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Danube Cloud

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What Danube Cloud is

Danube Cloud is open-source software for creating, operating, and automating cloud data centers on hardware you manage. It supports hardware and container virtualization, with provisioning automation for deployment. A centralized, mobile-friendly web portal manages data centers and shows physical and virtual resource use; the management console is accessed through supported browsers such as Firefox and Chrome or Chromium. An API supports cloud management and integrations with external systems, including ERPs and e-shops.

Networking includes VLAN and VXLAN support. The platform integrates ZFS and stores virtual machines on compute-node local storage, with optional replication to a backup compute node. Recovery features include ZFS snapshots, incremental virtual-machine backups, and VM image repositories. Danube Cloud supports multi-tenant virtual data centers with resource management, security features including role-based access control, and Zabbix monitoring with automated configuration. It is installed on compute-node hardware and is based on SmartOS, which its documentation calls ErigonOS in its modified form. The Community Edition repository identifies the software under Apache License 2.0. The project lists extensive documentation and describes partner-based support for deployments, including 24/7 availability and possible proactive remote support under an SLA.

Who it suits

Danube Cloud suits organizations that want to build and manage cloud data centers on their own compute-node hardware. It is also relevant for teams that need virtualization, multi-tenant resource management, backup and replication features, or API-based automation and integration.

What it does well

Supports both hardware and container virtualization.
Manages data centers through a mobile-friendly web portal.
Includes VLAN and VXLAN networking support.
Provides ZFS snapshots, incremental backups, and replication.
Offers an API for management and external integrations.

What to know first

Requires installation on compute-node hardware.
Uses a SmartOS-based system described as modified ErigonOS.

Getting started

Visit the Danube Cloud website and download the Community Edition.
Install it on compute-node hardware.
Access the management console through a supported browser such as Firefox or Chrome/Chromium.
Use the web portal or API to manage the data center and automate deployment.

Verdict

Choose Danube Cloud if you want open-source software to deploy and operate data centers on hardware you manage, with virtualization, storage recovery, and automation in one system. Look elsewhere if you need a cloud service that does not require installing software on compute-node hardware.

Questions

Is Danube Cloud free?

Yes. Its pricing model is free, and the Community Edition repository identifies the software under Apache License 2.0.

Where can Danube Cloud run?

It is installed on compute-node hardware and is based on SmartOS, which its documentation calls ErigonOS in its modified form.

Does it provide an API?

Yes. The API supports cloud management, automation, and integration with external systems such as ERPs and e-shops.

What virtualization does it support?

It supports hardware virtualization and container virtualization.

What support is described for deployments?

Implementation partners provide first- and second-level support; Danube Cloud or authorized service centers provide third-level support through partners. The documentation describes support as available 24/7 and says proactive remote support may be provided under an SLA.

Facts from Danube Cloud's own pages

API: Danube Cloud provides an API interface for cloud management. · docs.danube.cloud, 4 Oct 2026
Backups: It provides integrated incremental virtual-machine backups and snapshots. · danube.cloud, 4 Oct 2026
Documentation and support: The project lists extensive documentation and support for important deployments. · danube.cloud, 4 Oct 2026
Integrations: The documented API supports automation and integration with external systems such as ERPs and e-shops. · docs.danube.cloud, 11 Oct 2026
License and download: The Community Edition repository identifies the software as Apache License 2.0 and links to its download page. · github.com, 11 Oct 2026
Management: A centralized, mobile-friendly web portal manages Danube Cloud data centers. · docs.danube.cloud, 4 Oct 2026
Monitoring: An integrated Zabbix server monitors hardware, compute nodes, virtual machines, and containers, with alerts available by email or SMS. · docs.danube.cloud, 11 Oct 2026
Multi-tenancy: Virtual data centers support delegated administration and separation of resources among customers, groups, or projects. · docs.danube.cloud, 11 Oct 2026
Networking: It provides virtual networks, automatic IP configuration and DNS management, and network anti-spoofing protection. · docs.danube.cloud, 11 Oct 2026
Product: Danube Cloud is open source software for creating cloud data centers on your own hardware. · docs.danube.cloud, 4 Oct 2026
Purpose: Danube Cloud is open-source software for deploying, managing, and automating cloud data centers on your own hardware. · danube.cloud, 11 Oct 2026
Requirements: Danube Cloud is installed on compute-node hardware and is based on SmartOS, which the documentation calls ErigonOS in its modified form. · docs.danube.cloud, 11 Oct 2026
Security: The documentation describes isolation at the hypervisor, network, filesystem, and data-center levels. · docs.danube.cloud, 11 Oct 2026
Storage: Danube Cloud integrates ZFS and stores virtual machines on compute-node local storage, with optional replication to a backup compute node. · docs.danube.cloud, 4 Oct 2026
Storage and recovery: Storage features include ZFS snapshots, incremental backups, replication, and VM image repositories. · docs.danube.cloud, 11 Oct 2026
Support: The documentation says implementation partners provide first- and second-level support, while Danube Cloud or authorized service centers provide third-level support through partners. · docs.danube.cloud, 11 Oct 2026
Support availability: The documentation describes support as available 24/7 and says proactive remote support may be provided under an SLA. · docs.danube.cloud, 11 Oct 2026
Supported access: The management console is accessed through supported web browsers, including Firefox and Chrome or Chromium. · docs.danube.cloud, 4 Oct 2026
Virtualization: It supports KVM hardware virtualization and container virtualization on the same host. · docs.danube.cloud, 11 Oct 2026
Web management: Its centralized, mobile-friendly web portal manages data centers and shows physical and virtual resource usage. · docs.danube.cloud, 11 Oct 2026

Where Danube Cloud stands on Freedom251

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