yum install git -y
git clone https://github.com/kubernetes-incubator/metrics-server.git
cd metrics-server/deploy/1.8+/

修改metrics-server-deployment.yaml 添加command，替换image，完整文件如下

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: metrics-server
  namespace: kube-system
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: metrics-server
  namespace: kube-system
  labels:
    k8s-app: metrics-server
spec:
  selector:
    matchLabels:
      k8s-app: metrics-server
  template:
    metadata:
      name: metrics-server
      labels:
        k8s-app: metrics-server
    spec:
      serviceAccountName: metrics-server
      volumes:
      # mount in tmp so we can safely use from-scratch images and/or read-only containers
      - name: tmp-dir
        emptyDir: {}
      containers:
      - name: metrics-server
        image: gcr.azk8s.cn/google_containers/metrics-server-amd64:v0.3.3
        command:
        - /metrics-server
        - --kubelet-insecure-tls
        - --kubelet-preferred-address-types=InternalIP
        imagePullPolicy: Always
        volumeMounts:
        - name: tmp-dir
          mountPath: /tmp

kubectl apply -f /root/metrics-server/deploy/1.8+/
kubectl -n kube-system get pods | grep metrics
kubectl get apiservice | grep metrics
[root@k8s03 deploy]# kubectl top nodes
NAME    CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%   
k8s01   259m         12%    1287Mi          68%       
k8s02   215m         10%    1183Mi          62%       
k8s03   291m         14%    1207Mi          64% 

查看Metrics API数据

启动代理

kubectl proxy --port=8080
curl localhost:8080/apis/metrics.k8s.io/v1beta1

小技巧，git单独下载指定文件夹

mkdir work && cd work
git init
git remote add -f origin https://github.com/kubernetes-incubator/metrics-server.git
git config core.sparsecheckout true
echo deploy/1.8+ >> .git/info/sparse-checkout
git pull origin master