OpenNode OS

Lightweight bare-metal cloud OS combining Linux Containers and KVM
full virtualization options into payload optimized solution.

Industry standards compliant

Based on RHEL / CentOS stable operating system with certified hardware drivers.

Easy installation

Streamlined bare-metal installer with RAID support and automated network deployment options.

Saltstack support

Fast, scalable and flexible systems management software for data center automation and cloud orchestration.

Host agnostic

Run OpenNode OS inside AWS, Rackspace or a bare-metal standalone server - the choice is yours.

One-click appliances

Leverage a library of supported ready-made virtual appliances from OpenNode and Turnkeylinux.

Openvswitch networking stack

Production quality multilayer virtual switch - providing VLANs, QoS, bonding and more.

Contact for details.

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OpenNode OS Usage Guide

Complete OpenNode OS Usage Guide is currently under active development - howto's section and some usage examples below.


OpenNode OS migration to softraid (live)

If in need to migrate OpenNode OS from single disk installation (no hardware raid) to linux software raid setup (RAID1) - please use this recipe. Conversion can be done online without much interrupting server operations besides a bit reduced disk IO.


OpenNode OS CD install

  • Download and burn OpenNode OS ISO installer image
  • Boot server from OpenNode OS install CD
  • Follow installer on-screen instructions
  • Choose automatic partitioning (if server has hardware RAID or RAID is not needed). Automated partitioning creates all needed partitions and LVM volumes on servers first harddisk or RAID disk - if server has several harddisks or RAID disks and there is a need to spread initial partitions over these then manual partitioning is needed (or migrating LVM volumes later manually).
  • Choose automatic partitioning with softraid setup (if server has no hardware raid and softraid setup is desired)
  • Follow installer on-screen instructions to complete the installation and reboot

KVM VM management with virt-manager GUI

This howto is about using standard virt-manager GUI tool for KVM VM management. In its current state virt-manager is not capable of fully managing OpenVZ linux containers - so it's mainly a alternative GUI tool for doing KVM VM management with OpenNode OS - and not supporting all features that OpenNode OS may have. However we try to make virt-manager user experience as smooth as we can by pre-configuring libvirt for OpenNode related policies as much as possible.


KVM Guest virt-install examples with virtio drivers


Firewalling support in OpenNode OS 6.x series

In order to simplify iptables firewall configuration we have included a Shorewall firewall package ( - a gateway/firewall configuration tool for GNU/Linux.


Deployment Guide


Converting from CentOS to OpenNode OS

There can be situations when using OpenNode ISO installer or doing networked PXE installs is not possible (for example in case of pre-installed dedicated server offerings) - therefor we have created an helper script in order to assist converting existing CentOS installations into OpenNode compatible hosts.