Linux 中 MySQL 操作

Linux 查找 MySQL 配置文件

1.找到 MySQL 的位置
which mysql    # /usr/bin/mysql

2.执行查找命令
/usr/bin/mysql --verbose --help|grep -A 1 'Default options'
# /etc/my.cnf /etc/mysql/my.cnf /usr/etc/my.cnf ~/.my.cnf 为MySQL执行配置文件的先后顺序

Linux 设置 MySQL 允许外网访问

1.在 /etc/my.cnf 配置文件 [mysqld] 中增加 port=3306 bind-adress=0.0.0.0
vim /etc/my.cnf
port=3306  
bind-address=0.0.0.0

2.登录，设置
>>> mysql -u root -p 123456
>>> use mysql
>>> select user, host from user;
>>> update user set host='%' where user = 'root';

3.授权用户具体权限
授权任意主机（@'%'）通过root用户（'root'@）用123456密码（identified by '123456'）连接到mysql服务器
>>> grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;
>>> flush privileges;

4.重启 MySQL 生效
>>> systemctl restart mysqld