Prerequisites

Hardware

  • RAM: 2GB recommended

Operating system

  • Ubuntu 16.04 (Xenial)

Network

  • All nodes connected to the same LAN through the specified interface (first one by default)
  • Firewall is disabled
  • SELinux or AppArmor are disabled

System

  • root privileges are required (using sudo)
  • All nodes must have different hostnames
  • /var/lib partition must support Extended Attributes: XFS is recommended