How to Enable KubeSpan

Talos Linux provides a full mesh WireGuard network for your cluster.

To enable this functionality, you need to configure KubeSpan and Cluster Discovery in your Talos Linux configuration:

machine:
  network:
    kubespan:
      enabled: true
cluster:
  discovery:
    enabled: true

Since KubeSpan encapsulates traffic into a WireGuard tunnel, Kube-OVN should also be configured with a lower MTU value.

To achieve this, add the following to the Cozystack ConfigMap:

apiVersion: v1
kind: ConfigMap
metadata:
  name: cozystack
  namespace: cozy-system
data:
  values-kubeovn: |
    kube-ovn:
      mtu: 1222