Step by Step Installation of LAMP on CentOS 5.6

1. Minimum Hardware Requirements.
OS:- CentOS 5.6
Memory:- 1 GB
Harddisk:- 15 GB

First change the hostname as server.domain.com

vi /etc/sysconfig/network

NETWORKING=yes

NETWORKING_IPV6=no

HOSTNAME=server.domain.com

Change IP as

[root@client ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

BOOTPROTO=static

HWADDR=08:00:27:E2:E4:CB

ONBOOT=yes

IPADDR=192.168.1.13

NETMASK=255.255.255.0

GATEWAY=192.168.1.1

DNS1=192.168.1.1

NM_CONTROLLED=yes

2.Installing MySQL 5.0

yum install mysql mysql-server mysql-devel

 MySQL starts automatically whenever the system boots

chkconfig --levels 235 mysqld on
/etc/init.d/mysqld start

Set passwords for the MySQL root account:

mysql_secure_installation

[root@server ~]# mysql_secure_installation

First time password (leave blank)

Set root password? [Y/n] y

New password: <-- yourrootsqlpassword
Re-enter new password: <-- yourrootsqlpassword

Remove anonymous users? [Y/n] <-- ENTER
 ... Success!

Disallow root login remotely? [Y/n] <-- ENTER
 ... Success!

Remove test database and access to it? [Y/n] ßENTER

 - Dropping test database...

 ... Success!

 - Removing privileges on test database...

 ... Success!

Reload privilege tables now? [Y/n] <-- ENTER
 ... Success!

3 Installing Apache2                                            

yum install httpd

chkconfig --levels 235 httpd on

/etc/init.d/httpd start

 browser  http://192.168.0.100, and we should see the Apache2 placeholder page:

Apache's default document root is /var/www/html

 configuration file is /etc/httpd/conf/httpd.conf.

Additional configurations are stored in the /etc/httpd/conf.d/ directory.

4.Installing PHP5

yum install php

etc/init.d/httpd restart

To confirm/testing PHP5

Document root of the default web site is /var/www/html.

We will now create a small PHP file (info.php) in that directory

[root@server ~]# vi /var/www/html/info.php

<?php

phpinfo();

?>

 we will call that file in a browser (e.g. http://192.168.1.13/info.php):

5Getting MySQL Support In PHP5

yum install php-mysql php-gd php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc

 http://192.168.0.100/info.php in your browser and scroll down to the modules section again. You should now find lots of new modules there, including the MySQL module:

6 phpMyAdmin

wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el5.rf.i386.rpm
rpm -Uhv rpmforge-release-0.5.2-2.el5.rf.i386.rpm

yum install phpMyadmin

We change the Apache configuration so that phpMyAdmin allows connections not just from localhost (by commenting out the<Directory "/usr/share/phpmyadmin"> 

vi /etc/httpd/conf.d/phpmyadmin.conf

#

#  Web application to manage MySQL

#

#<Directory "/usr/share/phpmyadmin">

#  Order Deny,Allow

#  Deny from all

#  Allow from 127.0.0.1

#</Directory>

Alias /phpmyadmin /usr/share/phpmyadmin

Alias /phpMyAdmin /usr/share/phpmyadmin

Alias /mysqladmin /usr/share/phpmyadmin

We will  change the authentication in phpMyAdmin from cookie to http:

vi /usr/share/phpmyadmin/config.inc.php

[...]

/* Authentication type */

$cfg['Servers'][$i]['auth_type'] = 'http';

[...]

/etc/init.d/httpd restart---àTo restart apache

In the browser: http://192.168.1.13/phpmyadmin/:

Ref: http://www.howtoforge.com/installing-apache2-with-php5-and-mysql-support-on-centos-5.6-lamp