记录未解决的问题：docker中无法启动mysqld

首先在docker中安装mysql server的包：

sudo yum install mysql
sudo yum install mariadb-server mariadb
/usr/libexec/mysqld --port 10002 --datadir=/home/ahfuzhang/data --bind-address=192.168.0.8 --socket=/home/ahfuzhang/data

出现以下错误信息：

191101 18:05:37 [Note] Plugin 'FEEDBACK' is disabled.
191101 18:05:37 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
191101 18:05:37 [Note] Server socket created on IP: '192.168.0.8'.
191101 18:05:37 [ERROR] Can't start server : Bind on unix socket: Address already in use
191101 18:05:37 [ERROR] Do you already have another mysqld server running on socket: /home/ahfuzhang/data ?
191101 18:05:37 [ERROR] Aborting

才是是docker所在的母机上已经装了一个mysql，所以unix socket这里冲突了。
没有找到关闭unix socket的选项，暂未解决此问题。

mysqld的命令参数行文档在此：
https://mariadb.com/kb/en/library/mysqld-options/