$ mysql.server start

# 启动失败 /usr/local/mysql/data 未创建
Starting MySQL
./usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 653: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: No such file or directory
Logging to '/usr/local/mysql/data/starrydeMacBook-Pro.local.err'.
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 144: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: No such file or directory
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 199: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: No such file or directory
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 916: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: No such file or directory
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 144: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: No such file or directory
 ERROR! The server quit without updating PID file (/usr/local/mysql/data/starrydeMacBook-Pro.local.pid).

#  执行以下命令
mysqld --initialize-insecure

# 再次启动
mysql.server start

# 启动失败
Starting MySQL
./usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 653: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: Permission denied
Logging to '/usr/local/mysql/data/starrydeMacBook-Pro.local.err'.
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 144: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: Permission denied
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 199: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: Permission denied
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 916: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: Permission denied
/usr/local/Cellar/mysql/8.0.28_1/bin/mysqld_safe: line 144: /usr/local/mysql/data/starrydeMacBook-Pro.local.err: Permission denied
 ERROR! The server quit without updating PID file (/usr/local/mysql/data/starrydeMacBook-Pro.local.pid).

# 授权
sudo chmod -R 777 /usr/local/mysql/data

# 再次启动
mysql.server start

# 启动失败
Starting MySQL
... ERROR! The server quit without updating PID file (/usr/local/mysql/data/starrydeMacBook-Pro.local.pid).

# 查看错误日志
cd /usr/local/mysql/data
cat XXXX-Pro.local.err

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'