Using this you can access node external ip address value from your pod.
Example
Add init container into your pod
...
initContainers:
- args:
- --node-name=$(NODE_NAME)
- --pod-namespaced-name=$(NAMESPACE)/$(POD_NAME)
env:
- name: NAMESPACE
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.namespace
- name: NODE_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: spec.nodeName
- name: POD_NAME
valueFrom:
fieldRef:
apiVersion: v1
fieldPath: metadata.name
image: sputniksystemsorg/k8s-propagate-node-status:1643500620
imagePullPolicy: IfNotPresent
name: add-label-with-external-ip
...
Setup downwardAPI mountpoint into your pod
...
containers:
- name: app
...
volumeMounts:
- mountPath: /etc/podinfo
name: podinfo
...
volumes:
- downwardAPI:
defaultMode: 420
items:
- fieldRef:
apiVersion: v1
fieldPath: metadata.labels
path: labels
name: podinfo
...
After this your pod labels will be accessible from container from mountpoint /etc/podinfo. For example, node's .status.addresses field will be exposed into labels node.status.addresses/internal-ip, node.status.addresses/external-ip etc.
