casa/docs/k3s-cluster.md

Casa k3s cluster

Table of Contents:

• Nodes
  • Master Node
  • worker node

Nodes

Setup user for ssh access:

apt install sudo
usermod -aG sudo mf

Disable swap:

swapoff -a
Edit /etc/fstab and comment out any swap entries:
# /swapfile none swap sw 0 0

Other Packages:

sudo apt update -y | sudo apt install curl btop -y

Master Node

• debian 12
• 2g ram
• 24Gb disk

ip a # check ethernet name

# removes automatic vonfiguration as dhcp client
sed -i '/ens18/d' /etc/network/interfaces

cat <<EOF > /etc/network/interfaces.d/ens18
# my network configuration
auto ens18
iface ens18 inet static
  address 192.168.14.9/24
  gateway 192.168.0.1
EOF

cat <<EOF > /etc/resolv.conf       
domain dev.lan
search dev.lan. lan.
nameserver 192.168.14.1
EOF

curl -sfL https://get.k3s.io | sh -

worker node

• debian 12
• 4g ram
• 8Gb OS disk
• 16Gb data disk

# execute on server to get token
cat /var/lib/rancher/k3s/server/node-token

Setup worker node:

# install k3s as agent / worker node
curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="agent --server https://casa.dev.lan:6443 --token <TOKEN>" sh -s -