执行命令:brew info mysql

按照说明做。由公式中的描述可知:

Set up databases to run AS YOUR USER ACCOUNT with:
    unset TMPDIR
    mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp

To set up base tables in another folder, or use a different user to run
mysqld, view the help for mysql_install_db:
    mysql_install_db --help

and view the MySQL documentation:
  * http://dev.mysql.com/doc/refman/5.5/en/mysql-install-db.html
  * http://dev.mysql.com/doc/refman/5.5/en/default-privileges.html

解决方案围绕:

修改MySQL的权限 sudo chown -R _mysql:mysql /usr/local/var/mysql 启动MySQL进程 sudo mysql。服务器启动

如果上面的命令不能帮你解决这个问题，那就试着指定主机

mysql -u root -p h127.0.0.1

我经历了这个问题，我设法运行mysql服务器使用下面的解决方案

通过.dmg(https://dev.mysql.com/downloads/mysql/5.7.html)安装mysql，你会在系统首选项中看到mysql服务面板，然后从面板中启动mysql并尝试

Mysql -u root -p

附图供参考

运行sudo chown _mysql /usr/local/var/mysql/*在尝试了所有这些SO答案中的大量选项后终于帮助了我。权限问题可能是由于机器关闭不当引起的。

对于我的例子，只需将host指定为127.0.0.1，而不是localhost:

$ bin/mysql -uroot -p -h127.0.0.1
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.26

Copyright (c) 2000, 2021, Oracle and/or its affiliates.

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>

在尝试了许多解决方案之后，似乎最终成功的是通过IP连接。不再文件套接字被随机删除。

只需更新MySQL客户端配置(例如/usr/local/etc/my.cnf):

[client]
port = 3306
host=127.0.0.1
protocol=tcp