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Apache Spark is a distributed computing system. It consists of a master and one or more slaves, where the master distributes the work among the slaves, thus giving the ability to use our many computers to work on one task. One could guess that this is indeed a powerful tool where tasks need large computations to complete, but can be split into smaller chunks of steps that can be pushed to the slaves to work on. Once our cluster is up and running, we can write programs to run on it in Python, Java, and Scala.
OpenLiteSpeed is a lightweight and open-source version of the LiteSpeed Server developed by LiteSpeed Technologies. It supports Apache Rewrite rules, HTTP/2 and HTTP/3 along with TLS v1.3 and QUIC protocols. It comes with a WebGUI based Administration panel which makes it different from other servers and easier to manage.
Apache Cassandra is an open-source NoSQL database. One of it's main features is it's decentralized nature that gives unique fault tolerance. Having our data replicated across datacenters means our production will not suffer from the loss of one of our sites, something all sysadmins dream of (or really happy to have such setup).
Apache Bench is a useful little tool for testing the response time of a webservice, and thus the performance of the webserver. We can specify the number of requests to send, the target URL, set up concurrency, just to name a few of this tool's settings.
This step by step guide explains how to install Apache, MariaDB, PHP (LAMP Stack) in CentOS 8 minimal server.
Apache OFBiz also known as "Open For Business Project" is a free and open-source ERP system written in Java. It is a suite of business applications that can be used to run all aspects of your business. In this tutorial, we will show you how to install OFBiz CRM on Debian 10 server.
The FAMP stack, which is akin to a LAMP stack on Linux, is a collection of open-source software that is typically installed together to enable a FreeBSD server to host dynamic websites and web applications. FAMP is an acronym that stands for FreeBSD (operating system), Apache (HTTP server), MySQL/MariaDB (database server), and PHP (programming language to process dynamic PHP content).
Apache Spark is a free and open-source cluster-computing framework used for analytics, machine learning and graph processing on large volumes of data. In this tutorial, we will show you how to install Apache Spark on Debian 10 server.
Apache Kafka is a distributed streaming platform. With it's rich API (Application Programming Interface) set, we can connect mostly anything to Kafka as source of data, and on the other end, we can set up a large number of consumers that will receive the steam of records for processing. Kafka is highly scaleable, and stores the streams of data in a reliable and fault-tolerant way.
Fail2ban is a free, open-source and most widely used IPS (Intrusion Prevention System) application that can be used to protect your server against brute force password login attacks. In this post I have explained how to configure and install Fail2ban utility on Centos 8. Also Check out how you can protect your SSH and HTTP against different kinds of attacks using Fail2Ban.
Apache Zookeeper is a free and open-source service for distributed systems that helps you to manage a large set of hosts. In this tutorial, we will show you how to set up a single-node Apache Zookeeper cluster on Debian 10 server.
Apache Cassandra is an open-source high-performance NoSQL database management system with no single point of failure. In this tutorial, we will show you how to install Apache Cassandra on CentOS 8.
Let's Encrypt is a certificate authority created by the Internet Security Research Group (ISRG). It provides free SSL certificates via a fully automated process designed to eliminate manual certificate creation, validation, installation, and renewal. Certificates issued by Let's Encrypt are valid for 90 days from the issue date and trusted by all major browsers today. Learn how to install a free Let's Encrypt SSL certificate on Debian 10, Buster running Apache as a web server.
There are several ways to redirect to HTTPS in Apache. If you have root access to the Linux server where Apache runs, the preferred way is to set up the redirection in the domain's virtual host configuration file. Otherwise, you can set up the redirection in the domain's .htaccess file.
Apache Cassandra is a free and open-source NoSQL database with no single point of failure. It provides linear scalability and high availability without compromising performance.
Apache Velocity is an open source, Java-based template engine and code generator that converts templates into source code. Because it is implemented in Java, it is capable of interpreting varied templates and generating code for any language (web, service, SQL, scripts, etc.), although it seems to be oriented mostly toward web development.
ElkArte is a free, open-source and powerful forum software that allows you to create your own online forum community. In this tutorial, we will explain how to install ElkArte on Debian 10 server.
Apache Maven is a build automation and software project management tool, mainly used for Java projects. In this tutorial, we will be installing Apache Maven on a Debian 10 system and testing it with a simple java application.
In this tutorial, we will show you how to install the Let’s Encrypt client on your CentOS 7 VPS and issue an SSL certificate for your domain.
Starting, stopping, and restarting/reloading are the most common tasks when working with an Apache webserver.
You can create your own local YUM/DNF repository on your local server. Here's how to do that with Apache.
This tutorial explains how to install a free Let’s Encrypt SSL certificate on CentOS 8 running Apache as a web server. We’ll use the certbot tool to obtain and renew the certificates.
Automad is a free, open-source and flat content management system written in PHP language. In this tutorial, we will show you how to install Automad CMS on Debian 10 using Apache web server.
Open source triple store database technology used by the U.S. Navy moves forward as a stable, mature project at the Apache Software Foundation.
Apache HTTP server is the most widely used web server in the world. It is a free, open-source, and cross-platform HTTP server, including powerful features, and can be extended by a wide variety of modules.
From all the web servers available, the Apache Web Server is probably one of the most popular ones.
Developed by the Apache Foundation, Apache is so popular that it runs 70% of all the webservers online.
FreeIPA is a free and open-source Identity, Policy, and Audit (IPA) suite sponsored by RedHat. It's an IPA solution combination of Linux (Fedora), 389 Directory Server, MIT Kerberos, NTP, DNS Bind, Dogtag, Apache web server, and Python.
Brian Behlendorf is perhaps best known for being a co-founder of the Apache Project, which became the Apache Software Foundation. Today, he's the executive director of the Hyperledger Foundation, an organization focused on enterprise-grade, open source, distributed ledgers (better known as blockchains). He also says he "put the first ad banner online and have been apologizing ever since."
TikiWiki is a free and open-source content management system written in PHP language. TikiWiki comes with a rich set of features, including, Forums, Blog, Maps, Workspace, Slideshow, Shopping Cart, Bug and issue tracker, Multilingual, File and image gallery, Events and many more. In this tutorial, we will learn how to install TikiWiki CMS on Debian 10.
The Apache web server is file-based configuration system so it is very easy to configure and you can configure dynamically for any new configuration. This article explains Apache configuration directories for all operating systems.
Recently, I got a rush request to get a three-node Apache Cassandra cluster with a replication factor of two working for a development job. I had little idea what that meant but needed to figure it out quickly—a typical day in a sysadmin's job. Here's how to set up a basic three-node Cassandra cluster from scratch with some extra bits for replication and future node expansion.
Learn, how to monitor Apache (httpd) web server performance in Linux.
It's super easy to get lost in the world of big data technologies. There are so many of them that it seems a day never passes without the advent of a new one. Still, such fast development is only half the trouble. The real problem is that it's difficult to understand the functionality and the intended use of the existing technologies.
From its early days, the availability of source code was one of the defining characteristics of open source software. Indeed, Brian Behlendorf of the Apache web server project, an early open source software success, favored "source code available software."
Debain's latest version 10.1 will be released next month
Apache CouchDB is a free and open-source NoSQL document-oriented database solution that uses JSON to store data. CouchDB is commonly used in mobile replication and synchronization devices as it does not lock the database files at the time of writing. In this article, we will show you how to install Apache CouchDB on a Debian 9 VPS.
Apache HTTP server is one of the most popular web servers in the world. It is an open-source and cross-platform HTTP server that powers a large percentage of the Internet’s websites. Apache provides many powerful features that can be extended through additional modules. In this tutorial, we’ll explain how to install Apache on Debian 10, Buster.
Linux kernel 5.3-rc1 has been released. Linus Torvalds writes, "This is a pretty big release, judging by the commit count. Not the biggest ever (that honor still goes to 4.9-rc1, which was exceptionally big), and we've had a couple of comparable ones (4.12, 4.15 and 4.19 were also big merge windows), but it's definitely up there." He also notes that "...there's a lot to like in 5.3."
Zookeeper is a centralized service for managing configuration information, naming, distributed synchronization, and provisioning of group services that is published as open source software. In this tutorial, we will learn how to set up a single node Apache ZooKeeper Cluster on Ubuntu 18.04 LTS.
News briefs for July 15, 2019.
LEMP is an excellent alternative to traditional LAMP servers. Nginx is lighter weight and faster than Apache in some situations. It can also be configured to do other useful things, like serve as a reverse proxy. Just like with LAMP, Debian is an excellent platform for LEMP servers. Everything you need is available in the Debian repositories, so it's simple to get started.
This tutorial shows how to prepare a Debian 10 server (with Apache2, BIND, Dovecot) for the installation of ISPConfig 3.1. The web hosting control panel ISPConfig 3 allows you to configure the following services through a web browser: Apache web server, Postfix mail server, Dovecot IMAP/POP3 server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, and many more.
Remember the mail merge script I started writing a while back? Yeah, that was quite some time ago. I got sidetracked with the Linux Journal Anniversary special issue (see my article "Back in the Day: UNIX, Minix and Linux"), and then I spun off on a completely different tangent for my last article. Finally, I'm going to finish the mail merge script, just in time for
How to Setup Jenkins with SSL with Apache Reverse Proxy on Ubuntu 18.04. By default Jenkins listens on port 8080 with it’s in-built web server. But it is necessary to secure Jenkins with SSL for protecting the sensitive data.
To lose one board member may be regarded as a misfortune, to lose two looks like carelessness, but to lose three? The nature of the Board of Directors of open source foundations means churn is a normal part of life, indeed many open source board members can be swapped out at the whim of a community vote, as they should. However, the Apache Software Foundation saw three members of its board hand in their resignations last month: chairman Phil Steitz, executive vice president Ross Gardler and, perhaps most significantly, co-founder of the whole show Jim Jagielski.
In this tutorial, we will show you how to install and configure the Varnish HTTP accelerator as a reverse proxy for an Apache web server. Varnish is a proxy server focused on HTTP caching. It's designed as an HTTP accelerator and can act as a reverse proxy for your web server.
Apache HTTP server is one of the most popular web servers in the world. It is an open-source and cross-platform HTTP server that powers a large percentage of the Internet’s websites. Apache provides many powerful features that can be extended through additional modules.
Mod_pagespeed is an Apache module that can be used to improve the speed of Apache web server on Linux. Mod_pagespeed has several filters that automatically optimize Web Pages to improve better performance. In this tutorial, we will learn how to install Mod_pagespeed with Apache on Ubuntu 18.04 server.
FreeIPA is a free and open source Identity, Policy, and Audit (IPA) suite sponsored by RedHat. It's an IPA solution combination of Linux (Fedora), 389 Directory Server, MIT Kerberos, NTP, DNS Bind, Dogtag, Apache web server, and Python.
CouchDB is an open-source fault-tolerant and schema-free NoSQL database maintained by the Apache Software Foundation. CouchDB server stores its data in named databases which contains documents with JSON structure. Each document consists of a number of fields and attachments. Fields can include text, numbers, lists, booleans, more. It is accessible via a RESTful HTTP/JSON API that allows you to read, create, edit and delete database documents. In this tutorial, we will explain how to install the latest version of CouchDB on Debian 9.
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