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HomeDatabaseMysql Tutorialmysql数据库密码忘记找回方法 亲测可用

mysql数据库密码忘记找回方法 亲测可用

Jun 07, 2016 pm 02:56 PM
mysqlAvailablepasswordforgetretrievedatabasemethodyesterday

昨天把密码给忘了 网上找了一番找到了一个好办法! 无 linux下忘记了mysql的root用户密码解决办法: 一、以系统的root用户(什么,你的系统的root用户密码也忘了。那只好看我另外一篇linux下忘记root用户的解决办法了先解决这个问题)登陆系统,进入终端 [roo

昨天把密码给忘了 网上找了一番找到了一个好办法!
linux下忘记了mysql的root用户密码解决办法: 
  一、以系统的root用户(什么,你的系统的root用户密码也忘了。那只好看我另外一篇linux下忘记root用户的解决办法了先解决这个问题)登陆系统,进入终端 
  [root@localhost /]# 

  二、杀掉mysql进程 
  方法1、[root@localhost /]#killall mysqld 
  方法2、[root@localhost /]#ps -aux  //查看所有进程,找到mysql进程的pid 
  然后 
  [root@localhost /]#kill pid   //pid是mysql的进程号 

  三、用--skip-grant-tables参数启动mysqld 
  [root@localhost /]#/usr/local/mysql/bin/mysqld_safe --skip-grant-tables&  
  // 其中/usr..../bin是我的mysql安装目录 
  [root@localhost /]#/usr/local/mysql/bin/mysql  //进入mysql 
  mysql> use mysql   //切换到mysql database
  mysql> UPDATE user SET password=password('123456') WHERE user='root'; 
  //将root密码该为123456了 

  四、注意事项 
  The full command to load MySQL like this is: 
  mysqld_safe --skip-grant-tables --autoclose 
  (Editor's Note: Our technical reviewer found that he had to launch the mysqld_safe command 
  without the '--autoclose' flag, otherwise the daemon never started.) 
  这是国外网站说的,我没用autoclosa也成功了 
  但是我在执行/usr/local/mysql/bin/mysqld_safe --skip-grant-tables&即出现错误提示: 
  ./mysqld_safe 
  starting mysqld daemon with databases from /usr/local/var 
  STOPPING server from pid file /usr/local/var/localhost.localdomain.pid 
  mysqld  ended 
  然后进入/usr/local/var/ 
  vi ./localhost.localdomain.err 内容如下: 
  050410 04:02:59 mysqld started 
  050410 4:03:00 InnoDB:Operating system error number 13 in a file operation. 
  InnoDB:The error means mysqld does not have the access rights to 
  InnoDB:the directory. 
  InnoDB:File name ./ibdata1 
  InnoDB:File operation call:'create'. 
  InnoDB:Cannot continue operation. 
  050410 04:03:00 mysqld ended 
  怀疑是./var目录的访问权限,故如下操作: 
  chmod 777 ./var 
  然后重新执行后台,仍出以上错误,但在localhost.localdomain.err文件中的错误信息已改为找不到一个叫做 
  help.*的文件了(这个文件名我记不得了) 
  这是因为我的mysql安装目录的读写权限是这样造成的 
  mysql安装目录属于用户root,但是群组是mysql的 
  把群组也改为root即可。 
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