补充链接:Windows下忘记密码处理:
场景描述:
Linux环境下忘记 root 密码,
1. 修改MySQL的登录设置:
# vim /etc/my.cnf 在[mysqld]的段中加上一句:skip-grant-tables 例如: [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock skip-grant-tables 保存并且退出vi。2. 重新启动mysqld
# service mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]3. 登录并修改MySQL的root密码
# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 to server version: 3.23.56 Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> USE mysql ; Database changed mysql> UPDATE user SET Password = password ( 'new-password' ) WHERE User = 'root' ; Query OK, 0 rows affected (0.00 sec) Rows matched: 2 Changed: 0 Warnings: 0 mysql> flush privileges ; Query OK, 0 rows affected (0.01 sec) mysql> quit
4.将MySQL的登录设置修改回来
# vim /etc/my.cnf 将刚才在[mysqld]的段中加上的skip-grant-tables删除 保存并且退出vim5.重新启动mysqld
# service mysqld restart Stopping MySQL: [ OK ] Starting MySQL: [ OK ]************************************************
6. 配置mysql允许远程连接:
允许远程用户登录访问mysql的方法
需要手动增加可以远程访问数据库的用户。方法一(不推荐) 本地登入mysql,更改 "mysql" 数据库里的 "user" 表里的 "host" 项,将"localhost"改为"%"
#mysql -u root -proot
mysql>use mysql;mysql>update user set host = '%' where user = 'root';mysql>select host, user from user;
方法二 直接授权(推荐)
从任何主机上使用root用户,密码:youpassword(你的root密码)连接到mysql服务器:(首先登陆Linux服务器,填写下面代码即可)
[root@localhost software]# mysql -u root -proot mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;mysql>FLUSH PRIVILEGES;
操作完后切记执行以下命令刷新权限
FLUSH PRIVILEGES;
方法三:终极方法
找到mysql.cnf
注释bind-address = 127.0.0.1
改为bind-address = 0.0.0.0
重启服务。
方法四: 给指定用户授权 --不需要刷新,重启数据库
mysql> use mysql;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> update user set host = '%' where user = '你的用户';Query OK, 1 row affected (0.00 sec)Rows matched: 1 Changed: 1 Warnings: 0