Can I access VM's IP inside pod?-CodePudding

I have installed kubernetes on my VM. And I run my application inside pod on kubernetes.

Now I want to get IP address of my VM in my application which is running inside pod. Is there any way to do this?

CodePudding user response：

Here's how you can get the host IP:

apiVersion: v1
kind: Pod
metadata:
  name: busybox
spec:
  restartPolicy: Never
  containers:
  - name: busybox
    image: busybox
    command: ["ash","-c","echo $MY_HOST_IP && sleep 3600"]
    env:
    - name: MY_HOST_IP
      valueFrom:
        fieldRef:
          fieldPath: status.hostIP

kubectl logs busybox will print you the IP.

CodePudding user response：

Yes, it is possible to get the host ip and the hostname from the pod running on a specific node. Use the below variable to get those values

spec.nodeName - the name of the node to which the scheduler always attempts to schedule the pod
status.hostIP - the IP of the node to which the Pod is assigned

following link would be helpful --> https://kubernetes.io/docs/tasks/inject-data-application/downward-api-volume-expose-pod-information/