Prometheus监控MySQL容器

操作系统：centos7

1、准备mysql镜像及mysqld_exporter安装包

2、构建镜像

      1）编写Dockerfile

~]# mkdir -p /data/file
~]# cd /data/file/
file]# vim Dockerfile

FROM mysql:5.7.21
ADD mysqld_exporter-0.13.0-rc.0.linux-amd64.tar.gz /prometheus-monitor/exporter
ADD my.cnf /prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64/
ADD start.sh /prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64/
RUN chmod +x /prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64/mysqld_exporter
RUN chmod +x /prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64/start.sh
WORKDIR /prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64/
CMD ["/prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64/start.sh"]
expose 9080

      2）准备start.sh脚本

service mysql start
./mysqld_exporter --config.my-cnf=my.cnf --web.listen-address=:9080

      3）准备my.cnf文件

[client]
host=localhost
user=exporter
password=123123

      4）执行命令构建镜像

# docker build -t mysql_exporter .

3、启动容器并创建exporter用户授权权限

# docker run -itd --name=mysql -p 9080:9080 -e mysql_root_password=123123 mysql_exporter
# docker exec -it mysql bash

root@85f367fbc12f:/prometheus-monitor/exporter/mysqld_exporter-0.13.0-rc.0.linux-amd64# mysql -uroot -p123123
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> create user 'exporter' identified by '123123';
Query OK, 0 rows affected (0.00 sec)

mysql> grant process,replication client,select on *.* to 'exporter'@'%';
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

mysql> exit

重启容器

# docker restart mysql

访问：http://192.168.53.7:9080/metrics

通过访问该地址可以看到mysql监控的相关指标

将此监控纳入外部prometheus服务上，并使用grafana进行展示即完成

重启Prometheus服务