官网下载地址：https://prometheus.io/download/
选择对应的系统版本
官网提供的是压缩包，点击旁边的github地址
github页面显示的有yum安装和docker安装，这里选择“RHEL/CentOS/Fedora”
进入到yum方式安装页面
根据系统版本下载repo文件，我这里是centos7
# curl -Lo /etc/yum.repos.d/_copr_ibotty-prometheus-exporters.repo https://copr.fedorainfracloud.org/coprs/ibotty/prometheus-exporters/repo/epel-7/ibotty-prometheus-exporters-epel-7.repo
# yum makecache
# yum install node_exporter -y
常用命令
# systemctl start node_exporter.service
# systemctl status node_exporter.service
# systemctl enable node_exporter.service