Linux服务器---mysql忘记密码-阿里云开发者社区

mysql忘记root密码
      如果不小心忘记了root密码，那么mysql就不能再登录了，这时就要重置root密码才行。通过下面的步骤，我们可以重新设置root密码。
1、退出mysql
      [root@localhost src]# service mysqld stop
      停止 mysqld：                                              [确定]
      [root@localhost src]#

2、进入sql安全模式，命令“/usr/bin/mysqld_safe --skip-grant-table &”
      [root@localhost src]# /usr/bin/mysqld_safe --skip-grant-table &
      [1] 6332
      [root@localhost src]# 180814 10:10:00 mysqld_safe Logging to '/var/log/mysqld.log'.
      180814 10:10:00 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql

3、无密码方式登录，命令“mysql –u root”
      [root@localhost src]# mysql -u root
      Welcome to the MySQL monitor.  Commands end with ; or \g.
      Your MySQL connection id is 1
      Server version: 5.1.71 Source distribution
      Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
      Oracle is a registered trademark of Oracle Corporation and/or its
      affiliates. Other names may be trademarks of their respective
      owners.
      Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
      mysql>

4、使用mysql，命令“use mysql；”
      mysql> use mysql;
      Reading table information for completion of table and column names
      You can turn off this feature to get a quicker startup with -A
      Database changed
      mysql>

5、重设root密码，命令“update user set password=password (“密码”) where user=’root’”
      mysql> update user set password=password('123456') where user='root';
      Query OK, 3 rows affected (0.00 sec)
      Rows matched: 3  Changed: 3  Warnings: 0
      mysql>

6、刷新
      mysql> flush privileges;
      Query OK, 0 rows affected (0.00 sec)

7、退出，重新登录
      [root@localhost src]# mysql -u root -p
      Enter password:        //这里输入新密码
      Welcome to the MySQL monitor.  Commands end with ; or \g.
      Your MySQL connection id is 2
      Sever version: 5.1.71 Source distribution
      Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
      Oracle is a registered trademark of Oracle Corporation and/or its
      affiliates. Other names may be trademarks of their respective
      owners.
      Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
      mysql>