Its easy to setup DHCP server in Linux with full control over the IP's and what IP's are assigned to client hosts. We would be using DHCP package via YUM for this setup. DHCP is used for dynamic assinging of IP addresses for the clients...
Linux
Setup and Configure DNS Server in Linux
This guide will help you in setting up a DNS server for resolving IP address to domain names and vice-versa. We will be using "named (bind)" as its the DNS version for Linux. First we need to install named Packages. # yum -y install...
Install Postfix (email server) in Linux
This article shows you how to install and configure a simple mail server called Postfix. It can be used to send emails or act as a email relay server for internal network wherein only one Server is allowed access to Internet and then all...
Secure /etc/fstab in Linux
Its best to secure /etc/fstab as it contains all the mount locations and can lead to boot issues if any novice person tinkers/plays around with it. The secure mode can only be enabled /disabled by root user only and completely secure....
Add and Mount LVM Volume in Linux
Its possible add a LVM volume on the fly. The steps would involve formatting the newly added disk with LVM and creating a mount point and adding the new volume to it. The whole process would involve creating Physical Volume followed by...
Get rid of SSH error message “WARNING REMOTE HOST IDENTIFICATION HAS CHANGED”
In Linux when you try to SSH it may at times give you this warning that REMOTE HOST IDENTIFICATION HAS CHANGED. It usually happens when the hostname or IP has changed of a host or the host was rebooted and generated a new fingerprint Key...
Setup Nagios Core on CentOS/Red Hat
Setup and Configuration guide for Nagios Core on any Fedora/Linux based OS (incl. CentOS & Red Hat). This guide would allow you to setup Nagios Monitoring Server up and running in roughly 15 mins. The process would involve installing...