Preparing Nodes¶

Install Ubuntu¶

Download Ubuntu Server 21.04 ISO and install Ubuntu on each node.

VLAN Config

Physical devices (amd64)

Select the required VLAN (100) during the server setup

Raspberry Pi (arm)

For raspberry pi/ARM edit the file

sudo vi /etc/netplan/50-cloud-init.yaml

Update the yaml file with the content

# /etc/netplan/50-cloud-init.yaml
network:
  ethernets:
    eth0:
      dhcp4: true
  vlans:
    vlan100:
      id: 100
      link: eth0
      dhcp4: true
  version: 2

Validate the network settings

sudo netplan try

Save the network settings

sudo netplan apply

Generate SSH Key on host machine¶

ssh-keygen -t ed25519 -C "rogerrum@gmail.com"

Copy over SSH key from the host machine¶

ssh-copy-id -i ~/.ssh/id_rsa.pub rsr@192.168.50.100

Ubuntu use all partition space¶

lsblk

sudo parted /dev/sda print

sudo lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv

sudo resize2fs /dev/ubuntu-vg/ubuntu-lv

Prepare Disks for Longhorn¶

Prepare/mount the additional disks for Longhorn

wget https://raw.githubusercontent.com/rogerrum/homelab-infrastructure/main/k3s/ha/setup-disks.sh \
 -O setup-disks.sh  && chmod +x setup-disks.sh

run setup-disks.sh for each additional disk

./setup-disks.sh sdb storage