opennebula  6.6.0
About: OpenNebula is a toolkit for cloud computing to manage the complexity and heterogeneity of distributed data center infrastructures.
  Fossies Dox: opennebula-6.6.0.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

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opennebula Documentation

Some Fossies usage hints in advance:

  1. To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
  2. If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
  3. Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies opennebula-6.6.0.tar.gz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).

OpenNebula Logo


OpenNebula is an open source platform delivering a simple but feature-rich and flexible solution to build and manage enterprise clouds for virtualized services, containerized applications and serverless computing.

OpenNebula Architecture

To start using OpenNebula

OpenNebula Intro

Contributing to OpenNebula

Taking OpenNebula for a Test Drive

There are a couple of very easy ways to try out the OpenNebula functionality

  • miniONE for infrastructures based on open source hypervisors.
  • vOneCloud for VMware based infrastructures.


You can find more information about OpenNebula’s architecture, installation, configuration and references to configuration files in this documentation section.

It is very useful to learn where log files of the main OpenNebula components are placed. Also check the reference about the main OpenNebula daemon configuration file.

Front-end Installation

The Front-end is the central part of an OpenNebula installation. This is the machine where the server software is installed and where you connect to manage your cloud. It can be a physical node or a virtual instance.

Please, visit the official documentation for more details and a step-by-step guide. Using the packages provided on our site is the recommended method, to ensure the installation of the latest version, and to avoid possible package divergences with different distributions. There are two alternatives here: you can add our package repositories to your system, or visit the software menu to download the latest package for your Linux distribution.

If there are no packages for your distribution, please check the build dependencies for OpenNebula and head to the Building from Source Code guide.

Node Installation

After the OpenNebula Front-end is correctly set up, the next step is preparing the hosts where the VMs are going to run. Please, refer to the documentation site for more details.



Copyright 2002-2022, OpenNebula Project, OpenNebula Systems (formerly C12G Labs)

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.