安装metrics

wget -c https://github.com/kubernetes-sigs/metrics-server/archive/v0.3.6.zip
unzip v0.3.6.zip
cd metrics-server-0.3.6/deploy/1.8+/
vim metrics-server-deployment.yaml 添加以下几行

        command:
        - /metrics-server
        - --kubelet-insecure-tls
        - --kubelet-preferred-address-types=InternalDNS,InternalIP,ExternalDNS,ExternalIP,Hostname

kubectl apply -f .

如果解析失败就把hosts解析写在这里
kubectl edit configmap coredns -n kube-system

        hosts {
           10.1.30.55   master
           10.1.30.37   client_4
        }