Add common script.

scripts/0-common.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+
+
+cat << "EOF"
+       _                          _   _             _                
+      (_)                        (_) | |           | |               
+       _    __ _    __ _   _ __   _  | |_        __| |   ___  __   __
+      | |  / _` |  / _` | | '__| | | | __|      / _` |  / _ \ \ \ / /
+      | | | (_| | | (_| | | |    | | | |_   _  | (_| | |  __/  \ V / 
+      | |  \__,_|  \__, | |_|    |_|  \__| (_)  \__,_|  \___|   \_/  
+     _/ |           __/ |                                            
+    |__/           |___/                                             
+                                                                      
+    Kubernetes Setup Script for All Nodes (including Master Node)
+EOF
+
+
+# Set Kubernetes version
+# K8S_VERSION="1.30"
+
+sudo mkdir -p /etc/apt/keyrings
+
+
+# Update package index and install dependencies
+sudo apt-get update -y
+sudo apt-get install -y apt-transport-https ca-certificates curl gnupg lsb-release
+
+# Disable swap
+sudo swapoff -a
+sudo sed -i '/ swap / s/^/#/' /etc/fstab
+
+# Configure kernel parameters
+cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
+overlay
+br_netfilter
+EOF
+
+sudo modprobe overlay
+sudo modprobe br_netfilter
+
+cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
+net.bridge.bridge-nf-call-iptables = 1
+net.ipv4.ip_forward = 1
+net.bridge.bridge-nf-call-ip6tables = 1
+EOF
+
+sudo sysctl --system
+
+# Add Kubernetes apt repository
+
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.30/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+sudo chmod 644 /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+
+echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.30/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
+sudo chmod 644 /etc/apt/sources.list.d/kubernetes.list 
+
+
+# Install kubeadm, kubelet, and kubectl
+sudo apt-get update -y
+sudo apt-get install -y kubelet kubeadm kubectl
+sudo apt-get update -y
+sudo apt-mark hold kubelet kubeadm kubectl