#!/bin/bash

# Script to setup Kubernetes Master

# colors

red='\033[0;31m'

nc='\033[0m' # No Color

green='\033[0;32m'

cyan='\033[0;36m'

orange='\033[0;33m'

# formatting

bold=$(tput bold)

normal=$(tput sgr0)

echo -e "${orange}${bold}----- Initializing Master -----${nc}${normal}"

status=$(sudo dpkg-query -W -f='${Status} ${Version}\n' kubeadm)

if [[ $status != "install ok"* ]]

then

echo -e "${red}${bold}Kubernetes not installed.${nc}${normal}"

echo -e "${green}${bold}Installing Kubernetes.....${nc}${normal}"

echo -e "${cyan}${bold}Trusting the kubernetes APT key and adding the official APT Kubernetes repository${nc}${normal}"

sudo curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

echo "deb http://apt.kubernetes.io/ kubernetes-xenial main" > /etc/apt/sources.list.d/kubernetes.list

#instaling kubeadm

kubInstallStatus=$(sudo apt-get update && apt-get install -y kubeadm)

echo -e "${green}${bold}Kuberenetes successfully installed${nc}${normal}"

echo -e "${cyan}${bold}Please perform same actions on other nodes${nc}${normal}"

fi

while true; do

read -p "Is this the master node? Yes[y/Y] or No[n/N]" yn

case $yn in

[Yy]* ) isMaster="yes"; break;;

[Nn]* ) exit;;

* ) echo "Please answer yes or no.";;

esac

done

if [ $isMaster = "yes" ]

then

wifiName=$(sudo ifconfig wlan0|grep -Po 't addr:\K[\d.]+')

echo -e "${cyan}${bold}--- Initializing kubeadm ---${nc}${normal}"

sudo kubeadm init --pod-network-cidr 10.244.0.0/16 --apiserver-advertise-address=$wifiName

echo -e "${greeb}${bold}Initialization complete${nc}${normal}"

echo -e "${cyan}${bold}-- Setting up cluster --${nc}${normal}"

sudo cp /etc/kubernetes/admin.conf $HOME/

sudo chown $(id -u):$(id -g) $HOME/admin.conf

sudo export KUBECONFIG=$HOME/admin.conf

fi

echo -e "${green}${bold}Setup Complete${nc}${normal}"

echo -e "${cyan}${bold}Please join the other nodes using the token generated above${nc}${normal}"