Helping the Industrial Internet of Things, the service domain of industrial big data: node_exporter plug-in [37]

foreword

Tools required for the project:
Link: https://pan.baidu.com/s/1sIa8nninf2Fz6YqE3vUpqQ?pwd=5wr3
Extraction code: 5wr3
– Shared from Baidu Netdisk super member V4

06: node_exporter plugin

• Goal : To realize the installation of node_exporter plug-in and monitor Linux indicators

• implement

  • Upload and install

    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
    

  • register

    # 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
    

  • start up

    # 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
    

  • Configure 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  
    

    • restart prometheus

      systemctl restart prometheus.service
      

  • Verification : http://node1:9090

    

    

    • View the CPU usage of the current host: node_cpu_seconds_total

      

    • View the CPU load of the current host: node_load15

      

• summary

  • Realize the installation and monitoring of Linux indicators of node_exporter plug-in

07: mysqld_exportor plugin

• Goal : To realize the installation of mysqld_exportor plug-in and monitor MySQL indicators

• implement

  • Upload and install

    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/
    

  • Configure MySQL user authorization

    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: Data Definition Language: Building Databases and Tables
    • DML: data manipulation language: add, delete, modify
    • DQL: Data Query Language: Query
    • DCL：grant、revoke

  • registration service

    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
    

  • start service

    # 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
    

  • Configure 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'
    

    • restart prometheus

      systemctl restart prometheus.service
      

  • verify

    • mysql_exporter_collector_duration_seconds

      

• summary

  • Realize the installation and monitoring of MySQL indicators of mysqld_exportor plug-in