Manual Installation with System Packages on

Overview

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

The Front-end is the central part of an OpenNebula installation and is the very first thing that needs to be deployed (or upgraded). Typically it’s a Host where the OpenNebula server-side components are installed and which is responsible for the management of an entire virtualization stack. It can be a physical Host or a Virtual Machine (this decision is left up to the cloud administrator) as long as it matches the requirements.

Database Setup

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

OpenNebula Front-end uses the database to persist the complete state of the cloud. It supports several database solutions and each is recommended for different usage. It’s necessary to decide carefully which solution is the best for your needs, as the migration of an existing installation to a different database type is complex or impossible (depending on the backend). The following options are available:

default embedded SQLite for small workloads
recommended MySQL/MariaDB for production

It’s recommended to install the database backend now. Later, when doing the Front-end Installation, return back here and only update the OpenNebula configuration for specific backend based tasks (ideally) prior to starting OpenNebula for the first time.

OpenNebula Repositories

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

Before you can proceed with installation, you must configure the packaging tools on your Front-end Host to include OpenNebula repositories. OpenNebula software is provided via two distinct distribution channels depending on the build type you intend to install:

Choose the page matching the OpenNebula edition you intend to deploy:

OpenNebula Repositories for Community Edition

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

The Community Edition of OpenNebula offers the full functionality of the Cloud Management Platform. You can configure the Community Edition repositories as follows:

AlmaLinux/RHEL

Some dependencies require enabling the CodeReady Linux Builder repository:

crb enable

To add the OpenNebula repositories, execute the following commands as user root:

RHEL 9, 10

cat << "EOT" > /etc/yum.repos.d/opennebula.repo
[opennebula]
name=OpenNebula Community Edition
baseurl=https://downloads.opennebula.io/repo/7.2/RedHat/$releasever/$basearch
enabled=1
gpgkey=https://downloads.opennebula.io/repo/repo2.key
gpgcheck=1
repo_gpgcheck=1
EOT
yum makecache

AlmaLinux 9, 10

cat << "EOT" > /etc/yum.repos.d/opennebula.repo
[opennebula]
name=OpenNebula Community Edition
baseurl=https://downloads.opennebula.io/repo/7.2/AlmaLinux/$releasever/$basearch
enabled=1
gpgkey=https://downloads.opennebula.io/repo/repo2.key
gpgcheck=1
repo_gpgcheck=1
EOT
yum makecache

Debian/Ubuntu

Note

If the commands below fail, ensure you have gnupg, wget and apt-transport-https packages installed and retry:

OpenNebula Repositories for Enterprise Edition

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

OpenNebula Systems provides the OpenNebula Enterprise Edition (EE) to customers with an active support subscription. To distribute the packages of the Enterprise Edition there is a private repository accessible only to Enterprise Edition customers that contains all packages (including major, minor, and maintenance releases). You only need to change your repository configuration on your OpenNebula Front-end once per major release and you’ll have access to every package in that series. OpenNebula’s private repositories contain all OpenNebula released packages.

Single Front-end Installation

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

This page describes how to install a complete OpenNebula Front-end from binary packages available in the software repositories configured in the previous section. We recommend using a Host with the supported operating system as installation from packages provides the best experience and is referenced in other places of this documentation. If there are no packages for your distribution, you might consider reading the Building from Source Code guide to build OpenNebula on your own.

KVM Node Installation

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

This page shows you how to configure OpenNebula KVM Node from the binary packages.

Note

Before reading this chapter, you should have at least installed your Front-end node.

Overview

KVM (Kernel-based Virtual Machine) is the main virtualization solution for Linux on x86 hardware that contains virtualization extensions (Intel VT or AMD-V) and on ARM64 (currently in beta mode). It consists of the loadable KVM kernel modules (one that provides the core virtualization infrastructure and several processor-specific modules), but the complete KVM virtualization stack usually also contains the user-space machine hardware emulator QEMU accelerated by the KVM and Virtual Machines management tool libvirt.

LXC Node Installation

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

This page shows you how to configure OpenNebula LXC Node from the binary packages.

Note

Before reading this chapter, you should have at least installed your Front-end node.

Overview

LXC is a Linux technology which allows us to create and manage system and application containers. The containers are computing environments running on a particular hypervisor node alongside other containers or Host services, but secured and isolated in their own namespaces (user, process, network).