Installing Mysql on Centos

First we need to check mysql installed or not

          [root@sysadmin ~]#  rpm   -qa   mysql

Then not installed run this command

         [root@sysadmin ~]#  yum   install   mysql   mysql-server  -y

After installing the mysql and start the mysql daemon service

          [root@sysadmin ~]#   /etc/init.d/mysqld   restart

Output could like this

           Stopping mysqld: [ OK ]

Initializing MySQL database: Installing MySQL system tables...

OK

Filling help tables...

OK

To start mysqld at boot time you have to copy

support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !

To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'

/usr/bin/mysqladmin -u root -h linux password 'new-password'

Alternatively you can run:

/usr/bin/mysql_secure_installation

which will also give you the option of removing the test

databases and anonymous user created by default. This is

strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:

cd /usr ; /usr/bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl

cd /usr/mysql-test ; perl mysql-test-run.pl

Please report any problems with the /usr/bin/mysqlbug script!

[ OK ]

Starting mysqld: [ OK ]  

Set a password for root user at first time

           [root@sysadmin ~]#  mysqladmin   -u   root   password   'new-password'

Now installed the mysql.

Mysql starts automatically whenever the system boot so we will run this command

          [root@sysadmin ~]#   chkconfig   mysqld   on