mysqld --initialize –usrer=mysql datadir=/var/lib/mysql 无法初始化错误

root@XXXX:/etc/mysql# mysqld --initialize --user=mysql --datadir=/var/lib/mysql

2020-01-21T07:50:04.937397Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).

2020-01-21T07:50:04.939503Z 0 [ERROR] --initialize specified but the data directory has files in it. Aborting.

2020-01-21T07:50:04.939532Z 0 [ERROR] Aborting

原因：

usermod -d /var/lib/mysql/ mysql

后mysql依然无法正常启动 

重制mysql

mysqld --initialize --user=mysql --datadir=/var/lib/mysql 失败原因是 /var/lib/mysql 已有数据

删除/var/lib/mysql下面的所有文件。

正常运行。