Find the cluster CIDR for service IP allocations in kuberneted

Question

How can I find what IP block is used by the api-service (or whatever other component is responsible) to dole out the service IPs, from a live cluster.

We use a self managed Kubernetes cluster deployed on AWS using terraform. The networking is managed by Calico. However from what I have read it seems like calico is only responsible for the pod and container IPs.

Answer 1

您可以在命令下方运行，然后在输出中找到群集IP范围，例如--service-cluster-ip-range=xxxx/x

kubectl cluster-info dump  | grep --color service-cluster-ip-range

Answer 2

这是在初始运行时传递给您的kube-apiserver的变量，例如：

--service-cluster-ip-range=10.3.0.0/20