Kubernetes 安装 kube-dns 服务发现

在各个 node 节点上
vim /etc/kubernetes/kubelet

添加如下配置 其他配置为自动生成的建议不要修改

KUBELET_ARGS="--cluster-dns=10.254.10.2 --cluster-domain=sky --allow-privileged=true"

master 上
etcdctl mk /skydns/config '{"dns-addr":"10.254.10.2:53","ttl":3600,"domain":"sky."}'

编辑 skydns_dpm.yaml 文件
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kube-dns
namespace: kube-system
spec:
replicas: 1
template:
metadata:
labels:
name: kube-dns
tier: platform
subsystem: unconfirmed
k8s-app: kube-dns
version: v9
partition: "no"
kubernetes.io/cluster-service: "true"
spec:
containers:
- name: kube2sky
#填写你自己的镜像名称
image: gcr.io/google_containers/kube2sky:1.11
resources:
limits:
cpu: 100m
memory: 50Mi
args:
# 同 etcd 中配置的/skydns/config 中的 domain 名
- -domain=sky
# master 地址
- --kube_master_url=http://192.168.1.120:8080
# etcd 地址
- -etcd-server=http://192.168.1.120:2379
- name: skydns
#你的镜像名称
image: gcr.io/google_containers/skydns:2015-10-13-8c72f8c
resources:
limits:
cpu: 100m
memory: 50Mi
args:
# command = "/skydns"
# etcd 地址
- -machines=http://192.168.1.120:2379
- -addr=0.0.0.0:53
- -ns-rotate=false
#同 etcd 中配置的/skydns/config 中的 domain 名，最后有‘点’
- -domain=sky.
ports:
- containerPort: 53
name: dns
protocol: UDP
- containerPort: 53
name: dns-tcp
protocol: TCP
dnsPolicy: Default # Don't use cluster DNS.

编辑 skydns-svc.yaml

文件
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: 10.254.10.2
ports:

• name: dns
  port: 53
  protocol: UDP
• name: dns-tcp
  port: 53
  protocol: TCP