How do you find the cluster/service CIDR for a Kubernetes cluster, once it is already running?
I know for Minikube, it is 10.0.0.1/24.
For GKE, you can find out via
gcloud container clusters describe XXXXXXX --zone=XXXXXX |
grep -e clusterIpv4Cidr -e servicesIpv4Cidr
But how do you find out on a generic Kubernetes cluster, particularly via kubectl?
Get Services IPs range
kubectl cluster-info dump | grep -m 1 service-cluster-ip-range
You will see something like e.g. --service-cluster-ip-range=xxx.yy.0.0/13
Get Pods IPs range
kubectl cluster-info dump | grep -m 1 cluster-cidr
You will see something like e.g. --cluster-cidr=xxx.yy.0.0/11