Managing Kubernetes clusters

Self-service users can deploy ready-to-use Kubernetes clusters with persistent storage for managing containerized applications.

A Kubernetes cluster includes the following components:

Kubernetes version Underlying OS Container runtime Network plugin
v1.23.5 Fedora 39 CoreOS Docker 20.10.23

Flannel VXLAN (for public VM networks)

Flannel host-gw (for private VM networks)

v1.24.3, v1.25.7, v1.26.11, v1.27.8, v1.28.4 containerd 1.6.19


  • Kubernetes versions 1.15.x–1.22.x are no longer supported. Kubernetes clusters created with these versions are marked with the Deprecated tag.
  • Kubernetes cluster certificates are issued for five years. To renew the certificates, use the openstack coe ca rotate command, as described in the OpenStack documentation.