mysql远程登录问题

[Q1] 解决mysql远程登录

一、确认服务器端口号开放
1、确认3306端口是否对外开放

ubuntu@ubuntu:~$ netstat -an | grep 3306
tcp0 0 127.0.0.1:3306  0.0.0.0:*   LISTEN

此处3306端口只监听本地的(127.0.0.1)连接，修改/etc/mysql/my.cnf中的bind-address，注释掉或者改成指定的IP
二、授权远程连接用户<br>
1、登录：

mysql -uroot -pxxxx

2、授权

grant all privilege on [database].[table] to [user]@[ip] identified by [password]
mysql>grant all on *.* to [email protected]‘%‘ identified by ‘user_password‘;

database：授权的数据库名，所有的数据库用匹配符`*`<br>
table:授权的表名，所有的表用匹配符`*`<br>
user:授权的用户名<br>
ip:授权的ip地址，例如 ‘xxx.xxx.xxx.xxx‘

password:授权用户名的密码，例如 ‘xxxxxx‘ 
3、刷新授权或者mysql重启

flush privilege
sudo /etc/init.d/mysql restart

---
[Q2]mysql 命令导入csv

select * from test_info
into outfile ‘/tmp/test.csv‘
fields terminated by ‘,‘ optionally enclosed by ‘"‘ escaped by ‘"‘
lines terminated by ‘\r\n‘;