Blog Archives

AWS Inter-Region VPC Peering for RDS Replica Access

Create an RDS Read Replica in Another Region Create Inter-Region VPC Peering Connection Go to VPC Dashboard in the source region (us-east-1): Accept the peering request in the target region’s VPC dashboard (us-west-2). Update Route Tables Each VPC must be aware of how to route traffic to the other: In us-east-1: Destination: 10.1.0.0/16 (CIDR of target VPC) Target: Peering Connection ID In us-west-2: Do the same, but route to 10.0.0.0/16. Modify Security Groups Adjust security

Sajna VM September 15, 2025

How to Migrate Route 53 Domains Between AWS Accounts

When moving infrastructure between AWS accounts, one common task is migrating DNS records in Amazon Route 53. Instead of manually copying records, we can export them from the source account and import them into the destination account. This ensures consistency and reduces the chance of misconfiguration. In this guide, we’ll walk through How to migrate a Route 53 domains and its records from one AWS account to another. Prerequisites Step 1: Create a New Hosted

Sourav AJ September 13, 2025

How to Migrate Amazon S3 Data Across Accounts and Regions Using the AWS CLI

Migrating data between Amazon S3 buckets across AWS accounts and Regions can be a common requirement during cloud restructuring, account isolation, or data archiving strategies. We’ll copy data from a source bucket in one AWS account to a destination bucket in another account, potentially in a different Region. This process ensures that the destination account becomes the new owner of the objects, and we’ll achieve this through AWS S3 data transfer using AWS CLI. Tools

Jishnu V September 12, 2025

How do I assume an IAM role using the AWS CLI

Introduction Cross-account access is a common need in AWS environments—especially when managing resources across multiple accounts. This guide walks you through securely assuming an IAM role in a destination AWS account using the IAM AWS CLI from a source account via temporary credentials. Prerequisites Step 1: Install the AWS CLI If you haven’t already, install the AWS CLI Verify installation: Step 2: Configure the AWS CLI with IAM User Credentials Use the IAM user credentials

Jishnu V September 12, 2025

How to Install Jitsi Meet on Ubuntu

Prerequisites Download the Jitsi GPG Key First, download the Jitsi GPG key with the curl downloading utility: In this command, -o specifies the name of the file where the downloaded key data will be saved. The apt package manager will use this GPG key to validate the packages you will download from the Jitsi repository. Add the Jitsi GPG Key to Your System Keyring Next, add the GPG key to your system’s keyring with the

Sajna VM September 8, 2025

How to Enable Kernel Crash Dump (kdump) on Debian Linux

When a Linux system crashes, the most valuable tool for troubleshooting is a kernel crash dump. A crash dump captures the contents of the system’s memory at the moment of failure, allowing administrators and developers to analyze the root cause using tools like crash or gdb. On Debian Linux, the kdump service provides this functionality by reserving memory for a secondary kernel (called the dump-capture kernel) that boots when the primary kernel fails. In this

Sourav AJ August 31, 2025

How to Install OpenLiteSpeed on AlmaLinux 9

OpenLiteSpeed is a high-performance, open-source web server software designed to efficiently serve web content. It is the open-source version of LiteSpeed web server, which is known for its high speed and performance. Many web developers and system admins choose OpenLiteSpeed because it’s reliable, easy to use, and great for running websites or apps that need to load quickly. Setting up OpenLiteSpeed on AlmaLinux 9 ensures a secure and optimized environment for modern applications. Follow the

Merin John August 31, 2025

How to Install CodeIgniter on Ubuntu 24.04

CodeIgniter is a lightweight, fast, flexible, and secure full-stack PHP web framework. It’s a toolkit designed to help people build websites with PHP more quickly. Instead of writing everything from scratch, CodeIgniter provides a collection of ready-to-use libraries for common tasks, along with a simple and organized way to access them, making Installing CodeIgniter on Ubuntu 24.04 a seamless process for developers. Why go with CodeIgniter? Prerequisites Step-by-Step Installation on Ubuntu 24.04 Step 1: Update

Merin John August 31, 2025

How to Deploy Ruby on Rails with Passenger on Ubuntu 24

Ruby on Rails is one of the most popular frameworks for building modern web applications. When paired with Passenger and Nginx, you get a production-ready deployment stack that is simple, secure, and high-performance. In this guide, we’ll walk through the process of setting up a fresh Ruby on Rails application to deploy Ruby on Rails and running it with Passenger on Ubuntu 24. Steps to Deploy Rails with Passenger 1. Update and Install Dependencies Make

Sourav AJ August 29, 2025

How to Install Mattermost on Ubuntu 24.04

Mattermost is an open-source, self-hosted collaboration platform designed for secure team communication. If you’re looking to set it up, you can follow this guide to install Mattermost on Ubuntu 24.04 for a seamless and secure deployment. Prerequisites Step 1: Update System Packages Step 2: Install and Configure PostgreSQL Install PostgreSQL and enable it to start on boot: Create Mattermost Database and User Switch to the PostgreSQL user: Create a new PostgreSQL user and database: Step

Jishnu V August 29, 2025