k8s Setup Script

k8s_setup_ubuntu.sh

#! /usr/bin/bash
# Setup new server with microk8s, kubectl, and helm

set -euo pipefail

# Get current user
USER=$(who | awk '{ print $1}')

# Get current OS, script currently uses snap which should be available
# by default on Ubuntu
OS=$(awk -F= '/^NAME/{print $2}' /etc/os-release | xargs)

# Check if microk8s is installed
INSTALLED=$(which microk8s)

if [[ -n "$INSTALLED" ]]; then
    echo "Microk8s already installed..."
    exit
fi

if [[ "$OS" != "Ubuntu" ]]; then
    echo "Unsupported OS..."
    exit
fi


# install kubectl and microk8
sudo snap install kubectl --classic
sudo snap install microk8s --classic

# add user to config
sudo usermod -a -G microk8s $USER
sudo chown -f -R $USER ~/.kube

# restart group
newgrp microk8s

# output
microk8s status --wait-ready

# copy config for system kubectl
microk8s config > ~/.kube/config
chmod go-r ~/.kube/config

# Setup helm
sudo snap install helm --classic

# alias
echo "alias k='kubectl'" >> ~/.bashrc