Release Notes 7.2 on

What's New

Mon, 06 Oct 2025 00:00:00 +0000

The OpenNebula team is excited to announce the availability of the OpenNebula 7.2 “Dark Horse” release! While our previous 7.0 “Phoenix” release focused on the transition from legacy virtualization, OpenNebula 7.2 is engineered for production at scale. This release marks a significant evolution, introducing deeper automation, hardware-rooted security, and the high-performance orchestration required to power modern Sovereign Clouds and AI Factories.

OpenNebula 7.2 is a high-performance engine designed to handle the most demanding enterprise workloads. Key highlights of this release include:

Platform Notes

Mon, 17 Feb 2025 00:00:00 +0000

This page highlights the specific considerations when using an OpenNebula cloud on one of the different supported platforms.

This is the list of the individual platform components that have been through the complete OpenNebula Quality Assurance and Certification Process.

Certified Components Version

Front-end Components

Component	Version	More information
Red Hat Enterprise Linux	9, 10	Front-end Installation
AlmaLinux	9, 10	Front-end Installation
Ubuntu Server	22.04 (LTS), 24.04 (LTS)	Front-end Installation
Debian	12, 13	Front-end Installation Not certified to manage VMware infrastructures
SUSE Linux Enterprise	15	Front-end Installation
openSUSE	16	Front-end Installation
MariaDB or MySQL	Version included in the Linux distribution	MySQL Setup
SQLite	Version included in the Linux distribution	Default DB, no configuration needed

Note

Support for nodes’ operating system ensures that the latest two LTS releases feature certified packages.

KVM Nodes

Component	Version	More information
Red Hat Enterprise Linux	9, 10	KVM Driver
AlmaLinux	9, 10	KVM Driver
Ubuntu Server	22.04 (LTS), 24.04 (LTS)	KVM Driver
Debian	12, 13	KVM Driver
SUSE Linux Enterprise	15	KVM Driver
openSUSE	16	KVM Driver
KVM/Libvirt	Support for version included in the Linux distribution.	KVM Node Installation

LXC Nodes

Component	Version	More information
Ubuntu Server	22.04 (LTS), 24.04 (LTS)	LXC Driver
Debian	12, 13	LXC Driver
AlmaLinux	9, 10	LXC Driver
LXC	Support for version included in the Linux distribution	LXC Node Installation

ARM64 packages

Mon, 01 Jan 0001 00:00:00 +0000

Since OpenNebula version 6.10.3-EE and 6.10.0.1-CE releases include ARM64 packages for all supported operating systems. This initiative aims to extend OpenNebula’s flexibility by enabling deployment on ARM-based servers (both hypervisors and Front-end nodes), opening new possibilities for lightweight, distributed cloud environments.

For the configuration details about ARM64 please refer to ARM64 Specifics.

Compatibility Guide

Mon, 17 Feb 2025 00:00:00 +0000

This guide is aimed at OpenNebula 7.0.x users and administrators who want to upgrade to the latest version. The following sections summarize the new features and usage changes that should be taken into account or could perhaps cause confusion. You can check the upgrade process in the corresponding section. If upgrading from previous versions, please make sure you read all the intermediate versions’ Compatibility Guides for possible pitfalls.

Known Issues

Mon, 06 Oct 2025 00:00:00 +0000

A complete list of known issues for OpenNebula is maintained here.

This page will be updated with relevant information about bugs affecting OpenNebula, as well as possible workarounds until a patch is officially published.

Core

OneForm is not properly restarted in a HA setup when the leader changes.

Drivers - Virtualization

libvirtd restarts in cycles each 10 minutes with error message in system logs, due to the way libvirtd gets activated per interaction by systemd in 120-second slices. As the default interval for the OpenNebula monitor probe is 600 seconds (10 minutes), each time a probe reactivates libvirtd, it sends those messages to syslog.

Sunstone

Guacamole RDP as is currently shipped in OpenNebula does not support NLA authentication. You can follow these instructions in order to disable NLA in the Windows box to use Guacamole RDP within Sunstone.

Acknowledgements

Mon, 06 Oct 2025 00:00:00 +0000

The OpenNebula project would like to thank the community members and users who have contributed to this software release by being active in discussions, answering user questions, or providing patches for bugfixes, features, and documentation.

Some of the new functionality in OpenNebula 7.2 has been made possible through funding from the following innovation projects:

ONEnextgen, funded by the Spanish Ministry for Digital Transformation and Civil Service through the ONEnextgen Project: Next-Generation European Platform for the Datacenter-Cloud-Edge Continuum (UNICO IPCEI-2023-003) and co-funded by the European Union’s NextGenerationEU instrument through the Recovery and Resilience Facility (RRF).

ONEedge5G, funded by the Spanish Ministry for Digital Transformation and Civil Service through the ONEedge5G Project: Intelligence and Automation for the Operation of Distributed Edge Systems on 5G Advanced Infrastructures (TSI-064200-2023-1) and co-funded by the European Union’s NextGenerationEU Instrument through the Recovery and Resilience Facility (RRF).