Managing compute resources > Managing Kubernetes clusters

Managing Kubernetes clusters

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

A Kubernetes cluster includes the following components:

• Underlying OS: Fedora 41 CoreOS
• Container runtime: containerd 1.6.23
• Network plugin:
  • Kubernetes versions 1.28–1.29:
    • Flannel VXLAN (for public VM networks)
    • Flannel host-gw (for private VM networks)
  • Kubernetes versions 1.30–1.31: Cilium

Limitations

• Kubernetes versions 1.15.x–1.27.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.
• Starting with version 1.31.x, Envoy proxy can be installed automatically with Cilium if SELinux is disabled on Kubernetes nodes.

In this section

Creating and deleting Kubernetes clusters

Managing Kubernetes worker groups

Updating Kubernetes clusters

Using persistent volumes for Kubernetes pods

Managing volume snapshots in Kubernetes

Creating external load balancers in Kubernetes

Using network policies in Kubernetes

Assigning Kubernetes pods to specific nodes

Enabling GPU support for Kubernetes nodes

Monitoring Kubernetes clusters