目录

• 说明
• 服务安装
• • mysql安装
  • mysqld_exporter 安装
  • prometheus安装
  • General安装

说明

mysqld_exporter 获取mysql日志
prometheus 根据mysqld_exporter提供的数据进行监控
General 为prometheus提供更高效的可视化界面

服务安装

mysql安装

参考：CentOS7离线安装mysql8

mysqld_exporter 安装

1. 获取安装包
   官网Git地址
   本教程采用mysqld_exporter-0.14.0.linux-amd64.tar.gz

2. 解压部署 我的mysql安装目录为/usr/local/mysql/ 不想为mysqld_exporter 单独创建文件路径 故放置于mysql目录下

   tar -zxvf mysqld_exporter-0.14.0.linux-amd64.tar.gz -C /usr/local/mysql/
   cd /usr/local/mysql/
   mv mysqld_exporter-0.14.0.linux-amd64 mysqld_exporter 
   

3. 连接mysql创建mysqld_exporter访问用户

   mysql -uroot -p
   

   CREATE USER 'exporter'@'localhost' IDENTIFIED BY 'exporter_pwd' WITH MAX_USER_CONNECTIONS 3;
   GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'exporter'@'localhost';
   exit;
   

4. 创建mysqld_exporter启动的配置文件

   cd mysqld_exporter
   vi my.cnf
   

   my.cnf

   [client]
   ## 
   user=exporter
   password=exporter_pwd
   host=localhost
   port=3306
   

5. 创建mysqld_exporter启动脚本

   vi start.sh
   

   #!/bin/bash
   
   #获取脚本文件所在的绝对路径
   SOURCE="${BASH_SOURCE[0]}"
   while [ -h "$SOURCE" ]; do
    	DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null && pwd )"
    	SOURCE="$(readlink "$SOURCE")"
   	[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
   done
   DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null && pwd )"
   #启动命令
   nohup $DIR/mysqld_exporter --config.my-cnf=$DIR/my.cnf --web.listen-address="0.0.0.0:9088" --log.level=info >$DIR/logs/mysqld_exporter.log 2>&1 &
   

   创建日志文件夹并赋予脚本可执行权限

   mkdir logs
   chmod a+x start.sh
   

prometheus安装

1. 获取安装包
   官网下载地址
   本次教程采用prometheus-2.34.0.linux-amd64.tar.gz
2. 安装部署

   tar -zxvf prometheus-2.34.0.linux-amd64.tar.gz  -C /usr/local/
   cd /usr/local/
   mv prometheus-2.34.0.linux-amd64 prometheus
   cd prometheus
   

3. 修改prometheus.yml配置文件 在尾部添加mysqld_exporter监控配置

   vi prometheus.yml
   

   targets地址为mysqld_exporter的web.listen-address参数，0.0.0.0转为实际IP

     - job_name: 'mysql'
       static_configs:
     	  - targets: ['172.16.72.150:9088']
   

   
4. 启动

   nohup ./prometheus --config.file=prometheus.yml --storage.tsdb.path=data >prometheus.log 2>&1 &
   

   命令启动不方便，可创建prometheus.service 启动 可创建一个专门用于该服务的用户

   #创建用户
   useradd  -s /sbin/nologin -M prometheus
   #创建数据目录
   cd /usr/local/prometheus
   mkdir data 
   #修改目录属主 
   chown -R prometheus:prometheus /usr/local/prometheus
   vi  /usr/lib/systemd/system/prometheus.service
   

   prometheus.service内容如下

   [Unit]
   Description=Prometheus
   Documentation=https://prometheus.io/
   After=network.target
   [Service]
   Type=simple
   User=prometheus
   ExecStart=/usr/local/prometheus/prometheus --config.file=/usr/local/prometheus/prometheus.yml --storage.tsdb.path=/usr/local/prometheus/data
   Restart=on-failure
   ExecReload=/bin/kill -s HUP $MAINPID
   ExecStop=/bin/kill -s QUIT $MAINPID
   [Install]
   WantedBy=multi-user.target
   

   systemctl daemon-reload
   systemctl enable prometheus
   systemctl start prometheus
   

General安装

1. 获取安装包
   官网

   wget https://dl.grafana.com/enterprise/release/grafana-enterprise-8.4.4.linux-amd64.tar.gz
   

2. 安装部署

   tar -zxvf grafana-enterprise-8.4.4.linux-amd64.tar.gz  -C /usr/local/
   cd /usr/local/
   mv grafana-8.4.4 grafana
   

3. 启动
   3.1 nohup 启动

   cd /usr/local/grafana/
   nohup ./bin/grafana-server 1>grafana.log 2>&1 &
   

   3.2 配置启动/停止脚本

   cd /usr/local/grafana/
   vi start.sh
   

   start.sh

   #!/bin/bash
   #获取脚本文件所在的绝对路径
   SOURCE="${BASH_SOURCE[0]}"
   while [ -h "$SOURCE" ]; do
    	DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null && pwd )"
    	SOURCE="$(readlink "$SOURCE")"
   	[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
   done
   DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null && pwd )"
   cd 
   nohup $DIR/grafana-server -homepath $DIR/../   >$DIR/../log.log 2>&1 &
   

   stop.sh

   #!/bin/bash
   pgrep grafana-server | xargs -exec kill -9
   

   chmod a+x stop.sh
   chmod a+x start.sh
   

4. 添加监控
   4.1 添加Prometheus 配置
   在Configuration中选择Add data source 选择 Prometheus
   
   
   
   拉到尾部save保存
   
   4.2 导入解析配置
   create->import 填写mysql的配置（7362） Load->prometheus 选择Prometheus->Import