CentOS/Redhat安装node_exporter

buhong

　　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
/etc/init.d/node_exporter start
ps -ef | grep node_exporter
chkconfig --level 35 node_exporter on