Prometheus安装部署 | Nes的草稿箱

linux

发布日期: 2021-08-22

文章字数: 963

阅读时长: 5 分

阅读次数:

一、基础环境

环境/组件	版本	下载地址
操作系统	CentOS 7.3	http://archive.kernel.org/centos-vault/7.3.1611/isos/x86_64/CentOS-7-x86_64-DVD-1611.iso
Prometheus	2.6.0	https://prometheus.io/download/#prometheus
go	1.11.4	https://golang.org/dl/
Grafana	5.4.2	https://dl.grafana.com/oss/release/grafana-5.4.2-1.x86_64.rpm

二、安装go

1、解压安装

tar -C /usr/local/ -xvf go1.11.4.linux-amd64.tar.gz

2、配置环境变量

vim /etc/profile

export GOROOT=/usr/local/go
export GOBIN=$GOROOT/bin
export GOPATH=$GOROOT/path

export PATH=$PATH:$GOBIN:$GOPATH/bin

source /etc/profile

3、验证

go version

三、安装Prometheus

1、安装

cd

tar -xvf Prometheus-2.6.0.linux-amd64.tar.gz

mv Prometheus-2.6.0.linux-amd64 /usr/local/prometheus-2.6.0

ln -sv /usr/local/prometheus-2.6.0 /usr/local/prometheus

2、启动

命令行方式
普罗米修斯默认配置文件

cd /usr/local/prometheus/
vim prometheus.yml

# 检测配置文件语法
./promtool check config prometheus.yml

# 测试启动
/usr/local/prometheus/prometheus --config.file=/usr/local/prometheus/prometheus.yml

启动脚本

centos6
vim /etc/init.d/prometheus

#!/bin/bash
### BEGIN INIT INFO
# Provides:          prometheus
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts prometheus
# Description:       starts the prometheus Process Manager daemon
### END INIT INFO
prefix=/usr/local/prometheus
exec_prefix=${prefix}
prometheus_BIN=${exec_prefix}/prometheus
prometheus_LOG=${exec_prefix}/prometheus.log
prometheus_PID=${exec_prefix}/pid
prometheus_CONF=${exec_prefix}/prometheus.yml
prometheus_DB="/data1/prometheus_data"
prometheus_PORT=51724

case "$1" in
  start)
    if [[ -f $prometheus_PID ]]
      then
      if [[ ! -z `cat $prometheus_PID` ]]
        then
        echo -n "prometheus is running"
        exit 0
      fi
    fi
    echo -e "Starting prometheus \n"
        # --storage.tsdb.retention=365d 可选清理时间
    /usr/bin/nohup $prometheus_BIN --config.file="${prometheus_CONF}" --web.listen-address="0.0.0.0:${prometheus_PORT}" --storage.tsdb.path="${prometheus_DB}" --web.enable-lifecycle > $prometheus_LOG 2>&1 &
    echo $! > $prometheus_PID
  ;;
  stop)
    if [[ ! -z `cat $prometheus_PID` ]]
      then
      echo -e "Stop prometheus \n"
      cat $prometheus_PID | xargs kill -9
    else
      echo -n "prometheus not running"
    fi
    echo > $prometheus_PID
  ;;
  reload)
    if [[ -f $prometheus_PID ]]
      then
      kill -1 `cat $prometheus_PID`
    fi
  ;;
  status)
    if [[ -z `cat $prometheus_PID` ]]
      then
      echo "prometheus is stopped"
    else
        echo "prometheus is running"
    fi
  ;;
  restart)
    $0 stop
    $0 start
  ;;
  *)
    echo "Usage: $0 {start|stop|reload|status|restart}"
    exit 1
  ;;
esac

赋予权限
chmod 755 /etc/init.d/prometheus

centos7

vim /etc/systemd/system/prometheus.service

[Unit]
Description=Prometheus Server
After=network.target

[Service]
WorkingDirectory=/usr/local/prometheus/
ExecStart=/usr/local/prometheus/prometheus --config.file=/usr/local/prometheus/prometheus.yml --web.listen-address=:9090 --web.enable-lifecycle
User=root

[Install]
WantedBy=multi-user.target

赋予权限

chmod 755 /etc/systemd/system/prometheus.service

systemctl daemon-reload

service promethues start

3、验证

浏览器打开IP:9090端口即可打开普罗米修斯自带的监控页面

四、安装Grafana

普罗米修斯默认的页面可能没有那么直观，我们可以安装grafana使监控看起来更直观

1、安装

rpm -ivh --nodeps grafana-5.4.2-1.x86_64.rpm

2、启动

安装插件

grafana-cli plugins install grafana-piechart-panel 1.3.8

启动

/bin/systemctl daemon-reload
/bin/systemctl enable grafana-server.service
/bin/systemctl start grafana-server.service

3、访问grafana

浏览器访问IP:3000端口，即可打开grafana页面，默认用户名密码都是admin，初次登录会要求修改默认的登录密码

4、添加prometheus数据源

（1）点击主界面的“Add data source”

（2）选择Prometheus

（3）Dashboards页面选择”Prometheus 2.0 Stats”

（4）Settings页面填写普罗米修斯地址并保存

（5)切换到我们刚才添加的”Prometheus 2.0 Stats”即可看到整个监控页面

五、一些常用监控举例

1、监控linux机器（node-exporter）

下载

wget https://github.com/prometheus/node_exporter/releases/download/v1.0.1/node_exporter-1.0.1.linux-amd64.tar.gz

tar zxvf node_exporter-1.0.1.linux-amd64.tar.gz

mv node_exporter-1.0.1.linux-amd64 /usr/local/node_exporter-1.0.1

ln -s /usr/local/node_exporter-1.0.1 /usr/local/node_exporter

chown -R root.root /usr/local/node_exporter-1.0.1

启动脚本
vim /etc/systemd/system/node-exporter.service

[Unit]
Description=Prometheus Node Exporter
After=network.target

[Service]
WorkingDirectory=/usr/local/node_exporter/
ExecStart=/usr/local/node_exporter/node_exporter --web.listen-address=:12123
User=root

[Install]
WantedBy=multi-user.target

启动方式

systemctl daemon-reload

service node-exporter start

chkconfig node-exporter on

访问验证
http://192.168.12.34:12123/metrics

普罗米修斯配置文件添加监控项

vim /usr/local/Prometheus/prometheus.yml
# 默认node-exporter端口为9100

  - job_name: 'node_exporter'
    static_configs:
    - targets: ['127.0.0.1:12123']
      labels:
        instance: Prometheus