Category: DevOps

creating vagrant boxex

Complete guide for creating Vagrant boxes with VirtualBox

Vagrant is tool for building & managing virtual machines environment, especially development environments. It provides easy to use & easy to replicate/reproducible environment built on top of technologies like Docker, VirtualBox, Hyper-V, Vmware ,...

install clamav

How to install ClamAV (Antivirus) & ClamTK on Linux

Linux is known for its high standards of security & there are very low amount of viruses that has been known to infect a Linux system. But in the recent times as technology is...

Easy way to install PostgreSQL on CentOS

PostgreSQL or Postgres, is a very powerful, highly scalable relational database system, that peovided implementation of SQL query language. It is open source & can be installed on Unix/Linux system as well as on...

Redis CLI Commands

SysAdmin’s guide to REDIS CLI Commands

Redis is an open source in-memory data structure store that is mainly used as a caching server but can also be used as a database or as a message broker. We have already discussed...

Apache with modsecurity

Easy way to integrate Apache with modsecurity on Ubuntu

ModSecurity WAF (Web Application Firewall ) is an open source software firewall that is used to safeguard applications from attacks & unauthorised access. ModSecurity WAF can be used as a module with already installed...

installing mod_pagespeed

Installing mod_pagespeed for Apache webserver

Pagespeed or mod_pagespeed is an open source module used in apache & is used to speed up the websites. It applies various layers of filters to all the associated assets like pages, style-sheets, images...

install Docker compose

Lazy SysAdmin’s guide to install Docker Compose

In this tutorial, we are going to learn about Docker Compose & process to install Docker compose on your Linux machines. With the help of docker compose, we can create & run multi-container Docker...

install Docker on Ubuntu

Learn Docker : Easy way to install Docker on Ubuntu

A Docker container provides a way to run multiple isolated systems on a single server or host. Each container shares kernel (& libraries also) of the host’s operating system. And since each container that...

create docker container

Create your first Docker container : A Beginner’s guide

Docker containers are making news for some time now & there popularity has been growing day by day. They are now being adopted at a fast pace & are replacing Virtual machines especially when...

Gitlab tutorial for Beginners

Informative guide to Gitlab tutorial for Beginners

This gitlab tutorial for beginners is actually a collection of various tutorials that we have already published & purpose of writing this tutorial is actually to make it easy for readers to get all...

Gitlab tutorial

A Gitlab tutorial — Things to do after installation

Earlier we have discussed detailed installation of Gitlab server on CentOS & Ubuntu systems. Once we have our Gitlab server ready, we must be able to perform common operations like the ones mentioned below,...

wildfly cluster

Creating a Wildfly cluster for load-balancing in Linux

In our earlier tutorial, we have learned to install wildfly 10.1.0. in this tutorial, we will learn to create a load-balancing wildfly cluster. We will be using wildfly verison 10.1.0, which is the latest...

let's encrypt on centos

Create a free Apache SSL certificate with Let’s Encrypt on CentOS & RHEL

Let’s Encrypt is a free, automated & open certificate authority that is supported by ISRG, Internet Security Research Group. Let’s encrypt provides X.509 certificates for TLS (Transport Layer Security) encryption via automated process which...

compare files in Linux

Simple way to compare files in Linux for differences

There are many GUI tools available to compare files & folders to check for any changes or dissimilarities, but it does not mean that one can’t perform comparison or diff using CLI on a...

Backup & Restore GITLAB

Easy & simple guide to Backup & Restore GITLAB

Gitlab is a web GUI for git repositories with support for CI/CD, issue tracking & wiki. We have already discussed in detail, how we can install GITLAB on CentOS & Ubuntu systems. In this...

Simple Ansible commands

Ansible Tutorial: Introduction to simple Ansible commands

In our earlier Ansible tutorial, we discussed the installation & configuration of Ansible. Now in this ansible tutorial, we will learn some simple ansible commands that we will use to manage our infrastructure. So...