Backup System on

Overview

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

Here you will find details on how to configure the available backends for Virtual Machine Backups. Backups are managed through the datastore and image abstractions, so all of the concepts that apply to these objects, such as access control or quotas, are applicable to backups.

Define backup datastores by using the available options for backends or datastore drivers:

Restic: based on the restic backup tool
Rsync: relies on the rsync utility to transfer backup files.
OpenNebula-Veeam® Backup Integration: provides robust, agentless backup and recovery for OpenNebula VMs using Veeam Backup & Replication.

Basic Guide Outline

Before reading this guide, you should have installed your Frontend, the KVM Hosts and have an OpenNebula cloud up and running with at least one virtualization node.

Backup Datastore: Restic

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

Restic is an open source (BSD 2-Clause License) backup tool designed for speed, security, and efficiency. The current implementation of the driver uses the SFTP storage type. Restic offers interesting features to store backups, like deduplication (only transferring image blobs not already present in the repository) or compression (enabled by default).

In both the Enterprise and Community editions of OpenNebula, the correct version of restic is included as a dependency. In this guide we will use the following terminology (introduced by restic):

Backup Datastore: Rsync

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

RSync is an open source file transfer utility that is included with most distributions of Linux. This backup utility is provided with the Community Edition (CE) of OpenNebula and supports both full and incremental backup methods.

Configuring the backup server

First, a server should be configured to receive and store these backup files. The rsync backup server can be any server which is accessible from the oneadmin user on the Hosts. This user on the nodes should have their key placed on the rsync server under the user specified in the rsync Backup Datastore configuration ( ~/.ssh/authorized_keys by default ).

Veeam Backup (EE)

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

The OpenNebula-Veeam® Backup Integration works by exposing a native oVirt-compatible REST API via the ovirtAPI server component, allowing Veeam to connect to OpenNebula as if it were an oVirt/RHV hypervisor. This integration enables Veeam to perform image-level backups, incremental backups by using Changed Block Tracking, as well as granular restores like Full VM and file-level directly from the Veeam console. This integration is part of OpenNebula Enterprise Edition (EE).