Local Minikube cluster using QEMU hypervisor

README.md

Local Minikube cluster using QEMU hypervisor

Script for installing minikube cluster using QEMU/KVM hypervisor.

Supported OS

• Ubuntu 18.04 (tested)
• Debian 10 (not yet tested)
• CentOS 7

Prerequisites:

First, install QEMU/Libvirt stack and reboot:

$ sudo apt install qemu-kvm libvirt-bin
$ sudo reboot

Installation

$ ./install-minikube-kvm.sh

This script will install:

• docker-machine (+ bash completions)
• minikube
• kubectl (+ bash completions)
• docker-machine-driver-kvm2

References

How to run Minikube on KVM

install-minikube-kvm.sh

#!/usr/bin/env bash
###################################################################
# Script Name	: install-minikube-kvm.sh
# Description	: Install minikube and docker-machine with KVM driver
# Args          :
# Author       	: kiba
# Email         : [email protected]
###################################################################

DISTR=$(lsb_release -is)
CODENAME=$(lsb_release -cs)
DOCKER_MACHINE_LATEST="$(curl -s https://api.github.com/repos/docker/machine/releases/latest | grep "browser_download_url.*Linux-x86_64" | cut -d : -f 2,3 | tr -d \")"
MINIKUBE_LATEST="$(curl -s https://api.github.com/repos/kubernetes/minikube/releases/latest | grep "browser_download_url.*deb" | cut -d : -f 2,3 | tr -d \")"

# format output for shell commands
echocode() {
  echo -e "\n\t\$ $@\n"
}

# 0. check dependencies
virsh domcapabilities --virttype kvm >/dev/null 2>&1
if [ $? -ne 0 ]
then
  echo "FATAL: please install qemu-kvm and libvirt-bin first."
  echocode sudo apt install qemu-kvm libvirt-bin
  echo "And reboot."
  exit 1
fi

echo -e "## Start installation ##\n"

# 1. install docker-machine
if [ ! -f /usr/local/bin/docker-machine ]
then
  curl -L $DOCKER_MACHINE_LATEST >/tmp/docker-machine &&
  sudo mv /tmp/docker-machine /usr/local/bin/docker-machine &&
  sudo chmod +x /usr/local/bin/docker-machine
fi

# 1a. install docker-machine completions
if [ ! -f /etc/bash_completion.d/docker-machine.bash ]
then
  base=https://raw.githubusercontent.com/docker/machine/master
  for i in docker-machine-prompt.bash docker-machine-wrapper.bash docker-machine.bash
  do
    sudo wget "$base/contrib/completion/bash/${i}" -P /etc/bash_completion.d
  done
fi

echo "To enable the docker-machine shell prompt, add \$(__docker_machine_ps1) to your PS1 setting in ~/.bashrc."
echo "PS1='[\u@\h \W\$(__docker_machine_ps1)]\\\$ '"
echo ""

# 2 install minikube
if [[ "$(which minikube | wc -l)" == "0" ]]
then
  if [[ $DISTR =~ (Debian|Ubuntu) ]]
  then
    wget $MINIKUBE_LATEST && \
    sudo dpkg -i "${MINIKUBE_LATEST##*/}" && \
    rm -f "${MINIKUBE_LATEST##*/}"
  else
    wget https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
    chmod +x minikube-linux-amd64
    sudo mv minikube-linux-amd64 /usr/local/bin/minikube
  fi
fi

# 2a. show ver
minikube version
echo ""

# 3. install kubectl
if [[ "$(which kubectl | wc -l)" == "0" ]]
then
  if [[ $DISTR =~ (Debian|Ubuntu) ]]
  then
    # no bionic repo nowadays
    [[ "$CODENAME" == "bionic" ]] && CODENAME="xenial"

    sudo apt-get update && sudo apt-get install -y apt-transport-https
    curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
    echo "deb https://apt.kubernetes.io/ kubernetes-${CODENAME} main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
    sudo apt-get update
    sudo apt-get install -y kubectl
  else
    curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
    chmod +x kubectl
    sudo mv kubectl  /usr/local/bin/
  fi
fi

# 3a. show ver
kubectl version -o yaml
echo ""

# 3b. install kubectl completion
source <(kubectl completion bash)
if [ ! -s /etc/bash_completion.d/kubectl ]
then
  kubectl completion bash | sudo tee -a /etc/bash_completion.d/kubectl >/dev/null
fi

# 4. install docker-machine KVM driver
if [ ! -f /usr/local/bin/docker-machine-driver-kvm2 ]
then
  curl -LO https://storage.googleapis.com/minikube/releases/latest/docker-machine-driver-kvm2
  chmod +x docker-machine-driver-kvm2
  sudo mv docker-machine-driver-kvm2 /usr/local/bin/
fi

# 5. Finish
echo "Done! You can now start your cluster: "
echocode minikube start --vm-driver kvm2
echo "or set kvm driver as default:"
echocode minikube config set vm-driver kvm2