助力工业物联网，工业大数据之服务域：node_exporter插件【三十七】

前言

项目所需工具:
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06：node_exporter插件

• 目标：实现node_exporter插件的安装监控Linux指标

• 实施

  • 上传安装

    cd ~
    rz
    tar zxvf node_exporter-1.1.2.linux-amd64.tar.gz -C /opt/prometheus-2.26/
    mv /opt/prometheus-2.26/node_exporter-1.1.2.linux-amd64 /opt/prometheus-2.26/node_exporter
    

  • 注册

    # 创建并编辑文件
    vim /etc/systemd/system/node_exporter.service
    

    [Unit]
    Description=node_exporter
    Documentation=Prometheus node_exporter plugin
    
    [Service]
    ExecStart=/opt/prometheus-2.26/node_exporter/node_exporter
    Restart=on-failure
    [Install]
    WantedBy=multi-user.target
    

  • 启动

    # 设置开机自启动
    systemctl enable node_exporter
    # 启动服务
    systemctl start node_exporter
    # 查看服务状态
    systemctl status node_exporter
    

  • 配置Prometheus

    vim /opt/prometheus-2.26/prometheus.yml
    

    scrape_configs:
    
      - job_name: 'prometheus'
        static_configs:
          - targets: ['localhost:9090']
      # 增加以下内容
      - job_name: 'linux'
        static_configs:
        - targets: ['localhost:9100']
          labels:
            instance: node1  
    

    • 重启prometheus

      systemctl restart prometheus.service
      

  • 验证：http://node1:9090

    

    

    • 查看当前主机的CPU使用情况：node_cpu_seconds_total

      

    • 查看当前主机的CPU负载情况 ：node_load15

      

• 小结

  • 实现node_exporter插件的安装监控Linux指标

07：mysqld_exportor插件

• 目标：实现mysqld_exportor插件的安装监控MySQL指标

• 实施

  • 上传安装

    cd ~
    rz
    tar zxvf mysqld_exporter-0.13.0-rc.0.linux-amd64.tar.gz -C /opt/prometheus-2.26/
    mv /opt/prometheus-2.26/mysqld_exporter-0.13.0-rc.0.linux-amd64/ /opt/prometheus-2.26/mysqld_exporter/
    

  • 配置MySQL用户授权

    mysql -uroot -p
    SHOW VARIABLES LIKE 'validate_password%';
    set global validate_password_policy=LOW; 
    set global validate_password_length=6;
    # 授权
    GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'mysql_exporter'@'localhost' IDENTIFIED BY '123456' WITH MAX_USER_CONNECTIONS 3;
    flush privileges;
    

    • DDL：数据定义语言：建库建表
    • DML：数据操作语言：增删改
    • DQL：数据查询语言：查询
    • DCL：grant、revoke

  • 注册服务

    vim /etc/systemd/system/mysqld_exporter.service
    

    [Unit]
    Description=mysqld_exporter
    Documentation=Prometheus mysql exporter plugin
    
    [Service]
    Type=simple
    User=mysql
    Environment=DATA_SOURCE_NAME=mysql_exporter:123456@(localhost:3306)/
    ExecStart=/opt/prometheus-2.26/mysqld_exporter/mysqld_exporter --config.my-cnf /etc/my.cnf \
      --collect.slave_status \
      --collect.slave_hosts \
      --log.level=error \
      --collect.info_schema.processlist \
      --collect.info_schema.innodb_metrics \
      --collect.info_schema.innodb_tablespaces \
      --collect.info_schema.innodb_cmp \
      --collect.info_schema.innodb_cmpmem 
    Restart=on-failure
    [Install]
    WantedBy=multi-user.target
    

  • 启动服务

    # 设置开机自启动
    systemctl enable mysqld_exporter
    # 启动服务
    systemctl start mysqld_exporter
    # 查看服务状态
    systemctl status mysqld_exporter
    

  • 配置Prometheus

    vim /opt/prometheus-2.26/prometheus.yml
    

    scrape_configs:
      # 增加以下内容
      - job_name: 'mysql'
        scrape_interval: 1s
        static_configs:
        - targets: ['localhost:9104']
          labels:
            instance: 'mysqld_exporter'
    

    • 重启prometheus

      systemctl restart prometheus.service
      

  • 验证

    • mysql_exporter_collector_duration_seconds

      

• 小结

  • 实现mysqld_exportor插件的安装监控MySQL指标