kubernetes-the-hard-way/docs/12-configure-pod-networking.md

Provisioning Pod Network

We chose to use CNI - weave as our networking option.

Download the CNI Plugins required for weave on each of the worker nodes - worker-1 and worker-2 wget https://github.com/containernetworking/plugins/releases/download/v0.7.5/cni-plugins-amd64-v0.7.5.tgz

Extract it to /opt/cni/bin directory `sudo tar -xzvf cni-plugins-amd64-v0.7.5.tgz --directory /opt/cni/bin/``

Deploy weave network. Run only once on the master node. kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"

Weave uses POD CIDR of 10.32.0.0/12 by default.

Verification

List the registered Kubernetes nodes from the master node:

master-1$ kubectl get pods -n kube-system

output

NAME                       READY   STATUS    RESTARTS   AGE
weave-net-cfzk5            2/2     Running   0          41m