Highly Available Linux Cluster for (LAMP) Apache, MySQL, PHP using DRBD and HeartBeat on CentOS / RedHat / Fedora

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Disclaimer:
The following steps are performed on Virtual machines and tested successfully.
It is advised to test first on raw / virtual machines and then in production environment.

We will setup for Apache Webserver and MySQL on High Availability Cluster (2 Nodes).

Test Scenario: Continue reading “Highly Available Linux Cluster for (LAMP) Apache, MySQL, PHP using DRBD and HeartBeat on CentOS / RedHat / Fedora”

Urdu CBT Linux System Administration-003-Apache Web Server-5/5

This CBT shows how to configure Apache Web Server on CENTOS through CLI. Valid for Fedora, RHEL, CENTOS, and any other distribution derived from these.
Author: Muhammad Kamran Azeem
Courtesy: http://wbitt.com

Urdu CBT Linux System Administration-003-Apache Web Server-4/5

This CBT shows how to configure Apache Web Server on CENTOS through CLI. Valid for Fedora, RHEL, CENTOS, and any other distribution derived from these.
Author: Muhammad Kamran Azeem
Courtesy: http://wbitt.com

Urdu CBT Linux System Administration-003-Apache Web Server-3/5

This CBT shows how to configure Apache Web Server on CENTOS through CLI. Valid for Fedora, RHEL, CENTOS, and any other distribution derived from these.
Author: Muhammad Kamran Azeem
Site: http://wbitt.com

Urdu CBT Linux System Administration-003-Apache Web Server – 2/5

This CBT shows how to configure Apache Web Server on CENTOS through CLI. Valid for Fedora, RHEL, CENTOS, and any other distribution derived from these.
Author: Muhammad Kamran Azeem
Courtesy: http://wbitt.com

Urdu CBT Linux System Administration-003-Apache Web Server – 1/5

This CBT shows how to configure Apache Web Server on CENTOS through CLI. Valid for Fedora, RHEL, CENTOS, and any other distribution derived from these.

Author: Muhammad Kamran Azeem
Courtesy: http://wbitt.com

Installing Nagios core on RHEL / CENTOS 5.x – RHEL / CentOS 6.x Fedora 15/16/17/18/19/20

What is Nagios

An enterprise-class monitoring and alerting solution that provides organizations with extended insight of their IT infrastructure before problems affect critical business processes.

Requirements

We require following things for Installing Nagios:
These are Just Pre-requisites. We need them to other things work …

1. Apache and PhP (php is optional)
2. gcc, glib, glibc-common, gd and gd-devel

Continue reading “Installing Nagios core on RHEL / CENTOS 5.x – RHEL / CentOS 6.x Fedora 15/16/17/18/19/20”

Highly Available WEB Servers Cluster Configuration by using rsync and heartbeat Linux based Utilities

Highly Available  WEB Servers Cluster Configuration  by using rsync and  heartbeat Linux based Utilities

Written by: Muhammad Farrukh Siddique (LPIC)

Operating System on both machines: CentOS-5.3 Final  Required RPMs: Heartbeat,rsync,httpd
Service to be mirrored: web service (httpd)
First Machine name (fqdn): node1.ha.int 
Second Machine name (fqdn): node2.ha.int
IP Address of node1: 192.168.3.224
IP Address of node2: 192.168.3.225
Default Gateway of both machines: 192.168.3.1
DNS Server: 192.168.2.11

Continue reading “Highly Available WEB Servers Cluster Configuration by using rsync and heartbeat Linux based Utilities”