Ubuntu kubernetes installation

System preparation

$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=24.04
DISTRIB_CODENAME=noble
DISTRIB_DESCRIPTION="Ubuntu 24.04.2 LTS"

Updrage

sudo apt update
sudo apt upgrade
do-release-upgrade

(Optional) Mount data disk

mkfs.xfs /dev/vdb
lsof /var
mv /var/ /var0
mkdir /mnt/newvar/
mount /dev/vdb /mnt/newvar/
rsync -aqxP /var0/* /mnt/newvar/
umount /mnt/newvar
mkdir /var
mount /dev/vdb /var

vim /etc/fstab
# /dev/vdb /var xfs  defaults 0 0

System configuration

Enable ipv4 forward:

# sysctl params required by setup, params persist across reboots
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
EOF

# Apply sysctl params without reboot
sudo sysctl --system

Verify:

$ sysctl net.ipv4.ip_forward
net.ipv4.ip_forward = 1

Disable swap

# check if swap is disabled
swapon -s