mac下brew安装mysql

brew info mysql     

mysql: stable 8.0.23 (bottled)
Open source relational database management system
https://dev.mysql.com/doc/refman/8.0/en/
Conflicts with:
  mariadb (because mysql, mariadb, and percona install the same binaries)
  percona-server (because mysql, mariadb, and percona install the same binaries)
Not installed
From: https://mirrors.ustc.edu.cn/homebrew-core.git/Formula/mysql.rb
License: GPL-2.0-only
==> Dependencies
Build: cmake ✘
Required: openssl@1.1 ✔, protobuf ✘
==> Caveats
We've installed your MySQL database without a root password. To secure it run:
    mysql_secure_installation
MySQL is configured to only allow connections from localhost by default

To connect run:
    mysql -uroot

To have launchd start mysql now and restart at login:
  brew services start mysql
Or, if you don't want/need a background service you can just run:
  mysql.server start    

安装过程

brew install mysql

==> Installing mysql
==> Pouring mysql-8.0.25_1.big_sur.bottle.tar.gz
==> /usr/local/Cellar/mysql/8.0.25_1/bin/mysqld --initialize-insecure --user=jiangbin --basedir=/usr/local/Cellar/mysql/8.0.25_1 --datadir=/usr/local/var/mysql --tmpdir=/tmp
==> Caveats
We've installed your MySQL database without a root password. To secure it run:
    mysql_secure_installation

MySQL is configured to only allow connections from localhost by default

To connect run:
    mysql -uroot

To have launchd start mysql now and restart at login:
  brew services start mysql
Or, if you don't want/need a background service you can just run:
  mysql.server start
==> Summary
?  /usr/local/Cellar/mysql/8.0.25_1: 300 files, 293.6MB

安装成功后启动mysql服务

mysql.server start

Starting MySQL
. SUCCESS!

mysql.server stop
mysql.server start
mysql.server restart

修改mysql配置

mysql_secure_installation

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

VALIDATE PASSWORD COMPONENT can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD component?
// 提示是否设置密码
Press y|Y for Yes, any other key for No: y
// 提示选择密码强度等级
There are three levels of password validation policy:

LOW    Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary                  file

Please enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 0
Please set the password for root here.
// 按照所选的密码强度要求设定密码
New password:

Re-enter new password:
// 提示密码强度50,不符合要求重新设置密码
Estimated strength of the password: 50
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
// 提示删除默认无密码用户
Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Success.


Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
// 提示禁止远程root登录
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
Success.

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.

// 提示删除默认自带的test数据库
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
 - Dropping test database...
Success.

 - Removing privileges on test database...
Success.

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
// 提示是否重新加载privilege tables
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
Success.

All done!

登录mysql

mysql -u root -p

Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.25 Homebrew

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>

配置Mysql远程连接

一.赋予某个用户权限

1.赋予权限格式：grant 权限 on 数据库对象 to 用户@IP(或者相应正则)

注：可以赋予select,delete,update,insert,index等权限精确到某一个数据库某一个表。

GRANT ALL PRIVILEGES ON *.* TO '用户名'@'%' IDENTIFIED BY '密码' WITH GRANT OPTION;

这里表示赋予该用户所有数据库所有表（*.*表示所有表），%表示所有IP地址。

2.刷新权限：FLUSH PRIVILEGES;

FLUSH PRIVILEGES;

3.查看权限：*

select user,host from mysql.user;

$ /usr/local/mysql/bin/mysql -u root -p
--输入密码
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| seckill            |
| sys                |
| test               |
+--------------------+
6 rows in set (0.00 sec)
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
--查询当前数据库相关信息
mysql> select host,user,authentication_string,plugin from user;
+-----------+------------------+------------------------------------------------------------------------+-----------------------+
| host      | user             | authentication_string                                                  | plugin                |
+-----------+------------------+------------------------------------------------------------------------+-----------------------+
| localhost | mysql.infoschema | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | caching_sha2_password |
| localhost | mysql.session    | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | caching_sha2_password |
| localhost | mysql.sys        | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED | caching_sha2_password |
| localhost | root             | *84AAC12F54AB666ECFC2A83C676908C8BBC381B1                              | mysql_native_password |
+-----------+------------------+------------------------------------------------------------------------+-----------------------+
4 rows in set (0.00 sec)

--将root用户设置为所有地址可登录，原来是localhost表示只用本机可登录
mysql> update user set host='%' where user='root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

--刷新权限
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

--将用户root密码设置为永不过期
mysql> alter user 'root'@'%' identified by '12345678' password expire never;
Query OK, 0 rows affected (0.01 sec)

--将root用户密码加密方式改为mysql_native_password ，上面查到root用户密码的加密方式为caching_sha2_password 
mysql> alter user 'root'@'%' identified with mysql_native_password by '12345678';
Query OK, 0 rows affected (0.00 sec)

--刷新权限，在别的机器上即可登录
mysql> flush privileges;

MAC 通过 brew 安装Mysql 无法使用外网访问

1. 打开/usr/local/etc/my.cnf文件
2. 将bind-address = 127.0.0.1修改为# bind-address = 127.0.0.1
3. 保存并重启mysql