Linux Tutorials
Linux is a free and open-source operating system kernel that serves as the foundation for numerous operating systems, commonly known as Linux distributions. Developed by Linus Torvalds in 1991, Linux is based on Unix principles and has grown into one of the most popular operating systems worldwide, especially in servers, supercomputers, and embedded systems. Its flexibility, security, and community-driven development make it ideal for various environments, from personal computers to large-scale enterprise systems. Distributions like Ubuntu, Fedora, and Debian provide different versions of Linux, tailored to various user needs. Linux’s open-source nature allows anyone to modify, distribute, and contribute to its development, fostering a global ecosystem of developers and users.
Jenkins is an open-source automation tool for Continuous Integration/Continuous Delivery (CI/CD). is entirely written in Java with the support of more than 1000 plugins for building, deploying, and automating your project.
In this article, we will see an example of a resource limit and request for CPU and Memory. We will also use Metric Server. The Metrics Server is an aggregator of resource usage data in the cluster and it is not deployed by default in the cluster. We will use this Metric Server to see the resource consumption by pods.
Labels can be used to organize and to select Kubernetes objects. In this article, we will create a Pod with Labels to it and redirect the requests to it from the service using Selector. We will also perform get, delete operations on Pod and Service using Label/Selectors on the command line.
LibreNMS is a free, open-source, and powerful network monitoring tool for Linux-based operating systems. In this tutorial, we will show you step-by-step instructions on how to install LibreNMS on Ubuntu 22.04.
Nessus is an open-source network vulnerability scanner for vulnerability assessments, penetration testing, and ethical hacking. It uses the Common Vulnerabilities and Exposures (CVE) architecture and is one of the most comprehensive vulnerability scanners on the market. This guide describes how to install Nessus Security Scanner on the Rocky Linux server. Also, this will helps you to set up the Nessus CLI that allows you to manage Nessus via the terminal command line. And lastly, this also describes how to scan the server with Nessus.
Mastodon is free and open-source software for running self-hosted social networking services. It offers microblogging features that allow you to follow other users and post messages and images with Mastodon. In this tutorial, we will show you how to install Mastodon on Ubuntu 22.04.
RabbitMQ is a free and open-source message broker. In this tutorial, we will install and set up the RabbitMQ server between multiple Ubuntu 22.04 machines. You’ll also learn how to set up an administrator user for RabbitMQ and set up classic queue mirroring via the HA policy.
Odoo (formerly known as OpenERP) is a self-hosted suite of over 10,000 open Odoo is a free and open-source ERP solution for multiple types of businesses. In this tutorial, we will the Odoo open-source ERP on the Ubuntu 22.04 server.
A namespace is helpful when multiple teams are using the same cluster. This is used when there is a potential of name collision. In this article, we will create a namespace and create a pod in the newly created namespace. We will also see how a namespace can be set as a default namespace.
LibreNMS is a monitoring tool that supports auto-discovery with multiple protocols, including SNMP, ARP, OSPF, and BGP. In this guide, you will learn how to install the LibreNMS monitoring tool on the Rocky Linux server. This guide includes the installation of the LEMP Stack (Nginx, MariaDB, and PHP-FPM) and the basic configuration of the SNMP service.