• promethus监控mysql


    一、mysqld_exporter安装

    下载页面

    https://github.com/prometheus/mysqld_exporter/releases

    下载最新版本

    https://github.com/prometheus/mysqld_exporter/releases/download/v0.12.0/mysqld_exporter-0.12.0.linux-amd64.tar.gz

    登录到mysql服务器,解压,并运行

    # 解压
    tar zxvf mysqld_exporter-0.12.0.linux-amd64.tar.gz -C /usr/src/
    cd /usr/src/mysqld_exporter-0.12.0.linux-amd64
    
    # 创建目录,复制文件
    mkdir -p /etc/mysqld_exporter/bin/
    mkdir -p /etc/mysqld_exporter/conf
    cp mysqld_exporter /etc/mysqld_exporter/bin/

    二、mysql授权

    mysqld_exporter需要连接Mysql,首先为它创建用户并赋予所需的权限:

    grant replication client,process on *.* to exporter@'%' identified by '27dc703b';
    grant select on performance_schma.* to exporter@'%';
    flush PRIVILEGES;

    三、运行mysqld_exporter

     新建配置文件

    vi /etc/mysqld_exporter/conf/my.cnf

    内容如下:

    [client]
    user=exporter
    password=27dc703b
    port=3306
    host=127.0.0.1

    启动进程

    /etc/mysqld_exporter/bin/mysqld_exporter --config.my-cnf="/etc/mysqld_exporter/conf/my.cnf" --web.listen-address=":9104"

    观察是否有报错信息,如果没有报错信息,就可以封装service服务了

    四、mysqld_exporter封装service

    vim /lib/systemd/system/mysqld_exporter.service

    内容如下:

    [Unit]
    Description=mysqld monitor
    After=network.target
    
    [Service]
    ExecStart=/etc/mysqld_exporter/bin/mysqld_exporter --config.my-cnf="/etc/mysqld_exporter/conf/my.cnf" --web.listen-address=":9104"
    ExecStop=-/sbin/start-stop-daemon --quiet --stop --retry QUIT/5
    TimeoutStopSec=5
    KillMode=mixed
    
    [Install]
    WantedBy=multi-user.target

    重新加载service配置文件,设置开机自启动,并启动服务

    systemctl daemon-reload
    systemctl enable mysqld_exporter.service
    systemctl start mysqld_exporter.service

    查看端口

    root@ubuntu:~# netstat -anpt|grep mysqld_exporte
    tcp6       0      0 :::9104                 :::*                    LISTEN      3253/mysqld_exporte

    使用网页访问metrics

    http://192.168.1.24:9104/metrics

    效果如下:

     如果数据输出正常,则表示成功。

    五、promethus增加job

    vim /opt/prometheus/prometheus.yml

     增加以下内容:

    - job_name: mysqld_exporter
    static_configs:
      - targets:
        - 192.168.1.24:9104
        labels:
          instance: mysql-24

    重启prometheus

    root@ubuntu:/opt/prometheus# docker ps |grep prometheus
    0fa256f85750        prom/prometheus     "/bin/prometheus --c…"   About an hour ago   Up 29 seconds       0.0.0.0:9090->9090/tcp   wizardly_kirch
    
    root@ubuntu:/opt/prometheus# docker restart 0fa256f85750

    访问页面:

    http://192.168.1.24:9090/targets

    确保mysqd_exporter状态为UP

    六、Grafana导入Dashboards

    下载json文件

    https://files.cnblogs.com/files/xiao987334176/MySQL%E7%9B%91%E6%8E%A7-1577183740876.zip

    解压之后,里面就是一个json文件

    点击import

    上传json文件,设置Name,选择prometheus,点击import

     

     等待一段时间,数据多了之后,效果如下:

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  • 原文地址:https://www.cnblogs.com/xiao987334176/p/11181033.html
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