Overview

Servers are deployed from an image selected at order time or on reinstall. Four kinds are available: operating system images, 1-Click app images (an OS with an application preinstalled), blockchain node images, and customer-provided custom images. Availability depends on the product.


Operating System Images

ProductLinux / BSDWindows Server
VPS — Core VPS, Performance VPSUbuntu, Debian, AlmaLinux, Rocky Linux, CentOS, openSUSE, FreeBSD2016, 2019, 2022, 2025; Contabo license (add-on)
VPS — Storage VPSUbuntu, Debian, AlmaLinux, Rocky Linux, Fedora, FreeBSD2016, 2019, 2022, 2025; Contabo license (add-on)
VDS (Max Performance VPS)Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS, openSUSE, FreeBSD2016, 2019, 2022, 2025; Contabo license (add-on)
Dedicated ServersUbuntu, Debian, AlmaLinux, Rocky Linux, CentOSContabo license or bring-your-own-license

Windows Server is an add-on with a Contabo-provided license on all VPS families and VDS, with the same versions on each; bring-your-own-license is permitted on Dedicated Servers. Reinstalling from the Control Panel keeps the server’s IP address.


1-Click App Images

An OS image with an application preinstalled and configured at first boot.

Product1-Click images
VPS and VDS (Max Performance VPS)OpenClaw · n8n · Nextcloud · WireGuard · GitLab CE · cPanel · Plesk · Dokploy · Paperclip AI · Hermes Agent · Ollama

1-Click apps are selected in the order configurator or installed on an existing server via reinstall; the current selection is shown there.


Blockchain Images

Node images for Bitcoin, Ethereum, IPFS and Horizen are available for VPS and VDS (Horizen also for Storage VPS).


Custom Images

AspectDetails
ProductsVPS and VDS; the Custom Image Storage add-on can be ordered at any time
FormatsISO (bootable installer) or QCOW2 (pre-installed disk image, uncompressed). The image type is validated, not just the file extension
Architecturex86-64 (amd64) only
DriversVirtIO storage (virtio_scsi) and network (virtio_net) drivers required
SourceCustomer-provided image files

Dedicated Servers do not use the Custom Image Storage add-on; custom ISOs are booted through IPMI.


Limitations & Notes

  • Windows Server bring-your-own-license is not permitted on VPS and VDS.
  • Custom Windows images are not permitted (Microsoft licensing); support cannot assist with servers running one.
  • Custom images without VirtIO drivers do not boot.
  • Reinstalling erases all data on the disk; changing storage type (SSD ↔ NVMe) or plan family always requires a reinstall.
  • Cryptocurrency mining is not permitted on VPS.