11/05/2011

MySQL Tidbits

After installing mysql-server on Fedora 15:

# chkconfig mysqld on
# service mysqld start
# mysql_secure_installation

For the firewall, secure port 3306.

After starting the database server mysqld, it's now time to create a database, table, add data, and a user with full permissions using the client, mysql:
# mysql -u root -p
********
mysql> CREATE DATABASE mydb;
mysql> USE mydb;
mysql> CREATE TABLE questions (
> qid INT NOT NULL AUTO_INCREMENT,
> PRIMARY KEY(qid),
> question TEXT);
mysql> INSERT INTO questions VALUES (0,"Who created Linux?");
mysql> GRANT ALL ON mydb.* TO 'dbuser'@'localhost' IDENTIFIED BY 'password';

To backup a MySQL database, use the mysqldump command:

mysqldump -u root -p mydb > mydb.db

To restore a MySQL database, first drop the database, then create the database and use mysql to restore it:

mysql -u root -p

mysql> drop database mydb;
Query OK, 15 rows affected (1.85 sec)

mysql> create database mydb;
Query OK, 1 row affected (0.00 sec)

mysql> quit

mysql -u root -p mydb < mydb.db


https://www.howtoforge.com/setting-changing-resetting-mysql-root-passwords


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I've worked with computers for over 30 years, programming, administering, using and building them from scratch.

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