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FLANNEL
Simple Kubernetes overlay networking CNI
Apache-2.0
ABOUT
Pods on different nodes cannot talk until a CNI assigns addresses and routes them. Flannel is a small overlay CNI that gives each node a subnet and forwards traffic with VXLAN or host-gw, so ML clusters get working pod networking without Calico-scale policy machinery.
INTEGRATION GUIDE
1. Provide pod networking on a GPU Kubernetes cluster with a small CNI
2. Use host-gw Flannel on a flat L2 lab so training jobs skip VXLAN overhead
3. Boot kind, k3s, or kubeadm clusters that need a default overlay network
4. Isolate east-west ML traffic to overlay subnets without a service mesh
TAGS
kubernetescninetworkingoverlayvxlanmlopsopen-source