Private network for Hetzher hardware servers

vSwitch

• Open Hetzner control panel and go to "Servers" section
• Create vSwitch with some ID (I used default 4000), do not check "additional network" if you want use free private network
• Add your servers to created VLAN

Install

By default playbook creates /24 VLAN network with ID you created in control panel. Supports Ubuntu 16.04 and 18.04, but I'm sure you can modify it to your needs.

• Add your servers to inventory.ini file, just as examples
• In file group_vars/hwservers-vlan.yaml set vlan_id
• Run playbook

Playbook will create file /etc/network/interfaces.d/vlan and run command to activate it

auto enp4s0.4000
iface enp4s0.4000 inet static
  address 10.0.50.11
  netmask 255.255.255.0
  vlan-raw-device enp4s0
  mtu 1400