installation_requirements.md

Installation requirements

Installation requirements.

Network

🔀 Connectivity

All nodes must be within the same subnet.

Direct layer 2 connectivity between nodes.

Node

⌛ Timezone

Timezone must be set to Etc/UTC.

cp /usr/share/zoneinfo/Etc/UTC /etc/localtime
printf '%s\n' "Etc/UTC" > /etc/timezone

😴 Wake-on-Lan

Wake-on-Lan must be enabled if it is supported.

• Check if supported

  Note: If empty, Wake-on-Lan is not supported

  _dev="eth0"
  
  sudo ethtool "$_dev" | grep 'Supports Wake-on'

• Check if enabled

  Note: Value d indicates that it is disabled

  _dev="eth0"
  
  sudo ethtool "$_dev" | grep 'Wake-on' | grep --invert-match 'Supports Wake-on'

  1. Enable

     Warning: Wake-on-Lan must be enabled also in the BIOS

     Note: Example device eth0

     Edit /etc/network/interfaces

       auto eth0
       iface eth0 inet dhcp
     +   pre-up /usr/sbin/ethtool -s eth0 wol g

  2. Reboot

     sudo reboot