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DevOps, Cloud Infrastructure, Kubernetes, and the engineering behind scalable systems — written from real-world experience, not tutorials.
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Updated Aug 13, 2026
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Demystifying IP Addresses and Netmasks: The Complete Overview
In this blog, we will learn about IP addresses and netmasks. IP The Internet Protocol (IP) is a unique identifier for your device, similar to how a mobile number uniquely identifies your phone. IP addresses are typically represented as four Octets for IPv4, with each octet being One byte/Octets in size, and eight octets for IPv6, with each octet being two bytes/Octets in size. Examples: * IPv4: 192.168.43.64 * IPv6: 2001:db8:3333:4444:5555:6666:7777:8888 For the pu
Jallipatti Karadu : A Bio-Diversity Walk
This blog is about my experience of the Bio-diversity walk at Jallipatti which is located south of Udumalpet with a distance of 12km. Table of contents * Bio-diversity walk introduction * Antlion * Social Spider * Cochineal * Sunai * Conclusion Let's understand the Bio-diversity walk. Bio-diversity walk in which we observe the surroundings that not only consist of human beings but also plants, water resources, animals, birds, and micro-organisms which also have an equ
Setting up a network that can ping google but not able to ping Facebook in the same system without…
The first question that arise on your mind after seeing this title is “Why I want to block Facebook? What is the need for this?”. The answer for your question is may be you have kids in your home or they may be lying you by saying they are attending online class but actually they are wasting their precious time in Social Networks. It is more common nowadays since this Pandemic happened. Ok. Lets come to the point. Here we are going to see how to block Facebook but ensure the access to Goog
Create a Network Topology Setup in such a way so that System A can ping to two Systems System B…
Concepts used: Routing tables and Netmask In this practical, we are going to use three Redhat Enterprise Linux Virtual Machines which are hosted by Oracle VirtualBox. I already explained these concepts in my previous blog, if you want to know these basic concepts then please refer this Note: Before starting these VMs, make sure it is connected in Host-only adapter mode and the adapter name should be the same in all three VMs. Environment Setup System A First step is to change the IP a
Setting up your own High Availability managed WordPress hosting using Amazon RDS
Hosting your own WordPress website is interesting right!! Ok, come on let's do it!! We are going to do this practical from Scratch. From the Creation of our Own VPC, Subnets, Internet Gateway, Route tables to Deployment of WordPress. Here, we are going to use Amazon Web Service’s RDS service for hosting our own WordPress site. Before that, let's take a look at a basic introduction to RDS service. Amazon Relational Database Service is a distributed relational database service by Amazon Web
Linux Partition: Static Partition Scaling without any data loss
In this blog, we are going to see how to increase or decrease the size of the static partition in Linux without compromising any data loss and how to do that in Online mode without unmounting. I already explained the basic concepts of partition in very detail in my previous blog. You can refer to that blog by clicking here. In this practical, the Oracle VirtualBox is used for hosting the Redhat Enterprise Linux (RHEL8) Virtual Machine (VM). The first step is to attach one hard disk. So, I
Creating a Webapp Environment in Docker Container by Setting up an HTTP Web server and Python…
A web application is application software that runs on a web server, unlike computer-based software programs that are run locally on the operating system of the device. For the Web app, it needs an environment that cannot be compromised. In this article, we are going to see how to create an environment for running a Webapp in Container with Virtual Machine as a host. Here we used Oracle VirtualBox’s RHEL8 Virtual Machine is acting as a host. Contents: * Docker Installation * Configurati
Setting up a Dynamic Storage unit to the Data node in HDFS Cluster
Hadoop and LVM Nowadays, data are generated and updated per second. In this Big data world, Some times We can’t even predict how much data we will get in the future. For storing these massive amounts of data, typically we are using Clustering technologies, so such technique is Hadoop Distributed File System (HDFS). Hadoop is an open-source Java-based framework used for storing data and running applications on clusters of commodity hardware. Since the size of data is exponentially growing,
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