Mac platform forgets the root password of MySQL

    MySQL The database has not been used for a long time , Use... In recent days MySQL, Find out root I forgot the password . But also good , have access to MySQL Security mode to modify root password . The specific method is as follows ：

1 stop it MySQL service

Method 1 ： Close with command

    In the black frame , Enter the following command , To close MySQL service , Pictured (1) Shown .

sudo /usr/local/mysql/support-files/mysql.server stop

chart (1) Use stop Order to shut down MySQL service

Method 2 ： stay [ System preferences ] Inside closed

chart (2) stay [ System preferences ] in , Click on MySQL Icon

chart (3) Click on [Stop MySQL Server]

chart (4) It's closed MySQL service

    If you click [Stop MySQL Server] The button doesn't respond , Then enter the following command in the command line , avoid MySQL Restart again and again ：

sudo launchctl unload -w /Library/LaunchDaemons/com.oracle.oss.mysql.mysqld.plist
sudo pkill mysqld

2 Enter safe mode

##  Get into MySQl Installation directory 
cd /usr/local/mysql/bin

##  Turn on safe mode 
sudo ./mysqld_safe --skip-grant-tables --skip-networking

3 modify root password

3.1 update command

Reopen a black box console , Enter the following command :

##  With root Enter the database as , If there is a password prompt , Then go straight back 
./mysql -u root

##  Use the name mysql The database of 
use mysql;

##  Update the password 
update user set authentication_string=password(' Your password ') where user='root';

##  Save password 
flush privileges;

##  sign out 
exit

3.2 alter command

    Press Ctrl+Z Close the black window in safe mode , Re enter mySQL database , Use alter command , Change the password for the second time ( The password here is the same as the first time ), as follows ：

cd /usr/local/mysql/bin
./mysql -u root -p
  Enter the new password just set 
alter user 'root'@'localhost' identified by ' Your password '; 
flush privileges;
exit 

   

• situation 1） Forgotten password ：
  Enter safe mode , Password to be set 2 Time , For the first time update command , The second, alter command .
• situation 2） Update the password ：
  If you know the old password , You don't need to enter safe mode , Just use alter Just modify the command .

This method , in the light of MySQL v5.7.31 ~ v8 edition .