13-configure-pod-networking.md

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://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:

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   v1.24.3
worker-2   Ready    <none>   2m49s   v1.24.3

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

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