Posted by Table of Contents
You can find all of the config files on the GitHub page.
Overview
Kubernetes uses a DNS server based off of SkyDNS to . You can read more about it here.
You probably want to perform the actions below on the same machine where you installed kubectl.
Create the SkyDNS Kubernetes service
Download the service definition file
curl -O https://raw.githubusercontent.com/kelseyhightower/kubernetes-the-hard-way/master/skydns-svc.yaml
Edit skydns-svc.yaml and change clusterIP to 172.16.0.10 or anything else that is in your etcd IP pool. Mine is 172.16.0.0/16. I believe this IP needs to be in your certificate as a SAN entry. Before I did this the SkyDNS containers would fail and the Kubernetes controller node reported certificate errors from the skydns containers.
skydns-svc.yaml
apiVersion: v1
kind: Service
metadata:
name: kube-dns
namespace: kube-system
labels:
k8s-app: kube-dns
kubernetes.io/cluster-service: "true"
kubernetes.io/name: "KubeDNS"
spec:
selector:
k8s-app: kube-dns
clusterIP:172.16.0.10
ports:
- name: dns
port: 53
protocol: UDP
- name: dns-tcp
port: 53
protocol: TCP
Create the service
kubectl create -f skydns-svc.yaml
Which should result in:
service “kube-dns” created
Create the skydns deployment
kubectl create -f https://raw.githubusercontent.com/kelseyhightower/kubernetes-the-hard-way/master/deployments/kubedns.yaml
deployment “kube-dns-v19” created
kubectl –namespace=kube-system get pods
NAME READY STATUS RESTARTS AGE kube-dns-v19-965658604-p2js8 3/3 Running 0 22h kube-dns-v19-965658604-ru5ac 3/3 Running 0 22h
orchestration.io 