CentOS/Redhat安装node_exporter
注：CentOS/Redhat 5要使用node_exporter 0.13版本，用0.16.0版本会报kernel太老，其它步骤同CentOS 6
node_exporter下载网址：
https://prometheus.io/download/
node_exporter-0.16.0.linux-amd64.tar.gz
我这边以/home示例，请根据实际情况具体调整
CentOS 7：
tar zxfv node_exporter-0.16.0.linux-amd64.tar.gz -C /home/
mv /home/node_exporter-0.16.0.linux-amd64 /home/node_exporter
vi /etc/systemd/system/node_exporter.service
[Unit] Description=Prometheus Node Exporter After=network.target
[Service] ExecStart=/home/node_exporter/node_exporter User=nobody
[Install] WantedBy=multi-user.target
:wq
systemctl start node_exporter
systemctl enable node_exporter
CentOS 6：
tar zxfv node_exporter-0.16.0.linux-amd64.tar.gz -C /home/
mv /home/node_exporter-0.16.0.linux-amd64 /home/node_exporter
yum install daemonize （如果没搭建本地yum，可自行下载适配的rpm包手动安装）
useradd prometheus -s /sbin/nologin
mkdir /var/log/prometheus
mkdir /var/run/prometheus
chown prometheus:prometheus /var/log/prometheus -R
chown prometheus:prometheus /var/run/prometheus -R
vi /etc/init.d/node_exporter
#!/bin/bash
Comments to support chkconfig chkconfig: 2345 98 02 description: prometheus service script
Source function library. . /etc/init.d/functions
Default variables prog_name="prometheus" config_file="/space/${prog_name}/${prog_name}.yml" prog_path="/space/${prog_name}/${prog_name}" data_path="/space/${prog_name}/data" pidfile="/var/run/${prog_name}.pid" prog_logs="/var/log/${prog_name}.log" options="--web.listen-address=10.29.60.62:9090 --config.file=${config_file} --web.enable-lifecycle --storage.tsdb.path=${data_path}" DESC="Prometheus Server"
Check if requirements are met [ -x "${prog_path}" ] || exit 1
RETVAL=0
start(){ action $"Starting $DESC..." su -s /bin/sh -c "nohup $prog_path $options >> $prog_logs 2>&1 &" 2> /dev/null RETVAL=$? PID=$(pidof ${prog_path}) [ ! -z "${PID}" ] && echo ${PID} > ${pidfile} echo [ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog_name return $RETVAL }
stop(){ echo -n $"Shutting down $prog_name: " killproc -p ${pidfile} RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog_name return $RETVAL }
restart() { stop start }
case "$1" in start) start ;; stop) stop ;; restart) restart ;; status) status $prog_path RETVAL=$? ;; *) echo $"Usage: $0 {start|stop|restart|status}" RETVAL=1 esac
:wq
chmod +x /etc/init.d/node_exporter
vi /etc/sysconfig/node_exporter
ARGS="" :wq
