mac mysql忘记密码

今天想升级到 8.0，以前安装的 5.7 版，几年不用，密码早就忘记了，几年前曾经处理过，重新来过，重新记录一次

Mac mysql 忘记 root 密码

1. 停止 mysql

   $ mysql -V

    mysql  Ver 14.14 Distrib 5.7.21, for macos10.13 (x86_64) using  EditLine wrapper
   

   $ ps -ef |grep mysql

   $ sudo pkill mysql

2. 查找mysql 在哪里

   $ which mysql

    /usr/local/mysql/bin/mysql
   

3. 进入 mysql 目录

   cd /usr/local/mysql/bin/

   $ ls mysql*

   可以看到，mysql 的这些命令都在这里

    mysql				mysql_tzinfo_to_sql		mysqldump
    mysql_client_test_embedded	mysql_upgrade			mysqldumpslow
    mysql_config			mysqladmin			mysqlimport
    mysql_config_editor		mysqlbinlog			mysqlpump
    mysql_embedded			mysqlcheck			mysqlshow
    mysql_install_db		mysqld				mysqlslap
    mysql_plugin			mysqld-debug			mysqltest_embedded
    mysql_secure_installation	mysqld_multi			mysqlxtest
    mysql_ssl_rsa_setup		mysqld_safe
    dhbm-on-mac20180816:bin dhbm$ 
   

4. 进入 su

   $ sudo su

    sh-3.2#
   

5. 禁止mysql验证功能

   一定要 cd /usr/local/mysql/bin/ ，否则会报错 ./mysqld_safe: No such file or directory

   sh-3.2# ./mysqld_safe --skip-grant-tables &

    [1] 4297
    sh-3.2# 2023-03-24T01:16:50.6NZ mysqld_safe Logging to '/usr/local/mysql-5.7.21-macos10.13-x86_64/data/dhbm-on-mac20180816.local.err'.
    2023-03-24T01:16:50.6NZ mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql-5.7.21-macos10.13-x86_64/data
   

6. 启动 mysql

   sh-3.2# ./mysql

    Welcome to the MySQL monitor.  Commands end with ; or \g.
    Your MySQL connection id is 2
    Server version: 5.7.21 MySQL Community Server (GPL)
    
    Copyright (c) 2000, 2018, 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> 
   

7. 重设密码

   mysql> FLUSH PRIVILEGES;

   语法总是错误，先 HELP ，从 HELP 的例子抄写一个

   mysql> help SET PASSWORD

   mysql> SET PASSWORD FOR ‘root’@‘localhost’ = PASSWORD(‘Password@123’);

   mysql> exit

   sh-3.2# exit

8. $ mysql -u root -p

   使用新密码，OK ！