client 配置：准备一台linux，不在k8s集群中，安装node_exporter
wget https://github.com/prometheus/node_exporter/releases/download/v1.6.0/node_exporter-1.6.0.linux-amd64.tar.gz tar -xvf node_exporter-1.6.0.linux-amd64.tar.gz mv node_exporter-1.6.0.linux-amd64 /usr/local/node_exporter
/usr/local/node_exporter# ./node_exporter &
server配置：k8s集群上部署了promethueus