Solution
~$ kubectl explain service.spec.selector
KIND: Service
VERSION: v1
FIELD: selector
DESCRIPTION:
Route service traffic to pods with label keys and values matching this
selector. If empty or not present, the service is assumed to have an
external process managing its endpoints, which Kubernetes will not modify.
Only applies to types ClusterIP, NodePort, and LoadBalancer. Ignored if
type is ExternalName. More info:
https://kubernetes.io/docs/concepts/services-networking/service/
~$ kubectl get endpoints mongodb-service
selector:
name: mongodb
labels:
app: mongodb
MONGODB_SETTINGS = {'db': 'mongodb', 'host': '10.97.8.16', 'port': 27017}