Author: Rahul

In this guide, we’ll walk through the process of installing Python 3.12 on Amazon Linux 2 from source. Installing Python from source allows you to have the most control over the installation process and to customize Python to your needs. This guide is intended for users who require a specific Python version that is not available through the default repositories or who need to compile Python with specific options. Prerequisites Before beginning, ensure that you have access to a terminal on an Amazon Linux instance and that you have superuser privileges or can use the sudo command. Step 1: Update…

Linux, renowned for its robustness and flexibility, is a preferred choice for servers and desktops worldwide. Managing user accounts is a fundamental aspect of system administration, encompassing the creation, modification, and deletion of user accounts and their associated data. This guide provides a thorough overview of how to safely remove user accounts and their home directories in Linux, ensuring system security and integrity. Understanding User Accounts in Linux In Linux, user accounts are essential for accessing and interacting with the system. Each account is associated with a unique identifier (UID), a home directory, and possibly a shell. When a user…

Security-Enhanced Linux (SELinux) is an essential component for managing access control security policies in the Linux ecosystem. Designed to provide a robust layer of security, SELinux can be intimidating for beginners due to its complexity and comprehensive control mechanisms. This article aims to simplify SELinux for new Linux users, offering a practical introduction to its functionalities, basic operations, and tips for effective management. What is SELinux? SELinux is a mandatory access control (MAC) system embedded into Linux distributions. It augments the traditional Unix/Linux discretionary access control (DAC) systems by providing additional, fine-grained control over system resources and processes. Developed by…

In the realm of web server administration, ensuring the security of your server environment is paramount. One of the most effective tools for securing Linux servers is Security-Enhanced Linux (SELinux), a mandatory access control (MAC) security mechanism. When it comes to serving web content with Apache, the most popular web server, configuring SELinux correctly is crucial to both security and functionality. This article guides you through the steps to configure SELinux to allow Apache to serve a new directory, ensuring your web content is both secure and accessible. Understanding SELinux Contexts Before diving into the configuration, it’s essential to understand…

In the world of Java development, Apache Maven stands as a pivotal tool for project management and comprehension. It simplifies the build process like compiling and packaging, and also manages project dependencies. However, Maven users occasionally face issues that can hinder their development workflow, one of which is the “Invalid target release: 21” error. This error can occur for several reasons, but it primarily signals a discrepancy between the Java version used for the project and the version recognized by Maven. This article will delve into the causes of this error and offer practical solutions to resolve it effectively. Understanding…

When managing server tasks on Amazon Linux, you might encounter the “-bash: crontab: command not found” error. This error message indicates that the crontab command, which is used for scheduling tasks to run at specified times, is not available in your current environment. This issue can be a stumbling block, especially for system administrators and developers who rely on cron jobs for automation. However, resolving this issue is straightforward and can be done in a few simple steps. Understand the Cause The primary reason for encountering this error is the absence of the cronie package, which provides the crontab command,…

In the rapidly evolving landscape of cloud computing, the ability to efficiently deploy and manage resources is crucial for developers and organizations. Amazon EC2 (Elastic Compute Cloud) stands out as a pivotal service within AWS (Amazon Web Services), offering scalable computing capacity. Coupled with Terraform, an open-source infrastructure as code software tool, deploying EC2 instances becomes a streamlined and automated process. This guide provides a comprehensive walkthrough on how to deploy Amazon EC2 instances using Terraform, ensuring a seamless, scalable, and manageable cloud environment. Prerequisites Before diving into the deployment process, ensure you have the following prerequisites in place: AWS…

In the digital era, securing data in transit and at rest is paramount for any organization. Elasticsearch, a popular open-source search and analytics engine, is no exception. It’s widely used for log or event data analysis, full-text search, and complex queries. However, without proper security measures, sensitive data can be vulnerable to interception and unauthorized access. Enabling SSL/TLS (Transport Layer Security) in Elasticsearch is a crucial step in safeguarding your data. This comprehensive guide outlines the steps to configure SSL/TLS, ensuring enhanced security for your Elasticsearch cluster. Prerequisites Before you begin, ensure you have the following: An Elasticsearch cluster set…

Deploying a .NET Core application on Internet Information Services (IIS) can seem daunting at first, but with the right steps, it’s a straightforward process. This guide will walk you through deploying your .NET Core application on IIS, from prerequisites to troubleshooting common issues. Prerequisites Before starting, ensure you have the following: .NET Core Runtime and Hosting Bundle: Installed on the server where IIS is running. This bundle allows IIS to host .NET Core applications. IIS Configured on Windows Server: Make sure IIS is installed and running. You can install it through the Windows Server Manager or PowerShell. Administrator Access: You’ll…

In the modern development landscape, versatility and efficiency in deploying applications are paramount. This is particularly true when working with .NET Core, Microsoft’s cross-platform framework, which has seen significant adoption for building a wide range of applications. One common scenario involves running multiple .NET Core applications on the same server. This guide provides a comprehensive walkthrough on how to run multiple .NET Core applications side-by-side on a single Ubuntu instance without relying on Docker, covering everything from installation to configuration and deployment. Introduction Docker and containerization offer powerful ways to isolate and deploy applications. However, there are scenarios where running…