Frequently Asked Questions

How to Configure PPPOE in Centos 7/RHEL 7

The Point-to-Point Protocol over Ethernet (pppoe or PPPOE) is a network protocol for encapsulating PPP frames inside Ethernet frames. It appeared shortly after the...

Setup MariaDB Master-Slave Replication In CentOS 7

Why MariaDB Replication? As you may know, MariaDB is a drop in replacement for MySQL. It is a robust, scalable and reliable SQL server that...

Install Oracle VirtualBox And Manage It Using phpVirtualBox On CentOS 7...

We, all, knew how to install Oracle VirtualBox on CentOS 6.x and CentOS 7.x GUI based systems. But, what about on CentOS minimal server...

Install Graphite In CentOS 7

Graphite is a highly scalable real-time graphing system. As a user, you write an application that collects numeric time-series data that you are interested...

How to configure DRBD On CentOS 6.5

Introduction The Distributed Replicated Block Device (DRBD) is a distributed replicated storage system for the Linux platform. It is implemented as several userspace management applications...

configure BIND Server with Ubuntu 16.04

Introduction All of  Linux users are already families with BIND service, already a lots of articles has been published with recent Ubuntu Linux versions ,...

How To Install Subversion On CentOS 7

From Wikipedia: Apache Subversion (often abbreviated SVN, after the command name svn) is a software versioning and revision control system distributed as free software under...

Setup PXE Boot Environment Using Cobbler On CentOS 6.5

In our previous tutorials, we had showed you how to setup PXE environment on Ubuntu 14.04, and CentOS 6.5. Install And Configure PXE Server On...

How to disable server signature using .htaccess or by editing Apache?

Question : How to disable server signature using .htaccess or by editing apache config file? Answer: Attackers can use server signature to their advantage when performing...

How to Configure apt-get behind proxy server for Ubuntu 14/15/16

After Installing Ubuntu 16.04 to make some monitoring tests, I was not able to get or update behind the http/https/ftp  proxy  . Here how...

Install Oracle Client On CentOS

This installation is same for all rpm based systems like (Centos/Fedora/RHEL/SLES/Opensuse/Mandriva..) This tutorial is about 11.2 version client, but should work even for 12.1 version. Packages...

How To Install Mate Desktop In FreeBSD 10.1

Install Mate desktop in FreeBSD 10.1 FreeBSD is fully text mode system, however some times new users might want to use GUI desktop environment. This...

How To Fix “Building the OpenGL support module [FAILED]” Error In...

When I was trying to install Virtualbox guest additions for my Centos 6.5  64bit VM, i can't complete the installation due to the following...

Install GFS2 In CentOS 6.5

In computing, the Global File System 2 or GFS2 is a shared disk file system for Linux computer clusters. GFS2 differs from distributed file...

How To Setup Zentyal Server 4.1

Zentyal server is a an alternative for Microsoft Server, it is Ubuntu based Small and Medium Enterprise Server. The latest stable version of Zentyal...

Install Puppet Server On CentOS 7

Puppet is a tool designed to manage the configuration of Unix-like and Microsoft Windows systems declaratively. The user describes system resources and their state,...

How to check ssh logs

Question : How  to Check  ssh  logs? Answer: For example if your  box is hacked and you want to know  who has did that ...

Install LibreNMS New Fork From Observium

LibreNMS is an autodiscovering PHP/MySQL/SNMP based network monitoring tool which includes support for a wide range of network hardware and operating systems including Cisco,...