The oVirt project is excited to announce the general availability of oVirt 4.5.7, as of January 13, 2026.

Important notes before you install / upgrade

Due to CentOS Stream 8 having reached End-Of-Life as of May 31, 2024 oVirt is no longer supported on this version and its derivatives.

If you are going to install oVirt 4.5.7 on RHEL or similar. Please read Installing on RHEL or derivatives first.
Also do note that for installs on RHEL 10 and derivatives that version 10.0-4 (or newer) of centos-release45 is used.

To everyone using the oVirt Node NG we urge you to switch over to another way of using the product for ensured stability and security due to the way of how that product is structured.

There is no longer a strong suggestion to use the nightly repositories but if you want to use the latest features/test upcoming release, you can use our master snapshots. We advice against using these in production.

What’s new in the oVirt 4.5.7 release?

The release is available for the following platforms:

Engine:

  • Red Hat Enterprise Linux 9 (or similar)
  • Red Hat Enterprise Linux 10 (or similar)
  • CentOS Stream 9
  • CentOS Stream 10

Hosts:

  • Red Hat Enterprise Linux 9 (or similar)
  • Red Hat Enterprise Linux 10 (or similar)
  • oVirt Node based on CentOS Stream 9
  • CentOS Stream 9
  • CentOS Stream 10

New features:

  • CentOS 10 and AlmaLinux 10 support.
  • Fixed [CVE-2024-7259]
  • Introduced new CPUs.
  • Bumped external dependencies.
  • Implemented a new way of deploying to maven central.
  • All Java code is now built on Java 21 and compatible with Java 11.
  • Reconnect faster to hosts after reboot, instead of a static 10 minutes adapted to connect when the host is back online.
  • On boot of a VM have a spare of NumOfPciExpressPorts PCIe ports available instead of a fixed number.
  • Add the optional attach_wgt flag to the VM start endpoint. This will auto attach the virtio-win iso to the VM.
  • Ability to add tags to templates via UI in the administration panel.
  • Add operating system description to the host API object.
  • Added option for the user to decide preference of VNC console invocation.
  • Added Windows 2025 and RHEL 10 to OS list.
  • Improved isLiveDelete check on VM.
  • Dropped deprecated packages.
  • Dropped Ceph, Cinderlib and collectd in CentOS 10 due to them not being available.
  • Added new DC/Cluster level (4.8).
  • Cluster level 4.8 now uses pc-q35-rhel9.6.0 machine type and enables discard-no-unref by default.
  • Added ability to alter video device through the API.
  • Set audio value to ich9 starting from RHEL7 on Q35.
  • When a VDS network error occurs during VM start, set the VM status to “Unknown” instead of letting it fall through to “Down”. This to prevent duplicate VM deployments.
  • Ability to update QoS on running VMs when a QoS profile has been modified or when QoS was changed on a vNIC profile.

Many more changes have been implemented in the newest releases of the oVirt packages and can be read about in the release notes.