Getting familiar with Kubernetes services

Pods (one or more containers bundled together) are the units of work in Kubernetes. Deployments make sure that there are enough pods running. However, individual pods are ephemeral. Kubernetes services are where the action is and how you can expose your pods as a coherent service to other services in the cluster or even externally to the world. A Kubernetes service provides a stable identity and typically maps 1:1 to an application service (which may be a microservice or a traditional fat service). Let's look at all the services:

$ kubectl get svc
NAME                TYPE      CLUSTER-IP    EXTERNAL-IP   PORT(S)   AGE
api-gateway      LoadBalancer   10.103.167.102  <pending> 80:31965/TCP  6m2s
kubernetes         ClusterIP    10.96.0.1         <none>    443/TCP      25m
link-db            ClusterIP    10.107.131.61     &lt...