# Awesome Source a.k.a ### Open Source <small>&dash; a presentation by Siddhant Rimal</small> ---  ## Open Source Software in Data Centres  <blockquote cite="https://www.computerworld.com/article/2538737/network-software/open-source-software-in-the-data-center.html"><small>__“In general, enterprises are using open source in the following three primary areas: Web presence and portals, the small to medium-size database tier and the application tier”__<sup style="font-size: 0.8em;">[[1]]</sup><br/> &dash; James Staten, Analyst, Forrester Research Inc.</small></blockquote> [1]: https://www.computerworld.com/article/2538737/network-software/open-source-software-in-the-data-center.html ___ ### Why? 1. Speeds delivery of software and hardware solutions 1. Saves money 1. Provides flexibility 1. Helps companies stay on the leading edge of technology development<sup style="font-size: 0.5em;">[[2]]</sup> [2]: https://www.linuxfoundation.org/blog/using-open-source-software-to-speed-development-and-gain-business-advantage/ ___  ###  <span style="background-color:rgba(255,255,255,.3); color:#000; padding-left:.1em; padding-right:.1em;" >but,</span> __How?__  Note: [1]Faster, easier aquisition process [2]Quicker Deployments [3]Rapid evolution and innovation [4]Higher quality [5]Ease of customization [6]Evolutionary delivery ---  ## Open Source Software in Cloud Computing ---  ## Web Presence  ___ ### Apache  * Most widely used Webserver software  * Runs 67% of all webservers in the world  * Fast, Reliable, Secure and highly customizable  ___ ### Jetty  * Eclipse Jetty is a Java HTTP server and Java Servlet container  * Used particularly in machine-to-machine communications in large sotware frameworks  ___ ### Zend Framework  * Collection of professional PHP packages with more than 184 million installations  * It can be used to develop web applications and services using PHP 5.6+, and provides 100% object-oriented code using a broad spectrum of language features  * Focused on Simplicity, Reusability and Performance  ---  ## Database Tier  ___ ## MySQL  * MySQL is a database management system  * Popularly paired with PHP  ___ ## PostgreSQL  * PostgreSQL is a powerful, open source object-relational database system  ___  ### A quick diff  |MySQL|PostgreSQL| |---|---| |The Governance model is not open source|PostgreSQL Global Development Group fully licensed open-source| |FreeBSD OS support|HP-UX support| ___  ### A quick diff  |MySQL|PostgreSQL| |---|---| |Replication is master-master, but can also support master-slave|Replication properties are same as MySQL along with added modes of replications possible with 3rd party extensions| ___  ### A quick diff  |MySQL|PostgreSQL| |---|---| |MySQL Cluster to perform horizontal clustering|Doesn't implement true partitionings| ||More access methods such as the platform's native C library| ---  ## Application Tier  ___ ## Zope  * Z Object Publishing Environment  * Open source web application server written in Python  ___ ## Plone  * Can be classified as Enterprise CMS  * Plone is a free and open source content management system built on top of the Zope application server  ___  ## AJAX  * Asynchronous JavaScript and XML  * Is a Rich Internet Application technology.  * Ajax uses XHTML for content, CSS for presentation, along with Document Object Model and JavaScript for dynamic content display.  ___  ## AJAX  #### <small>an example: _on the html side_</small> ``` <!DOCTYPE html> <html> <body> <div id="demo"> <h2>Let AJAX change this text</h2> <button type="button" onclick="loadDoc()">Change Content</button> </div> </body> </html> ``` ___  ## AJAX  #### <small>an example: _AJAX snippet_</small> ``` function loadDoc() { var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { document.getElementById("demo").innerHTML = this.responseText; } }; xhttp.open("GET", "ajax_info.txt", true); xhttp.send(); } ``` ___  ## AJAX  <h4><small>a <button style="font-size: 1em; line-height:1em; margin-top:.0em;" onclick="swal.queue([{ title: 'Your public IP', confirmButtonText: 'Show my public IP', text: 'Your public IP will be received via AJAX request', showLoaderOnConfirm: true, preConfirm: function () { return new Promise(function (resolve) { $.get('https://api.ipify.org?format=json') .done(function (data) { swal.insertQueueStep(data.ip) resolve() }) }) }, type:'info' }])">DEMO</button> _courtesy of [Sweet Alert 2](limonte.github.io/sweetalert2/)_<sup style="font-size: .4em">[MIT](https://opensource.org/licenses/MIT "MIT License")</sup></small></h4> ___ ## Apache Struts  * Made for JVM  * free, open-source, MVC framework for creating elegant, modern Java web applications  * favors convention over configuration, is extensible using a plugin architecture, and ships with plugins to support REST, AJAX and JSON  ---  ### System and Network Management Tier  ___ ## Nagios  * comprehensive monitoring tool  * centralized visibility and, escalation awareness capabilities  * Time-tested, reliable, stable, extendable and, proven architecture  ___ ## NetXMS  * Unified platform for management and monitoring of the entire IT infrastructure  * Designed for maximum performance and scalability  * Distributed network monitoring and automated network discovery  * Flexible and easy to use event processing  ___ ## Pandora FMS  * On premise monitoring system  * Monitors: Network, Server, UX, APM, Inventory, SLA, IOT, Logs collection, Business activity, Remote control and, more ···  * Community development. But, has a payment model for enhanced features  ___ ## Cacti  * complete RRDtool-based graphing solution  * web-based monitoring  * fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box  ___ ## Hyperic  * application monitoring and, performance and availabilty management of a broad range of OS, middleware and, applications running on physical, virtual and, cloud environments  * developed by VMware  --- ## presentation.EOF(1); <small>_In the spirit of Open Source, this presentation is brought to you with [Reveal.js](https://github.com/hakimel/reveal.js/)_<sup style="font-size: .4em">[MIT](https://opensource.org/licenses/MIT "MIT License")</sup></small><br/> <small>&hearts; _continuously deployed from [Github](https://github.com/siddhantrimal/remember) with free stock photos from [Plexels.com](https://www.pexels.com)_<sup style="font-size: .4em">[CC0](https://creativecommons.org/share-your-work/public-domain/cc0/ "Creative Commons 0")</sup></small>