「mysql」Mac mysql一路畅通式安装

折腾了一上午，遇到的各种错误：

错误一：安装后，终端执行 mysql 或者执行 `mysql -u root -p` 时报错：

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

错误二：为解决错误一，尝试执行

mysqld --user=root --skip-grant-tables &

报错：

2020-12-03T02:43:04.627716Z 0 [System] [MY-010116] [Server] /usr/local/mysql-8.0.22-macos10.15-x86_64/bin/mysqld (mysqld 8.0.22) starting as process 10786
2020-12-03T02:43:04.630514Z 0 [Warning] [MY-010091] [Server] Can't create test file /usr/local/mysql-8.0.22-macos10.15-x86_64/data/mysqld_tmp_file_case_insensitive_test.lower-test
2020-12-03T02:43:04.630524Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /usr/local/mysql-8.0.22-macos10.15-x86_64/data/ is case insensitive
2020-12-03T02:43:04.630895Z 0 [Warning] [MY-010122] [Server] One can only use the --user switch if running as root
2020-12-03T02:43:04.630938Z 0 [ERROR] [MY-013276] [Server] Failed to set datadir to '/usr/local/mysql-8.0.22-macos10.15-x86_64/data/' (OS errno: 13 - Permission denied)
2020-12-03T02:43:04.630991Z 0 [ERROR] [MY-010119] [Server] Aborting
2020-12-03T02:43:04.631143Z 0 [System] [MY-010910] [Server] /usr/local/mysql-8.0.22-macos10.15-x86_64/bin/mysqld: Shutdown complete (mysqld 8.0.22)  MySQL Community Server - GPL.

尝试了查到的各个方法无果。

错误三：还是为了解决错误一，尝试：

cd /usr/local/mysql/bin
sudo su 
输入开机密码 回车
sh-3.2# ./mysqld_safe --skip-grant-tables &

报错：

[3] 1602
sh-3.2# 2020-12-03T03:44:22.6NZ mysqld_safe Logging to '/usr/local/mysql-8.0.22-macos10.15-x86_64/data/ing-3.local.err'.
2020-12-03T03:44:22.6NZ mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql-8.0.22-macos10.15-x86_64/data
mysql2020-12-03T03:44:26.6NZ mysqld_safe mysqld from pid file /usr/local/mysql-8.0.22-macos10.15-x86_64/data/ing-3.local.pid ended
2020-12-03T03:46:02.6NZ mysqld_safe mysqld from pid file /usr/local/mysql-8.0.22-macos10.15-x86_64/data/ing-3.local.pid ended