Mysql用户添加权限

参考：http://blog.sina.com.cn/s/blog_8c7ebe4101015tgp.html

• 赋给slave用户，test库的select权限
  grant select on test.* to ‘slave’@’%’;
  flush privileges;

• 赋给master用户，test库的select, insert, update权限
  grant select, insert, update on test.* to ‘master’@’%’;
  flush privileges;