How to Install Metabase Business Analytics on Ubuntu 20.04 LTS

Metabase is a free and open-source business intelligence tool that can be used to search data sets and display information. In this tutorial, we will explain how to install Metabase on Ubuntu 20.04 with Nginx and Let's Encrypt SSL.

How to install Angular on Ubuntu 20.04 LTS

Angular is an open-source web application framework for building mobile and desktop web applications. It is written in TypeScript/JavaScript. In this tutorial, we will show you how to install Angular on Ubuntu 20.04.

Role-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 particular user on a selected namespace.

How To Install OCS Inventory Asset Management Software on Ubuntu 20.04 LTS

OCS Inventory also known as "Open Computers and Software Inventory Next Generation" is a free asset management platform. In this tutorial, we will explain how to install OCS Inventory server on Ubuntu 20.04.

How to Install and Use BackupPC Backup Software on Ubuntu 20.04 LTS

BackupPC is a free, open-source and web-based backup software suite that can be used for backing up Linux, Windows and macOS PCs and laptops. In this tutorial, we will show you how to install BackupPC on Ubuntu 20.04 server.

How to Install Matomo Web Analytics on Ubuntu 20.04

Matomo formerly known as Piwik is a free and open-source web analytics application that helps you to tracks online-visitors on your website. In this tutorial, we will show you how to install Matomo web analytics on Ubuntu 20.04 with Nginx and Let's Encrypt SSL.

How to Install Mattermost Team Messaging System on Ubuntu 20.04

Mattermost is an open-source and self-hosted messaging application used for chat, file sharing, search, and integrations. It is an alternative to Slack chat that brings all your team communication into one place.

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 the CPU.

How to Install and Configure MongoDB on CentOS 8

MongoDB is a NoSQL database that provides high performance, high availability, and automatic scaling. In this tutorial, I will guide you to install and configure MongoDB 4.4 (stable) on a CentOS 8 server. We will add and configure the administrator user for MongoDB and configure the authentication for MongoDB services.

Install and Use collectl Performance Monitoring Tool on Ubuntu 20.04

Collectl is a light-weight performance monitoring tool that can be used to collect performance data that describes the current system status. In this tutorial, we will show you how to install and use Collectl on Ubuntu 20.04.

How to Install Tiki Wiki on Ubuntu 20.04

In this tutorial, we will show you how to install Tiki Wiki CMS Groupware on Ubuntu 20.04 with Apache web server, MySQL Server, and PHP 7.4. Also, we will secure the Tiki Wiki CMS Groupware with SSL Letsencrypt.

Network Policy in Kubernetes

By default, pods accept traffic from any source. A network policy helps to specify how a group of pods can communicate with each other and other network endpoints.

How to Install Apache Solr on Ubuntu 20.04

Apache Solr is a scalable, reliable, and fault-tolerant NoSQL search tool written in Java and released under an OpenSource license. In this tutorial, we will show you how to install Apache Solr 8.6 on Ubuntu 20.04.

Storage in Kubernetes

Data cannot be stored in the pod, when the pod is deleted or is terminated the data within it does not stay on the system. To provide long-term and temporary storage to Pods in the cluster, Kubernetes provides different types of storage mechanisms.

How to run Python Scripts with Apache and mod_wsgi on Ubuntu 20.04

mod_wsgi is an Apache module that provides an interface for hosting Python based web applications under Apache. In this tutorial, we will learn how to install and set up of mod_wsgi with the Apache server on Ubuntu 20.04 server.

How to integrate ONLYOFFICE editors with Nuxeo Platform

In this tutorial, we’ll learn how to integrate ONLYOFFICE online editors with Nuxeo Platform to edit and collaborate on docs stored there with no need to leave the application. To work with documents within Nuxeo, you need an instance of ONLYOFFICE Document Server.

How to install NodeBB Forum with Nginx and Let's Encrypt SSL on Ubuntu 20.04 LTS

NodeBB is a modern forum software powered by Node.js which uses MongoDB/Redis as database platforms. It uses web sockets for instant interactions and real-time notifications. In this tutorial, we will learn how to install NodeBB forum on a Ubuntu 20.04 based server.

Cheat Sheet for Kubernetes Commands

While working on Kubernetes it is very important that you know at least the basic commands. In this article, you will find the commands which are needed most of the time while working on the cluster.

How to Install i-doit Asset Management Tool on Ubuntu 20.04 LTS

I-doit is an open-source asset management tool that can be used to manage the entire IT system. It offers a wide range of features including, Asset Management, Infrastructure Planning, Ticket System, Cable Management, Inventory, SAN, IP Address Management, Cluster, Patch Management and many more.

Jobs in Kubernetes

A job creates one or more Pods to perform a particular operation and ensures the pods successfully terminate. When a specified number of pods successfully complete, the job is complete. When a job is deleted, it deletes the Pods it created. A Job can also be used to run multiple Pods in parallel.

How to Install TeamPass Password Manager on Ubuntu 20.04

TeamPass is a Collaborative Passwords Manager used for managing passwords and sharing them among team members. In this tutorial, we will be going to show you how to install TeamPass Password Manager on Ubuntu 20.04 with Let's Encrypt SSL.

How to Install Rudder System Auditing Tool on Ubuntu 20.04

Rudder is a free, open-source and multi-platform tool that helps you to automate system configuration across large IT infrastructures. It is an IT Infrastructure Automation & Compliance tool that allows you to manage and maintain your production infrastructure via its auditing feature.

How to Install Lighttpd with PHP-FPM and MySQL on Ubuntu 20.04 LTS

In this tutorial, we will show you how to install and configure the LLMP Stack on the Ubuntu 20.04 Server. We will install the Lighttpd web server with the MariaDB database server and the PHP-FPM on the latest version of the Ubuntu 20.04 server.

Resource 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 it is not deployed by default in the cluster. We will use this Metric Server to see the resource consumption by pods.

How to Install LiteCart e-commerce platform on Ubuntu 20.04 LTS

LiteCart is an open-source and lightweight e-commerce platform in written in PHP, HTML 5, and CSS 3. It is simple, easy to use, and has an elegant and simple admin panel. In this tutorial, we will show you how to install LiteCart shopping cart platform on Ubuntu 20.04.

InitContainers in Kubernetes

Init containers are used to set up custom code that is not present in an app image. Init containers can be used to offer a mechanism to block or delay app container startup until a set of preconditions are met.

How to Install GitLab with Docker on Ubuntu 20.04 LTS

In this tutorial, we will show you how to install GitLab using the Docker and Docker Compose. Also, we will be using the Ubuntu 20.04 as our primary operating system, and install docker from the official Ubuntu FocalFossa repository.

How to create Multi-Container Pods in Kubernetes

Pods usually have a single container i.e. single container pods are the most common use case and it is not necessary to have a single container in the pod. One of the reasons to use a multi-container pod is simpler communication between containers. In this article, we will create a pod with 2 containers inside it. This example will help to understand the creation of a pod with multiple containers.

How to Setup an iSCSI Storage Server on Ubuntu 20.04 LTS

iSCSI stands for Internet Small Computer System Interface is a Storage Area Network protocol that can be used to share block devices such as HDD/SSD partitions, or LVM partitions, or block files on the network. In this tutorial, we will explain how to setup iSCSI targets and iSCSI initiator on Ubuntu 20.04 server.

How to Install a CentOS 8 Minimal Server

This document describes the basic installation of a CentOS 8 server in detail with many screenshots. The purpose of this guide is to provide a minimal setup that can be used as basis for all kinds of CentOS server setups.

How to use Node Selectors in Kubernetes

We can restrict a Pod to only be able to run on a particular Node. In this article, we will create pods to see them get deployed on the worker as well as the master node, then we will attach a label to the master node and point pods to get deployed on the master node only using the nodeSelector.

How to Install Logstash Logfile Analytics Software on Ubuntu 20.04

In this tutorial, we will explain how to install the ELK Stack (Elasticsearch, Logstash and Kibana) on Ubuntu 20.04. Logstash can be used to collect and analyze system logs from a central location.

How to Install Drupal 9 with Nginx and Let's Encrypt SSL on Debian 10

In this tutorial, we will show you how to install Drupal 9 on the Debian Buster 10. We will run Drupal under the LEMP Stack (Linux, Nginx, MySQL/MariaDB, and PHP-FPM), and secure the installation using the SSL Letsencrypt.

How to Install and Configure OpenLiteSpeed Server along with MariaDB and PHP on Ubuntu 20.04

OpenLiteSpeed is a lightweight and open-source version of the LiteSpeed Server developed by LiteSpeed Technologies. In this tutorial, we will learn how to install OpenLiteSpeed Server on Ubuntu 20.04 along with PHP 7.4 and MariaDB server.

How to Install GitScrum Agile Project Management Tool on Ubuntu 20.04 LTS

GitScrum is an open-source project management tool based on the Laravel framework and designed to help development teams to use Git and Scrum for task management for them to be more agile. In this tutorial, we will explain how to install GitScrum on Ubuntu 20.04 server.

Rolling 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 the deployment.

How to install Minecraft Server on Ubuntu 20.04 LTS

Minecraft is an open world and sandbox video game developed by Mojang Studios. In this tutorial, we will show how to setup your own Minecraft server on Ubuntu 20.04 LTS.

How to Setup OpenNMS Network Monitoring Solution on Ubuntu 20.04 LTS

OpenNMS is a free, open-source, and enterprise-grade network management system used for monitoring unlimited devices from the central location. It works by discovering all devices in the network and monitor services automatically.

Labels 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 perform get, delete operations on Pod and Service using Label/Selectors on the command line.

How to integrate ONLYOFFICE and Seafile within UCS

In this tutorial, we’ll learn how to easily integrate ONLYOFFICE and Seafile within Univention Corporate Server.

How to Install Vanilla Forums with Apache and Let's Encrypt SSL on Ubuntu 20.04 LTS

Vanilla Forums is a free and open-source community forum software written in PHP. It is a simple, flexible, customizable and multi-lingual that provides all of the features you need to run a successful forum.

Create Taints and Tolerations in Kubernetes

Taints and tolerations work together to make sure that pods are not scheduled onto inappropriate nodes. One or more taints can be applied to a node, this means that the node should not accept any pods that do not tolerate the taints. The pods that have toleration can only be deployed on those nodes with the taints.

How to Install and Configure mod_pagespeed Module with Apache on Ubuntu 20.04 LTS

A slow website is a major issue faced by most webmasters. You can speed up your website with the help of the mod_pagespeed module. In this tutorial, we will explain how to install mod_pagespeed module for Apache on Ubuntu 20.04 server.

How to create Namespaces in Kubernetes

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.

How to Install Shopware 6 with Nginx and Let's Encrypt SSL on Ubuntu 20.04

Shopware CE is a free and open-source eCommerce platform written in Symfony and Vue.js. In this tutorial, we will show you how to install Shopware CE with Nginx and Let's Encrypt on Ubuntu 20.04.

How to create a Replicaset in Kubernetes

A replica set makes sure the specified replicas of pods are always running. It can be considered as a replacement for the replication controller.

How To Install JFrog Artifactory on Ubuntu 20.04 LTS

JFrog Artifactory is an open-source repository management application that can be integrated with continuous integration and delivery tools. In this tutorial, we will show you how to install JFrog Artifactory on Ubuntu 20.04.

How to create a Service in Kubernetes

A service in Kubernetes is an abstraction layer over Pods. It defines a logical set of Pods. It provides a single IP address and DNS name by which pods can be accessed.

Connect GNOME File Manager or Windows Explorer to an ISPConfig 3 website

This Tutorial shows how to set up access to website files in the file manager application on your workstation. This Tutorial shows this on Linux and Windows.

How to create a Deployment in Kubernetes

A Kubernetes deployment is a resource object in Kubernetes that provides declarative updates to applications. In this article, we will learn to create a deployment in Kubernetes and perform operations on it.