Networking
Kube-OVN Underlay relies on the support of the physical network for container networking. Before deploying the Kube-OVN Underlay network, please plan and configure the physical network in collaboration with the network administrator to ensure network connectivity.
Add multiple network interfaces to Pods using Multus CNI. Use Kube-OVN network's Subnet and IP CRD for advanced IP management, including subnet management, IP reservation, random allocation, and fixed allocation.
In the Kube-OVN cluster, Pods in Overlay network mode cannot be accessed directly from external networks. However, it is possible to achieve direct access to the Pod IP by adjusting the routing configuration of the external network.
In a Calico cluster, Pods cannot be directly accessed from external networks. You can achieve connectivity between Calico and external networks by configuring BGP peers.
Deploying a pure software-defined data center LB, by creating a highly available load balancer outside the cluster, provides load balancing capabilities for multiple ALBs in the cluster, ensuring stable operation of the business.
Calico supports WireGuard encryption for both IPv4 and IPv6 traffic, which can be independently enabled through parameters in the FelixConfiguration resource.