Part 1 | Prepare Installation Kubernetes (K3s)

Environtment

6 Virtual Machine

• loadbalancer = 10.10.10.59/24
• cp1 = 10.10.10.160/24
• cp2 = 10.10.10.182/24
• cp3 = 10.10.10.54/24
• worker1 = 10.10.10.69/24
• worker2 = 10.10.10.165/24
• worker3 = 10.10.10.62/24

K3S Component

• kubernetes
• containerd
• runc
• calico
• coredns
• metric-server
• traefik
• helm-controller
• local-path-provisioner
• etcd

Topology

Prequisite Install

Add New User

useradd -m -s /bin/bash rafiryd
passwd rafiryd

echo "rafiryd ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers.d/rafiryd

Set Hostname

// on node loadbalancer
hostnamectl set-hostname loadbalancer

// on node cp1
hostnamectl set-hostname cp1

// on node cp2
hostnamectl set-hostname cp2

// on node cp3
hostnamectl set-hostname cp3

// on node worker1
hostnamectl set-hostname worker1

// on node worker2
hostnamectl set-hostname worker2

// on node worker3
hostnamectl set-hostname worker3

Set Timezone

timedatectl set-timezone Asia/Jakarta

Set IP Static

Note : Skip this step if you use cloud-init

setting netplan

vim /etc/netplan/00-installer-config.yaml

edit

# This is the network config written by 'subiquity'
network:
  ethernets:
    ens160:
      dhcp4: false
      addresses: [10.10.10.x/24]
      routes:
        - to: default
          via: 10.10.10.254
      nameservers:
        addresses: [1.1.1.1,8.8.8.8]
  version: 2

Update & Upgrade

apt update -y && apt upgrade -y