How to get kubernetes pod network CIDR I have a running k8s cluster initialized with kubeadm. 

On initialization, I did not pass the option --pod-network-cidr

How do I get the CIDR of the pod network

I tried 


Looking at the /etc/kubernetes/manifests/kube-apiserver.yaml which seems to be the manifest for kube-apiserver used by kubeadm but that information is not included
Looking at the kubeadm document but I couldn't find a default value
This command will give you the pod CIDR addresses for each of the nodes in your cluster.

kubectl get nodes -o jsonpath='{.items[*].spec.podCIDR}'