While you facing network connectivity issues, the first thing is to check what ports are actually in use on your system and which application is listening on a specific port. In this tutorial described how to use netstat, ss and lsof commands to find out which services are listening on which ports. Listening Port# Port
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Setting up a DevOps Pipeline in AWS
In this article, we will guide you through how to set up a DevOps pipeline in AWS. However, let’s start off with defining what DevOps actually is. In the past, application development was usually split between two teams – development and operations. The development team would write the code, test it, and then deliver it
How to Install Elasticsearch on CentOS 8
Elasticsearch is a powerful open-source analytics and full-text search engine. It provides a distributed, multitenant-capable architecture which enables you to store, search and analyze large volumes of data faster. Elastic search is freely available under the Apache 2 license, which provides the most flexibility. In this tutorial we will show you how to install Elasticsearch
How to Install Memcached on Ubuntu 20.04
Memcached is a free and open-source high-performance in-memory key-value data store. It is generally used to speed up applications by caching various objects from the results of API and database calls. This article shows how to install and configure Memcached on Ubuntu 20.04. Installing Memcached # The memcached package is included in the default Ubuntu
How to Install Apache Maven on Ubuntu 20.04
Apache Maven is a very useful open-source project management tool based on POM (project object model). Primarily, it is used to manage Java projects and manage a project’s build, reporting, and documentation. This tutorial show you how to install and configure Apache Maven on Ubuntu 20.04 LTS. Prerequisites# Make sure you are logged in as
Python map() Function
map() is a built-in function in Python that applies a function to all elements in a given iterable. It allows you to write simple and clean code without using loops. Python map() Function # The map() function takes the following form: map(function, iterable, …) It accepts two mandatory arguments: function – Function that is called
How to Install Vagrant on Debian 10
Vagrant is a an open-source tool for building and managing virtual machines. Generally, Vagrant is used by developers to set up a development environment that works across multiple operating systems. In this tutorial, we will show you how to install Vagrant on Debian 10. Prerequisites# Virtualbox should installed on your Debian 10 system. You must
How to Install Gradle on Ubuntu 20.04
Gradle is a general-purpose tool used to build, automate, and deliver software. It is primarily used for Java, C++, and Swift projects. Gradle combines the best features of Ant and Maven. Unlike its predecessors, which use XML for scripting, Gradle uses Groovy, a dynamic, object-oriented programming language for the Java platform to define the project
How to Install Apache Maven on Debian 10
Apache Maven is a very useful open-source project management tool based on POM (project object model). Primarily, it is used to manage Java projects and manage a project’s build, reporting, and documentation. This tutorial show you how to install and configure Apache Maven on Debian 10. Prerequisites# Before starting installation, ensure that you are logged
How To Set Up Nginx Server Blocks on Ubuntu 20.04
A server block is an Nginx directive that defines settings for a specific domain, allowing you to run more than one website on a single server. For each website, you can set the site document root (the directory which contains the website files), create a separate security policy, use different SSL certificates, and much more.