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Certified Kubernetes Administrator Syllabus

Cluster Architecture, Installation and Configuration

Covers installing and configuring Kubernetes clusters using kubeadm, managing RBAC, cluster upgrades, and etcd backup/restore.

25%
Weight
4
Questions
25
Marks

kubeadm Cluster Operations

  • Bootstrapping a cluster with kubeadm init and kubeadm join
  • Upgrading control plane and worker nodes with kubeadm upgrade
  • Adding and removing worker nodes from the cluster
  • High-availability control plane setup concepts

RBAC and Security

  • Creating Role and ClusterRole for permissions
  • Creating RoleBinding and ClusterRoleBinding
  • Service Account creation and token management
  • RBAC debugging: kubectl auth can-i for permission verification

etcd Management

  • etcd backup using etcdctl snapshot save
  • etcd restore from snapshot
  • etcd endpoint and certificate configuration
  • etcd health check and cluster status

Workloads and Scheduling

Covers deploying and managing Pods, Deployments, DaemonSets, StatefulSets, Jobs, CronJobs, and resource management.

15%
Weight
3
Questions
15
Marks

Deployments and Workloads

  • Creating and managing Deployments, ReplicaSets, and StatefulSets
  • Rolling updates and rollbacks with kubectl rollout
  • DaemonSets for node-level workloads
  • Jobs and CronJobs for batch processing

Scheduling and Resources

  • Node affinity, pod affinity, and anti-affinity rules
  • Taints and tolerations for node scheduling control
  • Resource requests and limits: CPU and memory
  • LimitRange and ResourceQuota for namespace-level controls
  • Manual scheduling: nodeName and nodeSelector

Application Packaging and Extension (added January 2025)

  • Helm: charts, releases, values files, and template basics
  • Kustomize: bases, overlays, and patches for environment-specific config
  • Custom Resource Definitions (CRDs) for extending the Kubernetes API
  • Operators: reconciliation loops and custom controller concepts

Services and Networking

Covers Kubernetes networking, Service types, Ingress, NetworkPolicies, CoreDNS, and cluster DNS.

20%
Weight
3
Questions
20
Marks

Services

  • Service types: ClusterIP, NodePort, LoadBalancer, ExternalName
  • Endpoint management and service selectors
  • Headless services for StatefulSet DNS-based discovery

Ingress and Network Policies

  • Ingress resource configuration and routing rules
  • Ingress controllers and backend service configuration
  • NetworkPolicy for pod-to-pod traffic control
  • Ingress and Egress policy rule writing
  • Gateway API: GatewayClass, Gateway, and HTTPRoute resources (added to curriculum January 2025)

DNS and Connectivity

  • CoreDNS configuration and troubleshooting
  • Pod DNS policy: ClusterFirst, Default, None
  • Service DNS naming: service.namespace.svc.cluster.local
  • CNI plugin concepts: Calico, Flannel, Weave Net

Storage

Covers Kubernetes persistent storage including PersistentVolumes, PersistentVolumeClaims, StorageClasses, and volume types.

10%
Weight
2
Questions
10
Marks

PersistentVolumes and Claims

  • PersistentVolume (PV) creation and access modes: RWO, ROX, RWX
  • PersistentVolumeClaim (PVC) creation and binding
  • StorageClass and dynamic provisioning
  • Volume reclaim policies: Retain, Recycle, Delete
  • Mounting volumes in Pods: volumeMounts and volumes spec

Volume Types

  • emptyDir for temporary Pod storage
  • hostPath for node-level storage
  • ConfigMap and Secret as volumes
  • CSI (Container Storage Interface) driver concepts

Troubleshooting

Covers diagnosing and resolving issues with cluster components, node health, application failures, and network connectivity problems.

30%
Weight
5
Questions
30
Marks

Node and Cluster Component Issues

  • Node NotReady diagnosis: kubelet status, logs, and config
  • Troubleshooting control plane components: kube-apiserver, kube-scheduler, kube-controller-manager
  • etcd health checks and data integrity
  • systemctl and journalctl for system-level diagnostics

Application and Pod Troubleshooting

  • kubectl describe for event-based debugging
  • kubectl logs for container output examination
  • kubectl exec for in-container debugging
  • CrashLoopBackOff, OOMKilled, and ImagePullBackOff diagnosis
  • Init container and multi-container Pod debugging

Network Troubleshooting

  • Service endpoint connectivity testing
  • DNS resolution testing inside Pods
  • NetworkPolicy debugging and traffic flow verification
  • Using temporary debug Pods with network tools

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I need help understanding Cluster Architecture, Installation and Configuration

Smart Flash Cards

AI-generated flash cards that adapt to your learning progress

  • Spaced repetition system
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Timed Exams

Simulate real exam conditions with timed practice tests

  • Exam-like environment
  • Time management skills

Practice Tests

Comprehensive question bank with detailed explanations

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Mind Maps

Visual learning tools to connect and remember concepts

  • Interactive diagrams
  • Topic relationships

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Learning Progress

Cluster Architecture, Installation and Configuration 85%
Workloads and Scheduling 92%

Practice Test Scores

95%
Latest Score
Above passing threshold

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1

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2

Practice

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3

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