Mysql initializes root password and allows remote access

The default root user of mysql has no password, enter mysql –u root to enter mysql

1. Initialize the root password

enter mysql database

MySQL 5.7.6 and latest:

mysql> update user set authentication_string=PASSWORD('newpass') where User='root';
//make changes take effect
mysql>FLUSH PRIVILEGES
//Exit MySQL server
mysql>EXIT

MySQL 5.7.5 or earlier:

 

mysql>update user set password=PASSWORD('newpass') where User='root';

You must reset your password using ALTER USER statement before executing this statement.

 

SET PASSWORD = PASSWORD('new password');

 

2. To allow mysql remote access, you can use the following three methods:

a. Change the table

 

mysql -u root –p
mysql>use mysql;
mysql>update user set host = '%' where user = 'root';
mysql>select host, user from user;

 b. Authorization.

 

For example, you want root to connect to mysql server from any host using 123456.

 

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

 If you want to allow user jack to connect to mysql server from host with ip 10.10.50.127 and use 654321 as password

mysql>GRANT ALL PRIVILEGES ON *.* TO 'jack'@’10.10.50.127’ IDENTIFIED BY '654321' WITH GRANT OPTION;
mysql>FLUSH RIVILEGES

 c: On the machine where mysql is installed run:

//Enter MySQL server
d:\mysql\bin\>mysql -h localhost -u root
//Give any host permission to access the data
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION
//make changes take effect
mysql>FLUSH PRIVILEGES
//Exit MySQL server
mysql>EXIT