网上很多方法都是：/usr/local/mysql/scripts/mysql_install_db --user=mysql

但是很有可能报错，找不到bin目录中的my_print_defaults

错误信息： 

FATALERROR:Couldnotfind./bin/my_print_defaults

If you are using a binary release, you must run this script from

within the directory the archive extracted into. If you compiled

MySQL yourself you must run 'make install' first. 

       或

[root@bogon scripts]# /usr/local/mysql/scripts/mysql_install_db --user=mysql&

[1] 16874

[root@bogon scripts]#

FATAL ERROR: Could not find ./bin/my_print_defaults

If you compiled from source, you need to run 'make install' to

copy the software into the correct location ready for operation.

If you are using a binary release, you must either be at the top

level of the extracted archive, or pass the --basedir option

pointing to that location.

 

解决方法：

 [root@bogon scripts]# /usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data &(这点非常重要)