Pre-requisites

Software

Both worker and server nodes require gcc compiler and python3-dev:

sudo apt install gcc g++ python3-dev

If you want to use Longhorn distributed storage, you need to install and configure open-iscsi:

sudo apt install open-iscsi
sudo modprobe iscsi_tcp
sudo modprobe dm_mod
echo "iscsi_tcp" | sudo tee -a /etc/modules-load.d/longhorn.conf
echo "dm_mod" | sudo tee -a /etc/modules-load.d/longhorn.conf

Ports

Once a machine is part of a pool, the following ports must be enabled and open to accept and process workloads:

Seed nodes:

2379-2380 TCP inbound/outbound
6443 TCP inbound
8472 UDP inbound/outbound
10250 TCP inbound/outbound
51820-51821 UDP inbound/outbound

Worker nodes:

6443 TCP outbound
8472 UDP inbound/outbound
10250 TCP inbound/outbound
51820-51821 UDP inbound/outbound
5121 TCP inbound/outbound