Время создания: 13.07.2018 15:30
Текстовые метки: linux mysql user
Setting Up a MySQL User Account:
For adding a new user to MySQL, you just need to add a new entry to usertable in database mysql.
Below is an example of adding new user guest with SELECT, INSERT and UPDATE privileges with the password guest123; the SQL query is:
root@host# mysql -u root -p
mysql> use mysql;
mysql> INSERT INTO user
(host, user, password,
select_priv, insert_priv, update_priv)
VALUES ('localhost', 'guest',
PASSWORD('guest123'), 'Y', 'Y', 'Y');
Query OK, 1 row affected (0.20 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 1 row affected (0.01 sec)
mysql> SELECT host, user, password FROM user WHERE user = 'guest';
| host | user | password |
| localhost | guest | 6f8c114b58f2ce9e |
1 row in set (0.00 sec)
When adding a new user, remember to encrypt the new password using PASSWORD() function provided by MySQL. As you can see in the above example the password mypass is encrypted to 6f8c114b58f2ce9e.
Notice the FLUSH PRIVILEGES statement. This tells the server to reload the grant tables. If you don't use it, then you won't be able to connect to mysql using the new user account at least until the server is rebooted.
You can also specify other privileges to a new user by setting the values of following columns in user table to 'Y' when executing the INSERT query or you can update them later using UPDATE query.
Another way of adding user account is by using GRANT SQL command; following example will add user zara with password zara123 for a particular database called TUTORIALS.
root@host# mysql -u root -p password;
mysql> use mysql;
mysql> GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP
-> ON TUTORIALS.*
-> TO 'zara'@'localhost'
-> IDENTIFIED BY 'zara123';
This will also create an entry in mysql database table called user.
NOTE: MySQL does not terminate a command until you give a semi colon (;) at the end of SQL command.
The /etc/my.cnf File Configuration:
Most of the cases, you should not touch this file. By default, it will have the following entries:
Here, you can specify a different directory for error log, otherwise you should not change any entry in this table.
Administrative MySQL Command:
Here is the list of important MySQL commands, which you will use time to time to work with MySQL database: