2026.1 Series Release Notes

22.0.0-11

Bug Fixes

• Creating or updating a cluster template with an image that does not have the os_distro property set previously failed with a confusing “cluster type not supported” error listing unrelated driver combinations. This case is now detected explicitly and raises a clear error stating that the image’s os_distro is unset and therefore not supported.

Other Notes

• The error raised when a cluster’s (server_type, os, coe) combination does not match any loaded cluster driver now lists the combinations that are actually supported by the loaded drivers, making it easier to diagnose why a driver could not be matched. A separate, more specific error is now raised when a matching driver exists but is a beta driver that has not been enabled via [drivers]/enabled_beta_drivers.

22.0.0

Upgrade Notes

• Support for Python 3.8 and 3.9 has been removed. Now the minimum Python version supported is 3.10.

Bug Fixes

• The boot_volume_size label value is passed as a string from the API. The validator now converts it to an integer before comparison.

Other Notes

• Helm client version (configured by ‘helm_client_tag’ label) has been bumped to v3.13.3. This version supports Kubernetes 1.28.x - 1.25.x.

21.0.0

New Features

• This release introduces the ‘credentials’ endpoint to Magnum API which initially supports rotation of cluster credentials. The definition of “credential” and the implementation to perform the rotation, is dictated by the underlying driver.