Category: How To’s

Learn | Teach Open Source Technologies

How to install & configure GITLAB CI/CD on your own Server — Ubuntu 16.04

GitLab is an online Git repository manager with a wiki, issue tracking, CI and CD. It is a great way to manage git repositories on a centralized server. GitLab gives you complete control over your repositories or projects and allows you to decide whether they are public or private for free.

What is GRSecurity

Grsecurity® is an extensive security enhancement to the Linux kernel that defends against a wide range of security threats through intelligent access control, memory corruption-based exploit prevention, and a host of other system hardening that generally require no configuration. It has been actively developed and maintained for the past 15 years. Commercial support for grsecurity…
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Linux Family reached 99.4 % as Super Computer Operating System —

According to  in June 2016 Linux family has gained the usage up to 99.4 % as Operating System for Super Computing platform or HPCC.

How to configure ICINGA2 Monitoring server on CentOS / RHEL 7

Before we start to configure ICINGA2 we need to ensure that LAMP is installed on our machine. SELINUX Setup view /etc/selinux/config sed -i ‘s/SELINUX=enforcing/SELINUX=permissive/g’ /etc/selinux/config reboot

How to enable and use EPEL Repo in RedHat / CentOS Linux

Red Hat Enterprise Linux 7 / CentOS 7 rpm -ivh yum update

Setting up custom domain in OSClass

Please go to your server root and open config.php to setup custom domain cd /var/www/html/

How to install FFmpeg, FLVTool2 and MP4Box on Ubuntu 14.04

  root@www:~# sudo add-apt-repository ppa:mc3man/trusty-media root@www:~# sudo apt-get update root@www:~# sudo apt-get install ffmpeg gstreamer0.10-ffmpeg root@www:~# which ffmpeg /usr/bin/ffmpeg root@www:~#

Clip Bucket 2.8 on Ubuntu 14.04 with NGINX & PHP5-FPM on DigitalOcean VPS

Setup your own Video sharing website like, , or using Clip Bucket video hosting / sharing code in 30 minutes. First of all we need to update our Ubuntu 14.04 with latest updates apt-get update apt-get upgrade

How to Test-Drive OpenStack

 Here’s a scenario. You’ve been hearing much about OpenStack and you’re interested in putting it through a test drive so you can start learning it

Preparing a Test Environment Using OpenStack

Please download complete Installation Guide from the following link. Download link