Centos7安装Promethus监控mysql服务

一、安装配置
1、安装mysql_exporter

wget https://github.com/prometheus/mysqld_exporter/releases/download/v0.13.0/mysqld_exporter-0.13.0.linux-amd64.tar.gz
tar -zxvf mysqld_exporter-0.13.0.linux-amd64.tar.gz

2、改名并移动到指定目录

mv mysqld_exporter-0.13.0.linux-amd64 /usr/local/prometheus_exporter
cd /usr/local/prometheus_exporter
ln -s mysqld_exporter-0.13.0.linux-amd64/ mysqld_exporter

3、登录mysql为exporter创建账号并授权

# 创建数据库用户
mysql> CREATE USER 'exporter'@'localhost' IDENTIFIED BY '123456';
# 可查看主从运行情况查看线程，及所有数据库。
mysql> GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO 'exporter'@'localhost';

4、创建mysql配置文件、运行时可免密码连接数据库：

vim /usr/local/mysql_exporter/.my.cnf
[client]
user=exporter
password=123456

5、启动exporter客户端

nohup /usr/local/prometheus_exporter/mysqld_exporter/mysqld_exporter --config.my-cnf=/usr/local/prometheus_exporter/mysqld_exporter/.my.cnf  &
# 配置自启动
echo "##mysql exporter" >> /etc/rc.local
echo "nohup /usr/local/prometheus_exporter/mysqld_exporter/mysqld_exporter --config.my-cnf=/usr/local/prometheus_exporter/mysqld_exporter/.my.cnf >/dev/null 2>&1 &" >> /etc/rc.local
常用参数：
# 选择采集innodb
--collect.info_schema.innodb_cmp
# innodb存储引擎状态
--collect.engine_innodb_status
# 指定配置文件
--config.my-cnf=".my.cnf"

6、使用prometheus监控修改监控端配置文件：vim prometheus.yml

  # 添加作业并命名
  - job_name: 'mysql'
    # 静态添加node
    static_configs:
    # 指定监控端
    - targets: ['192.168.100.7:9104']

7、重启

systemctl restart prometheus

8、查看监控项

9、grafana导入模板