在Docker安装mysql后，启动mysql后，会马上就关闭，通过打印日志，发现报错如下：

2025-07-14 13:03:04+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.44-1.el7 started.
2025-07-14 13:03:04+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config
        command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.VpxNYohnfk
        mysqld: Can't read dir of '/etc/mysql/conf.d/' (Errcode: 2 - No such file or directory)
mysqld: [ERROR] Fatal error in defaults handling. Program aborted!
2025-07-14 13:09:50+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.44-1.el7 started.
2025-07-14 13:09:50+00:00 [ERROR] [Entrypoint]: mysqld failed while attempting to check config
        command was: mysqld --verbose --help --log-bin-index=/tmp/tmp.ZcMd2AVzrQ
        mysqld: Can't read dir of '/etc/mysql/conf.d/' (Errcode: 2 - No such file or directory)
mysqld: [ERROR] Fatal error in defaults handling. Program aborted!

这是由于运行容器时mysql的配置位置错误

我是这样配置的：

docker run -p 3306:3306 --name mysql -v /mydata/mysql/log:/var/log/mysql -v /mydata/mysql/data:/var/lib/mysql -v /mydata/mysql/conf:/etc/mysql -e MYSQL_ROOT_PASSWORD=root -d mysql:5.7

其实应该这么配置：

docker run -p 3306:3306 --name mysql -v /mydata/mysql/log:/var/log/mysql -v /mydata/mysql/data:/var/lib/mysql -v /mydata/mysql/conf:/etc/mysql/conf.d -e MYSQL_ROOT_PASSWORD=root -d mysql:5.7

区别在于：-v /mydata/mysql/conf:/etc/mysql/conf.d ，这部分和之前不一样。

具体可以参考：ERROR: mysqld failed while attempting to check config-CSDN博客