetes

Syllabus

Module 1 — Cluster architecture, installation & configuration

  • Control plane components in depth
  • kubeadm cluster install (multi-node)
  • Highly-available control planes
  • etcd backup and restore
  • Cluster upgrades with kubeadm
  • RBAC: roles, bindings, service accounts

Module 2 — Workloads & scheduling

  • Deployments, rollouts and rollbacks
  • ConfigMaps and Secrets
  • Scaling and autoscaling
  • Pod scheduling: nodeSelector, affinity
  • Taints, tolerations and priority
  • Static pods and DaemonSets

Module 3 — Services & networking

  • Service types and endpoints
  • Gateway API and Ingress controllers
  • CoreDNS configuration and debugging
  • CNI plugins and pod networking
  • NetworkPolicies in depth

Module 4 — Storage

  • PersistentVolumes and claims
  • StorageClasses and dynamic provisioning
  • Access modes and reclaim policies
  • Expanding and migrating volumes

Module 5 — Troubleshooting (the big one)

  • Cluster component failures
  • Node failures: kubelet, runtime
  • Application failure patterns
  • Networking and DNS troubleshooting
  • Logging and monitoring plumbing
  • Exam strategy: speed, aliases, triage