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Implementing OpenShift
Implementing OpenShift

Implementing OpenShift: The cloud is a liberating environment when you learn to master OpenShift. Follow this practical tutorial to develop and deploy applications in the cloud and use OpenShift for your own Platform-as-a-Service.

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Implementing OpenShift

Chapter 2. Using OpenShift

In Chapter 1, Understanding the Essentials, we discussed a number of technologies, including coverage of the Cloud and its service model paradigms, SSH, and Git, and a very high-level overview of the OpenShift Architecture in order to gain perspective on how all the components combine to deliver a platform as a service. Now, we are about to begin utilizing this platform for our development or web application hosting needs.

The following are the three common ways in which we can utilize OpenShift as a user:

  • Command-line utilities

  • Web Console

  • IDE integration

Each of these utilize the OpenShift REST API at the backend; therefore, as a user, we could potentially orchestrate OpenShift using the API with such common command-line utilities as curl to write scripts for automation. We could also use the API to write our own custom user interface, if we had the desire. In the following sections, we will explore using each of the currently supported user experiences, all of which...

Getting started using OpenShift


As discussed previously, we will be using the OpenShift Online free hosted service for example portions. OpenShift Online has the lowest barrier of entry from a user's perspective because we will not have to deploy our own OpenShift PaaS before being able to utilize it. Since we will be using the OpenShift Online service, the very first step is going to be to visit their website and sign up for a free account via https://openshift.redhat.com/app/account/new.

New account form

Once this step is complete, we will find an e-mail in our inbox that was provided during sign up, with a subject line similar to Confirm your Red Hat OpenShift account; inside that e-mail will be a URL that needs to be followed to complete the setup and verification step. Now that we've successfully completed the sign up phase, let's move on to exploring the different ways in which we can use and interact with OpenShift.

Command-line utilities


Due to the advancements in modern computing and the advent of mobile devices such as tablets, smart phones, and many other devices, we are often accustomed to Graphical User Interface (GUI) over Command-Line Interface (CLI) for most of our computing needs. This trend is heavier in the realm of web applications because of the rich visual experiences that can be delivered using next generation web technologies. However, those of us who are in the development and system administration circles of the world are no strangers to the CLI, and we know that it is often the most powerful way to accomplish an array of tasks pertaining to development and administration. Much of this is a credit to powerful shell environments that have their roots in traditional UNIX environments; popular examples of these are bash and zsh. Also, in more recent years, PowerShell for the Microsoft Windows platform has aimed to provide some relatively similar CLI power.

Note

The shell, as it is referenced...

Web Console


With the advent of modern web technologies such as HTML5, user interactions with the web have become more and more common, and that mindset is exactly what OpenShift aims to help developers deliver, or provide application administrators the ability to run. In this spirit, the OpenShift development team has written their own web user interface on which we can perform the following actions on applications:

  • View

  • Create

  • Delete

  • Restart

  • Obtain detailed information

In this section, we will walk through the steps and show how to interact with the OpenShift Online web console.

Note

The OpenShift web console, just as the command-line utilities, is continuously undergoing active development, so certain views in the diagrams to follow are subject to change.

First, we will need to log in; then navigate to https://openshift.com with your favorite web browser and click on MY APPS at the top right. From there, we will be presented with a page similar to the following screenshot:

My Applications

The thing...

IDE Integrations


Some developers enjoy their command-line editors, such as Vim or Emacs; some enjoy a graphical text editor targeted at developers, such as Gedit, Sublime Text, Kate, TextMate, or Notepad++, and others enjoy an IDE. An IDE is a piece of software used to develop software, often containing things such as build automation tools, debugging capabilities, compilers, interpreters, and often with a plugin ecosystem to provide extended functionality. Two examples of very popular IDEs are the Open Source IDE, named Eclipse, and Microsoft's Visual Studio. Continuing with the theme of offering developers as much choice as possible, not only does OpenShift offer command-line utilities and a web console, but also an IDE with built-in OpenShift capabilities named JBoss Developer Studio (JBDS) by Red Hat, which is based on the Open Source Eclipse IDE.

The first step is to download and install JBDS by following the instructions available at https://devstudio.jboss.com/download/7.x.html; once...

Summary


Hopefully, we can select our preferred method of deploying on OpenShift, and developers of all backgrounds, preferences, and development platforms will feel at home working with OpenShift as a development and deployment platform. In Chapter 3, OpenShift – Technologies and Working, we will work through some details of how the OpenShift platform works internally as a service, discussing the different components and their individual roles within the service.

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Key benefits

  • Discover what the cloud is, tear through the marketing jargon, and go right to the tech
  • Understand what makes an open source Platform-as-a-Service work by learning about OpenShift architecture
  • Deploy your own OpenShift Platform-as-a-Service cloud using DevOps orchestration and configuration management

Description

Gone are the days of having to provision hardware, deploy, and manage an entire environment just to write code for the next big idea, project, or custom web application. A Platform-as-a-Service cloud aims to fulfill this need, allowing developers to work more efficiently as well as allowing DevOps teams to spend less time fulfilling requests for these environments. Join us as we move into the future with OpenShift. Implementing OpenShift will walk the reader through how to easily develop and deploy upon an open source OpenShift Platform-as-a-Service. We will then discuss the architecture of the platform so that users have some insight into the inner workings of the environment. We will then take a step away from the user aspect and cover DevOps topics so that we can perform the deployment of our very own open source Platform-as-a-Service using the upstream OpenShift Origin code base. Developers are no longer in need of provisioning full-scale development environments by provisioning servers, installing and configuring software, and maintaining infrastructure just to write software. This book will show you how developers can move out of this archaic mindset and into the future utilizing OpenShift Platform-as-a-Service technologies, breaking away from the marketing jargon and into the technology that allows developers to get work done. This book also delves into the realm of DevOps, allowing you to run your own environment to support your development teams more efficiently. This book will show you how the OpenShift Platform-as-a-Service can redefine the way web application developers work by providing the building blocks upon which they are able to create their next big idea. From there, the reader will progress through the OpenShift architecture and on to a brisk automated deployment using DevOps technologies. You will learn everything you need to know in order to use OpenShift to develop and deploy applications in the cloud as well as how to deploy your very own OpenShift Origin-based Platform-as-a-Service cloud.

Who is this book for?

This book is for software developers and DevOps alike who are interested in learning how to use the OpenShift Platform-as-a-Service for developing and deploying applications, how the environment works on the back end, and how to deploy their very own open source Platform-as-a-Service based on the upstream OpenShift Origin project.

What you will learn

  • Learn more about the cloud, it s different service models, and what each one means to their target audiences
  • Master the use of OpenShift Online through the command line, web interface, and IDE integrations
  • Understand the OpenShift architecture, breaking into how the open source Platform-as-a-Service works internally
  • Deploy an OpenShift Origin-based Platform-as-a-Service in your own environment using DevOps automation tools
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Length: 116 pages
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Language : English
ISBN-13 : 9781782164722
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Table of Contents

4 Chapters
Understanding the Essentials Chevron down icon Chevron up icon
Using OpenShift Chevron down icon Chevron up icon
OpenShift – Technologies and Working Chevron down icon Chevron up icon
Deploying an OpenShift PaaS Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3
(3 Ratings)
5 star 0%
4 star 33.3%
3 star 0%
2 star 33.3%
1 star 33.3%
tomas1989 Dec 19, 2014
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Manualino pratico per il deploy di una soluzione PaaS con Openshift. Non molto dettagliato ma comunque un ottimo inizio. !
Amazon Verified review Amazon
Anon Dec 23, 2013
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
Not a lot of content. Many pages of screenshots, etc. Ended up only skimming the book after the first chapter.
Amazon Verified review Amazon
keiran Mar 23, 2014
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
I was hoping this book would fill the documentation void in the Openshift world when it comes to deploying Openshift in a production environment.Unfortunately, it comes across as a rushed companion to the Openshift Origin documentation.Hopefully we'll see some better books on this subject in the future....
Amazon Verified review Amazon
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