╰─➤  mysql -V                                                                                                                
mysql  Ver 8.0.33 for macos13.3 on arm64 (Homebrew)

mysql.server status
mysql.server stop

skip-grant-tables 启动mysql

─➤  /opt/homebrew/Cellar/mysql/8.0.33_3/bin/mysqld_safe --skip-grant-tables
2023-07-21T07:00:37.264746Z mysqld_safe Logging to '/opt/homebrew/var/mysql/M1os.err'.
2023-07-21T07:00:37.374216Z mysqld_safe Starting mysqld daemon with databases from /opt/homebrew/var/mysql

mysql -uroot

清空root密码

mysql> UPDATE mysql.user SET authentication_string=null WHERE User='root';
mysql> flush privileges;
mysql> exit;

更新密码

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
mysql> flush privileges;
mysql> exit;

• root'@'localhost' 指定了要修改的用户为 root 用户，并且限定了该用户只能从本地主机登录。
• IDENTIFIED WITH caching_sha2_password 是指定了验证插件为 caching_sha2_password,一种密码验证插件

参考

1. macos上 mysql 8.0 重置密码记录