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

centos    mysql      images

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”

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”

How to Configure Network Time Protocol NTP Server in CentOS RHEL Fedora

We have two Linux Machines one machine is Server  and one machine is Client

Server Machine 192.168.1.50 baber

Cleint Machine  192.168.1.60 farrukh

Server side configuration on CentOS /RHEL /Fedora

root@localhost# vi /etc/ntp.conf Continue reading "How to Configure Network Time Protocol  NTP Server in CentOS RHEL Fedora"