mysql> show variables like '%dir%';+-----------------------------------------+----------------------------+| Variable_name | Value |+-----------------------------------------+----------------------------+| basedir | /usr || binlog_direct_non_transactional_updates | OFF || character_sets_dir | /usr/share/mysql/charsets/ || datadir | /var/lib/mysql/ || innodb_data_home_dir | || innodb_log_group_home_dir | ./ || innodb_max_dirty_pages_pct | 75 || lc_messages_dir | /usr/share/mysql/ || plugin_dir | /usr/lib/mysql/plugin/ || slave_load_tmpdir | /tmp || tmpdir | /tmp |+-----------------------------------------+----------------------------+11 rows in set (0.00 sec)
mysql的配置文件在?
/etc/mysql/my.cnf 如何设置让外部可以访问？ (转自：http://blog.chinaunix.net/uid-7934175-id-4289801.html） mysql 的root账户,我在连接时通常用的是localhost或127.0.0.1,公司的测试服务器上的mysql也是localhost所以我想访问无法访问,测试暂停. 解决方法如下: 1、修改表,登录mysql数据库,切换到mysql数据库,使用sql语句查看 "select host,user from user ;" mysql>use mysql; mysql>update user set host = '%' where user ='root'; mysql>select host, user from user; mysql>flush privileges; 注意:最后一句很重要,目的是使修改生效.如果没有写,则还是不能进行远程连接. 2、授权用户,你想root使用密码从任何主机连接到mysql服务器 mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'mysql的密码' WITH GRANT OPTION; mysql>flush privileges; 如果你想允许用户root从ip为192.168.12.16的主机连接到mysql服务器 mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.16' IDENTIFIED BY '123456' WITH GRANT OPTION; cyper实战： 之前mysql> select host,user from user;+-----------+------------------+| host | user |+-----------+------------------+| 127.0.0.1 | root || ::1 | root || localhost | debian-sys-maint || localhost | phpmyadmin || localhost | root || zerorun | root |+-----------+------------------+6 rows in set (0.00 sec)
执行grant命令后查看变化：
mysql> use mysql;Database changedmysql> grant all privileges on *.* to 'root'@'192.168.1.100' identified by '***' with grant option;Query OK, 0 rows affected (0.00 sec)mysql> select host,user from user;+---------------+------------------+| host | user |+---------------+------------------+| 127.0.0.1 | root || 192.168.1.100 | root || ::1 | root || localhost | debian-sys-maint || localhost | phpmyadmin || localhost | root || zerorun | root |+---------------+------------------+7 rows in set (0.00 sec)
可见这条命令其实就是在user表中新增了一条记录。
结果外部还是连不上，出现了和这里一样的问题：http://stackoverflow.com/questions/25156018/failed-to-connect-remote-mysql-server 解决方法是将/etc/mysql/my.cnf的 bind-address = 127.0.0.1 注释掉。 设置utf8编码 见这里：http://my.oschina.net/sldk/blog/266268 用php读写mysql开始乱码了（之前不乱），解决办法(参考：http://www.cnblogs.com/rickyNote/archive/2012/04/09/2438704.html） 在conn.php中$conn = mysql_connect($db_host, $db_user, $db_pwd);if (!$conn){ die('Could not connect: ' . mysql_error());}mysql_query("set character set 'utf8'"); //readmysql_query("set names 'utf8'"); //writemysql_select_db("crazy_blog", $conn); 好了，乱码问题得到解决。 第一次安装后root密码为空，修改密码： mysqladmin -uroot password yourpasshere