官方：

• download: https://dev.mysql.com/downloads/mysql/
• mysql参考文档：https://dev.mysql.com/doc/

环境：

• macOS Mojave 10.14.2

用户：

• 管理员用户，期间没有新建mysql用户或组

安装包：

• mysql-8.0.13-macos10.14-x86_64.tar.gz

安装配置

1.解压
下载的tar.gz解压后，并移动到/usr/local/mysql，目录结构如下：

$ pwd
/usr/local
$ tree mysql -L 1
mysql
├── LICENSE
├── LICENSE.router
├── README
├── README.router
├── bin
├── data
├── docs
├── include
├── lib
├── man
├── run
├── share
└── support-files

实际上是按照Unix目录结构的规范，建议这么做。
本人实际操作过程中，只是通过sudo ln -s ${MYSQL_HOME} /usr/local/mysql，创建了一个软链接。
解压命令：tar -xzvf ${filename}

2.修改权限：sudo chown -R usr:group /usr/local/mysql

3.初始化

$ cd /usr/local/mysql
$ bin/mysqld --initialize --user=ephemerid --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
2019-01-20T05:50:19.601053Z 0 [System] [MY-013169] [Server] /Workspaces/programfiles/mysql-8.0.13-macos10.14-x86_64/bin/mysqld (mysqld 8.0.13) initializing of server in progress as process 1045
2019-01-20T05:50:19.603274Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
2019-01-20T05:50:21.143953Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: A_mBvrbnD0*r
2019-01-20T05:50:22.000946Z 0 [System] [MY-013170] [Server] /Workspaces/programfiles/mysql-8.0.13-macos10.14-x86_64/bin/mysqld (mysqld 8.0.13) initializing of server has completed

ephemerid是我的用户名，改成自己的。
后面两个选项的含义，见后文MY-011011。
前面提到过，本人使用了软链接，所以控制台信息中看到的mysql实际的目录。
注意这个“A temporary password is generated for root@localhost”

5.启动

$ support-files/mysql.server start
Starting MySQL
. SUCCESS! 

6.连接及修改初始密码

$ bin/mysql -uroot -pA_mBvrbnD0*r
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.13

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> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'pass123456';
Query OK, 0 rows affected (0.02 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.01 sec)

mysql> exit
Bye

!!!平常输入密码的时候不要直接添加在-p选项后面了，会被看到的，一定要注意安全!!!

第一次登陆时，会提示需要重置密码：

ALTER USER 'root'@'localhost' IDENTIFIED BY 'pass123456';

7.停止服务

$ support-files/mysql.server stop
Shutting down MySQL
.. SUCCESS! 

EORROR

The server quit without updating PID file

在未初始化，就启动时出现了：

$ sudo ./support-files/mysql.server start
Password:
Starting MySQL
. ERROR! The server quit without updating PID file (/usr/local/mysql/data/ephemerid.local.pid).

解决

初始化一下，即上文提到的mysqld --initialize

MY-011011

在初始化时，没有找到有效的mysql目录以及mysql data目录。

$ sudo ./bin/mysqld --initaialize --user=ephemerid
2019-01-20T05:13:45.476844Z 0 [System] [MY-010116] [Server] /Workspaces/programfiles/mysql-8.0.13-macos10.14-x86