Implement mysql remote login under centos

There are two main steps to implement remote login:

(1) Grant remote login permission to the mysql user (table modification method or authorization method);

(2) The firewall opens port 3306.

(1) Grant login permission

mysql -u root -p 输入密码进入到mysql中。

Authorization method

Create account test and authorize it, the password is password:

grant all on *.* to test@'127.0.0.1' identified by "password";

Free learning video tutorial sharing: mysql video tutorial

Change table method

1. Switch to mysql database:

USE mysql;

2. Modify test permissions:

UPDATE user SET host = '%' WHERE user = 'test';

%: Any IP can access

3. Check whether the user table has been modified successfully:

SELECT user,host FROM user;

4. Update the database:

flush privileges;

(2) Open port 3306

1. Check the firewall status:

[root@study ~]# firewall-cmd –state       ## 结果显示为running或not running

2. Open the port:

## zone -- 作用域
## add-port=80/tcp -- 添加端口，格式为：端口/通讯协议
## permanent -- 永久生效，没有此参数重启后失效
firewall-cmd --zone=public --add-port=3306/tcp –-permanent

3. Restart the firewall

firewall-cmd --reload

Use firewall-cmd --help to view the help file See more commands.

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