Kubernetes Certification Study Repository

Personal repository for Kubernetes certification learning path: CKAD ✅, CKA 🎯, CKS 📚

01_installation_configuration

Automated scripts for Kubernetes control plane setup and teardown on Ubuntu/Debian.

Scripts

install_cp.sh - Install Kubernetes control plane with containerd and Cilium CNI

chmod +x install_cp.sh
./install_cp.sh

uninstall_cp.sh - Complete removal of Kubernetes and all components

chmod +x uninstall_cp.sh
./uninstall_cp.sh

install_worker.sh - Install Kubernetes worker node

chmod +x install_worker.sh

# Method 1: Command line arguments
./install_worker.sh <CONTROL_PLANE_IP>  <CONTROL_PLANE_HOSTNAME>

# Method 2: Environment variables
CONTROL_PLANE_IP=<CONTROL_PLANE_IP> CONTROL_PLANE_HOSTNAME=<CONTROL_PLANE_HOSTNAME> ./install_worker.sh

# Method 3: Interactive (will prompt for IP and hostname)
./install_worker.sh

⚠️ Warning

These scripts completely wipe Kubernetes clusters. Use only on test systems.

Features

• Dynamic version detection
• System requirements validation (2 CPU, 2GB RAM)
• Automatic cleanup of previous installations
• Multi-shell kubectl completion

Why These Scripts?

kubeadm reset doesn't clean everything:

• CNI configuration remains in /etc/cni/net.d
• Port 6443 stays occupied
• Container images persist
• $HOME/.kube remains

The uninstall script handles complete cleanup including Cilium removal.