Kubernetes Cookbook - Second Edition

How it works...

We have set up several components to see how DNS entries are created initially. The Kubernetes Service name is especially important for determining the name of a DNS.

However, Kubernetes Service has 2 modes, either normal service or headless service. Normal service has already been described in the preceding section; it has its own IP address. On the other hand, headless service doesn't have an IP address.

Let's see how to create a headless service and how name resolution works:

1. Create a headless service (specify --cluster-ip=None) for apache on chap8-domain1 and chap8-domain2:

$ kubectl expose deploy my-apache --namespace=chap8-domain1 --name=my-apache-svc-hl --port=80 --type=ClusterIP --cluster-ip=Noneservice "my-apache-svc-hl" ...