k3s/docs/getting-started-guides/docker-multinode/deployDNS.md

PLEASE NOTE: This document applies to the HEAD of the source tree

If you are using a released version of Kubernetes, you should refer to the docs that go with that version.

The latest 1.0.x release of this document can be found [here](http://releases.k8s.io/release-1.0/docs/getting-started-guides/docker-multinode/deployDNS.md).

Documentation for other releases can be found at releases.k8s.io.

Deploy DNS

Get the template file

First of all, download the template dns rc and svc file from

skydns-rc template

skydns-svc template

Set env

Then you need to set DNS_REPLICAS , DNS_DOMAIN , DNS_SERVER_IP , KUBE_SERVER ENV.

$ export DNS_REPLICAS=1

$ export DNS_DOMAIN=cluster.local # specify in startup parameter `--cluster-domain` for containerized kubelet 

$ export DNS_SERVER_IP=10.0.0.10  # specify in startup parameter `--cluster-dns` for containerized kubelet 

$ export KUBE_SERVER=10.10.103.250 # your master server ip, you may change it

Replace the corresponding value in the template.

$ sed -e "s/{{ pillar\['dns_replicas'\] }}/${DNS_REPLICAS}/g;s/{{ pillar\['dns_domain'\] }}/${DNS_DOMAIN}/g;s/{kube_server_url}/${KUBE_SERVER}/g;" skydns-rc.yaml.in > ./skydns-rc.yaml

$ sed -e "s/{{ pillar\['dns_server'\] }}/${DNS_SERVER_IP}/g" skydns-svc.yaml.in > ./skydns-svc.yaml

Use kubectl to create skydns rc and service

$ kubectl -s "$KUBE_SERVER:8080" --namespace=kube-system create -f ./skydns-rc.yaml

$ kubectl -s "$KUBE_SERVER:8080" --namespace=kube-system create -f ./skydns-svc.yaml

Test if DNS works

Follow this link to check it out.