--- /dev/null
+#!/bin/bash
+
+# Capture start time
+start_time=$(date +%s)
+
+workspace=$(pwd)
+
+# Define default values
+DEFAULT_KUBEVERSION="1.32.3-1.1"
+DEFAULT_HELMVERSION="3.14.2"
+DEFAULT_POD_CIDR="10.244.0.0/16"
+
+# Parse command-line arguments
+IP_ADDR=""
+KUBEVERSION="$DEFAULT_KUBEVERSION"
+HELMVERSION="$DEFAULT_HELMVERSION"
+POD_CIDR="$DEFAULT_POD_CIDR"
+
+while [[ "$#" -gt 0 ]]; do
+ case "$1" in
+ --ip-address)
+ IP_ADDR="$2"
+ shift 2
+ ;;
+ --kube-version)
+ KUBEVERSION="$2"
+ shift 2
+ ;;
+ --helm-version)
+ HELMVERSION="$2"
+ shift 2
+ ;;
+ --pod-cidr)
+ POD_CIDR="$2"
+ shift 2
+ ;;
+ *)
+ echo "Unknown parameter: $1"
+ exit 1
+ ;;
+ esac
+done
+
+command_exists() {
+ command -v "$1" >/dev/null 2>&1
+}
+
+# Function to check internet connectivity
+check_internet() {
+ echo "Checking internet connection..."
+ if ping -q -c 1 -W 1 google.com >/dev/null 2>&1; then
+ echo "Internet connection is active."
+ else
+ echo "Error: No internet connection. Please ensure your system has access to the internet."
+ exit 1
+ fi
+}
+
+# Function to check if curl is installed and install if not
+check_and_install_curl() {
+ echo "Checking if curl is installed..."
+ if ! command_exists curl; then
+ echo "curl is not installed. Installing now..."
+ apt update
+ apt install -y curl
+ if command_exists curl; then
+ echo "curl has been successfully installed."
+ else
+ echo "Error: Failed to install curl. Please check your internet connection and try again."
+ exit 1
+ fi
+ else
+ echo "curl is already installed."
+ fi
+}
+
+# Function to check for existing Kubernetes cluster and prompt for removal
+check_existing_cluster() {
+ read -p "This will attempt to remove any existing cluster. Do you want to proceed? (y/N): " remove_cluster
+ if [[ "$remove_cluster" != "y" && "$remove_cluster" != "Y" ]]; then
+ echo "Kubernetes cluster removal skipped by user. Exiting script."
+ exit 0
+ fi
+
+ echo "Attempting to remove existing Kubernetes components..."
+
+ # Attempt kubeadm reset if kubeadm is found
+ if command_exists kubeadm; then
+ echo "Running 'kubeadm reset'..."
+ if ! kubeadm reset -f; then
+ echo "Warning: 'kubeadm reset' failed or encountered issues. Proceeding with other cleanup steps."
+ fi
+ else
+ echo "Info: 'kubeadm' command not found. Skipping 'kubeadm reset'."
+ fi
+
+ # Attempt to purge Kubernetes packages
+ echo "Purging Kubernetes packages..."
+ if ! apt-get -y purge kubeadm kubectl kubelet kubernetes-cni kube* containerd; then
+ echo "Warning: Failed to purge all Kubernetes packages. This might be due to them not being fully installed or other issues."
+ fi
+
+ # Attempt autoremove for leftover dependencies
+ echo "Running 'apt-get autoremove'..."
+ if ! apt-get -y autoremove; then
+ echo "Warning: 'apt-get autoremove' failed or encountered issues."
+ fi
+
+ # Remove kubeconfig and other user-specific Kubernetes files
+ if [ -d "$HOME/.kube" ]; then
+ echo "Removing user's .kube directory..."
+ if ! rm -rf "$HOME/.kube"; then
+ echo "Warning: Failed to remove '$HOME/.kube' directory."
+ fi
+ else
+ echo "Info: '$HOME/.kube' directory not found. Skipping removal."
+ fi
+
+ echo "Existing cluster cleanup attempt completed."
+}
+
+# Function to disable swap
+disable_swap() {
+ echo "Disabling swap..."
+ swapon --show > /dev/null 2>&1
+ if [ $? -eq 0 ]; then
+ swapoff -a
+ rm /swapfile
+ sed -i 's/\/swap.img/#\/swap.img/' /etc/fstab
+ else
+ echo "No swap is currently enabled."
+ fi
+}
+
+# Function to check Ubuntu version
+check_ubuntu_version() {
+ os_version=$(lsb_release -rs)
+ if [ "$os_version" != "22.04" ] && [ "$os_version" != "24.04" ]; then
+ echo "Error: Unsupported Ubuntu version. This script supports 22.04 and 24.04 only."
+ exit 1
+ fi
+}
+
+# Function to handle errors
+handle_error() {
+ echo "Error occurred at step $1. Exiting..."
+ exit 1
+}
+
+# Function to check if namespace exists
+check_namespace_not_exists() {
+ local namespace="$1"
+ if kubectl get namespace "$namespace" &> /dev/null; then
+ echo "Namespace '$namespace' exists. Skipping steps..."
+ return 0 # Namespace exists
+ else
+ echo "Namespace '$namespace' does not exist."
+ return 1 # Namespace does not exist
+ fi
+}
+
+
+# Check Ubuntu version
+echo "Checking Ubuntu version..."
+check_ubuntu_version
+
+# Check internet connection
+check_internet
+
+# Check and install curl if not present
+check_and_install_curl
+
+# Check for existing Kubernetes cluster and prompt for removal
+check_existing_cluster
+
+# Disable swap
+disable_swap
+
+# Script for Installing Docker,Kubernetes and Helm
+
+wait_for_pods_running () {
+ NS="$2"
+ CMD="kubectl get pods --all-namespaces "
+ if [ "$NS" != "all-namespaces" ]; then
+ CMD="kubectl get pods -n $2 "
+ fi
+ KEYWORD="Running"
+ if [ "$#" == "3" ]; then
+ KEYWORD="${3}.*Running"
+ fi
+
+ CMD2="$CMD | grep \"$KEYWORD\" | wc -l"
+ NUMPODS=$(eval "$CMD2")
+ echo "waiting for $NUMPODS/$1 pods running in namespace [$NS] with keyword [$KEYWORD]"
+ while [ $NUMPODS -lt $1 ]; do
+ sleep 5
+ NUMPODS=$(eval "$CMD2")
+ echo "> waiting for $NUMPODS/$1 pods running in namespace [$NS] with keyword [$KEYWORD]"
+ done
+}
+
+# Step x: Edit /etc/sysctl.conf to add fs.inotify.max_user_watches and fs.inotify.max_user_instances. This shoudl be done before containerd installation
+echo "==========================================================="
+echo " Preping the ENV: Editing /etc/sysctl.conf..."
+echo "==========================================================="
+
+bash -c 'echo "fs.inotify.max_user_watches=524288" >> /etc/sysctl.conf'
+bash -c 'echo "fs.inotify.max_user_instances=512" >> /etc/sysctl.conf'
+bash -c 'echo "fs.inotify.max_queued_events=16384" >> /etc/sysctl.conf'
+bash -c 'echo "vm.max_map_count=262144" >> /etc/sysctl.conf'
+
+# Apply sysctl params without reboot
+sysctl --system
+
+# Installing containerd
+modprobe overlay
+modprobe br_netfilter
+
+cat <<EOF | tee /etc/modules-load.d/containerd.conf
+overlay
+br_netfilter
+EOF
+
+# sysctl params required by setup, params persist across reboots
+cat <<EOF | tee /etc/sysctl.d/k8s.conf
+net.ipv4.ip_forward = 1
+EOF
+
+# Apply sysctl params without reboot
+sysctl --system
+
+#V erify that net.ipv4.ip_forward is set to 1 with:
+sysctl net.ipv4.ip_forward
+
+echo "****************************************************************************************************************"
+echo " Installing Containerd "
+echo "****************************************************************************************************************"
+
+sysctl --system
+apt-get update
+apt-get install -y containerd
+mkdir -p /etc/containerd
+containerd config default | tee /etc/containerd/config.toml
+sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
+systemctl restart containerd
+
+# Helm Installation
+echo "****************************************************************************************************************"
+echo " Installing Helm "
+echo "****************************************************************************************************************"
+wget https://get.helm.sh/helm-v${HELMVERSION}-linux-amd64.tar.gz
+tar -xvf helm-v${HELMVERSION}-linux-amd64.tar.gz
+mv linux-amd64/helm /usr/local/bin/helm
+helm version
+rm helm-v${HELMVERSION}-linux-amd64.tar.gz
+
+
+# Installing Kubernetes Packages
+echo "***************************************************************************************************************"
+echo " Installing Kubernetes "
+echo "***************************************************************************************************************"
+
+rm /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+mkdir -p /etc/apt/keyrings
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.32/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.32/deb/ /' | tee /etc/apt/sources.list.d/kubernetes.list
+apt update
+
+
+apt-cache policy kubelet | grep 'Installed: (none)' -A 1000 | grep 'Candidate:' | awk '{print $2}'
+
+# Installing Kubectl, Kubeadm and kubelet
+
+apt install -y kubeadm=${KUBEVERSION} kubelet=${KUBEVERSION} kubectl=${KUBEVERSION}
+kubeadm init --apiserver-advertise-address=${IP_ADDR} --pod-network-cidr=${POD_CIDR} --v=5
+
+mkdir -p $HOME/.kube
+cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
+chown $(id -u):$(id -g) $HOME/.kube/config
+export KUBECONFIG=/etc/kubernetes/admin.conf
+
+kubectl taint nodes --all node-role.kubernetes.io/control-plane-
+kubectl taint nodes --all node.kubernetes.io/not-ready-
+
+kubectl get pods -A
+kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.30.1/manifests/calico.yaml
+
+wait_for_pods_running 7 kube-system
+
+echo "***************************************************************************************************************"
+
+kubectl get pods -A
+
+echo "***************************************************************************************************************"
Code Review / it / dep.git / commitdiff