Limit Ranges in Kubernetes
In this article, we will create a limit range and see how to set minimum and maximum values for the CPU resources used by Containers and Pods. We will see different scenarios with Limit and Request on...
View ArticleRole-based access control (RBAC) in Kubernetes
In this article, we will understand the basics of RBAC and create Role, ClusterRole, RoleBinding and ClusterRoleBinding Objects. We will then create a kubeconfig file to give limited access to a...
View ArticleCreating your first deployment on a Kubernetes Cluster
In this article, we will see how to create your first deployment on a Kubernetes Cluster using the kubectl command on the Linux shell.
View ArticleHow to Install Observium Network Monitoring Tool on Debian 11
Observium is a network monitoring tool for your server infrastructure. It's an auto-discovering network monitoring platform with low maintenance and supports a wide range of network devices and...
View ArticleHow to Install Mastodon Social Network on Ubuntu 22.04
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...
View ArticleHow to Install RabbitMQ Cluster 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...
View ArticleHow to Install Caddy Web Server with PHP 8.1 on Ubuntu 22.04
Caddy is a modern web server built in the GO language. It is a simple, user-friendly, lightweight, and commercially supported web server. In this post, we will explain how to install the Caddy web...
View ArticleHow to Install and Use Nessus Security Scanner on Rocky Linux
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...
View ArticleHow to Install ReactJS with Nginx on Ubuntu 22.04
React.js is a free and open-source JavaScript framework developed by Facebook in 2011. It is used for building reusable UI components and helps users to create rich and engaging web apps fast and...
View ArticleHow to Install LibreNMS with Nginx on Ubuntu 22.04
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...
View ArticleRolling Updates and Rollbacks in Kubernetes
In this article, we will update the deployment with the default Rolling update strategy and rollback the deployment. To rollback the deployment, we will use the incorrect image in one of the updates to...
View ArticleStatic pods in Kuberentes
Static Pods are managed directly by the kubelet and the API server does not have any control over these pods. The kubelet is responsible to watch each static Pod and restart it if it crashes.
View ArticleLabels and Selectors in Kubernetes
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...
View ArticleHow to Create a Kubernetes Cluster with AWS CLI
Elastic Kubernetes Service (EKS) is a managed Kubernetes service that is hosted on AWS. In this guide, we will leam how to create a Kubernetes cluster on AWS with EKS. You will learn how to create an...
View ArticleResource Limits in Kubernetes
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...
View ArticleLinux pwd Command Tutorial for Beginners (with Examples)
The pwd command, like ls and cd, is one of most frequently used Linux utilities. Regardless of the kind of user you are (newbie or pro), you'll find yourself using this command line tool a lot. So in...
View ArticleHow to Install Apache Hadoop on Ubuntu 22.04
Apache Hadoop is an open-source framework for processing and storing big data. In this tutorial, we will install the latest version of Apache Hadoop on an Ubuntu 22.04 server. Hadoop gets installed on...
View ArticleHow to Install Jenkins on Rocky Linux 9
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...
View ArticleHow to Install Jellyfin Media Server on Rocky Linux 9
Jellyfin is a free and open-source media server that allows you to stream content that can be accessed from anywhere. In this tutorial, you will learn how to install Jellyfin Media Server using Docker...
View ArticleHow to Install ERPNext on Ubuntu 22.04
ERPNext is a free and open-source ERP software used by manufacturers, distributors, and services. It is built with Python, JavaScript, and Frappe Framework. In this tutorial, we will show you how to...
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