Certified Kubernetes Administrator (CKA) Preparation

• Introduction to Kubernetes
  
  • Understanding containerization
  • Kubernetes architecture
  • Kubernetes components and their responsibilities
  
  
• Installing Kubernetes
  
  • Kubernetes installation options
  • Installing Kubernetes with kubeadm
  
  
• Kubernetes Pods
  
  • What are Pods?
  • Pod lifecycle management
  • Pod design and best practices
  
  
• Kubernetes Deployments
  
  • Understanding Deployments
  • Managing Deployments
  • Rolling updates and rollbacks
  
  
• Kubernetes Services
  
  • What are Services?
  • Service types and their use cases
  • Service discovery and load balancing
  
  
• Kubernetes Storage
  
  • Understanding storage in Kubernetes
  • Persistent Volumes and Persistent Volume Claims
  • Storage Classes and dynamic provisioning
  
  
• Kubernetes Configuration
  
  • Understanding Kubernetes ConfigMaps
  • Managing ConfigMaps and Secrets
  • Using environment variables in Kubernetes
  
  
• Kubernetes Security
  
  • Security best practices in Kubernetes
  • Kubernetes RBAC
  • Network policies
  
  
• Kubernetes Networking
  
  • Kubernetes networking basics
  • Pod-to-Pod communication
  • Services and networking
  
  
• Kubernetes Troubleshooting
  
  • Troubleshooting Kubernetes components
  • Debugging Pods and Services
  • Kubernetes logs and events
  
  
• Kubernetes API Server
  
  • Understanding the Kubernetes API server
  • API groups and versions
  • API access control and authentication
  
  
• Kubernetes Custom Resources
  
  • Custom Resource Definitions (CRDs)
  • Creating and managing Custom Resources
  
  
• Kubernetes Operators
  
  • Introduction to Operators
  • Operator Framework and SDKs
  • Creating and managing Operators
  
  
• Advanced Kubernetes Networking
  
  • Ingress controllers and Ingress resources
  • Load balancing with Kubernetes
  • Network policies and advanced networking concepts
    
    
    
    
  
  

Typical Exam Questions

• Create a Deployment with three replicas named nginx-deployment using the nginx container image and expose it as a Service named nginx-service on port 80.
• Scale the nginx-deployment to five replicas using the kubectl command.
• Create a PersistentVolumeClaim named my-pvc with a storage capacity of 10Gi and access mode ReadWriteOnce.
• Configure a Pod to run two containers, nginx and busybox, and set the nginx container to use a ConfigMap named nginx-config.
• Troubleshoot a failed Pod by examining its logs and identifying the cause of the failure.
• Secure a Kubernetes cluster by configuring Role-Based Access Control (RBAC) to grant a user specific permissions to perform certain actions.
• Create a Kubernetes CronJob that runs a batch job every five minutes and writes output to a log file.
• Create a DaemonSet that ensures that one instance of a Pod is running on each node in the cluster.