Inception of Things

This repository gathers three little projects using Vagrant, Kubernetes and more.

Prerequisites
Part 1: Automate a simple k3s cluster with Vagrant
Part 2
Part 3

Prerequisites

Before proceeding with the setup, ensure you have the following prerequisites on your host machine:

Vagrant installed, and
VirtualBox (or any other Vagrant provider) installed for virtualization capabilities.

Part 1: Automate a simple K3s cluster with Vagrant

The first project p1 involves automating a 2-machine cluster using k3s and vagrant.

K3s is a lightweight virtual machine-based Kubernetes distribution tool made for IoT and CI/CD environments.

Setting up the Virtual Machines

In part1, we define two boxes: a server and a worker.Vagrant helps us automate the creation and provisioning of multiple virtual machines from one configuration file: the Vagrantfile. Both boxes run the latest stable Ubuntu Operating System and run on 1 CPU and 1024 MB of RAM. Their hostnames and IP addresses are defined at the top of the file.

SERVER_IP = "192.168.56.110"
WORKER_IP = "192.168.56.111"
SERVER_NAME = "corozcoS"
WORKER_NAME = "corozcoSW"
TOKEN_FILE = "/vagrant/node-token"

Vagrant.configure("2") do |config|

  config.vm.box = "ubuntu/focal64"
  config.vm.provider "virtualbox" do |vb|
    vb.memory = 1024
    vb.cpus = 1
  end

  config.vm.define "#{SERVER_NAME}" do |control|
    control.vm.hostname = "#{SERVER_NAME}"
    control.vm.network "private_network", bridge: "enp0s8", ip: "#{SERVER_IP}"
  end

  config.vm.define "#{WORKER_NAME}" do |control|
    control.vm.hostname = "#{WORKER_NAME}"
    control.vm.network "private_network", bridge: "enp0s8", ip: "#{WORKER_IP}"
  end
end

Deploying the k3s cluster

Once our machines are up and running, we can configure the k3s cluster.

Server node

# Initialize a new cluster using etcd specifying the node's advertising address 
# Copy the node-token to the host machine
$serverscript = <<-SCRIPT
apt-get update
curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--cluster-init --node-ip #{SERVER_IP}" sh -
cp /var/lib/rancher/k3s/server/node-token /vagrant
SCRIPT

# We run this script on the server machine
control.vm.provision "shell", inline: $serverscript

# Initialize a new cluster using etcd specifying the node's advertising address 
# Copy the node-token to the host machine
$serverscript = <<-SCRIPT
apt-get update
curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--cluster-init --node-ip #{SERVER_IP}" sh -
cp /var/lib/rancher/k3s/server/node-token /vagrant
SCRIPT

# We run this script on the node server
control.vm.provision "shell", inline: $nodescript

Part 2:

Part 3:

create VM
install docker, k3d, kubectl etc

K3d deploys Docker-based k3s Kubernetes clusters.

louisabricot / inception-of-things Goto Github PK