• Arun Kumar

MySQL Installation on Linux

This article demonstrates MySQL installation on Oracle Enterprise Linux 6.5 version.


Installation of MySQL


Make sure you are able to connect internet via virtual machine. Try to ping google.com and proceed with installation of MySQL 5.6

# yum install mysql mysql-server -y

Start mysql service and enable it to auto-start on reboot


# chkconfig mysqld on
# service mysqld start

Initiate mysql secure installation to remove test databases and anonymous users created by default. Just hit enter when prompted for root password and then change it

mysql_secure_installation
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL

SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!
In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none): 
OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.
Set root password? [Y/n] Y
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!
By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them.  This is intended only for testing, and to make the installation
go a bit smoother.  You should remove them before moving into a
production environment.
Remove anonymous users? [Y/n] Y
 ... Success!
Normally, root should only be allowed to connect from 'localhost'.  This
ensures that someone cannot guess at the root password from the network.
Disallow root login remotely? [Y/n] Y
 ... Success!
By default, MySQL comes with a database named 'test' that anyone can
access.  This is also intended only for testing, and should be removed
before moving into a production environment.
Remove test database and access to it? [Y/n] Y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
Reload privilege tables now? [Y/n] Y
 ... Success!
Cleaning up...
All done!  If you've completed all of the above steps, your MySQL
installation should now be secure.
Thanks for using MySQL!


Create MySQL Database


Once MySQL installation is done, let us connect to the database

$ mysql --user=root --password
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 23
Server version: 5.1.67 Source distribution
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>

Use below command to create new database

mysql> create database mydb;
Query OK, 1 row affected (0.01 sec)
mysql>

List all the databases

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mydb               |
| mysql              |
+--------------------+
3 rows in set (0.00 sec)
mysql>

To switch between databases use below command

mysql> use mydb;
Database changed
mysql>

You can make new connections directly to the database as follows.

$ mysql --user=root --database=mydb --password
Enter password:

Installation Done!


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