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13-configure-pod-networking.md

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Provisioning Pod Network

Container Network Interface (CNI) is a standard interface for managing IP networks between containers across many nodes.

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

Deploy Weave Network

Deploy weave network. Run only once on the master-1 node. You will see a warning, but this is OK.

On master-1

kubectl apply -f "https://github.com/weaveworks/weave/releases/download/v2.8.1/weave-daemonset-k8s-1.11.yaml"

Weave uses POD CIDR of 10.244.0.0/16 by default.

Verification

List the registered Kubernetes nodes from the master node:

kubectl get pods -n kube-system

output

NAME              READY   STATUS    RESTARTS   AGE
weave-net-58j2j   2/2     Running   0          89s
weave-net-rr5dk   2/2     Running   0          89s

Once the Weave pods are fully running which might take up to 60 seconds, the nodes should be ready

kubectl get nodes

Output

NAME       STATUS   ROLES    AGE     VERSION
worker-1   Ready    <none>   4m11s   v1.28.4
worker-2   Ready    <none>   2m49s   v1.28.4

Reference: https://kubernetes.io/docs/tasks/administer-cluster/network-policy-provider/weave-network-policy/#install-the-weave-net-addon

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