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- Herausgeber: Packt Publishing
- Kategorie: Fachliteratur
- Sprache: Englisch
DevOps is the most widely used software engineering culture and practice that aim sat software development and operation. Continuous integration is a cornerstone technique of DevOps that merges software code updates from developers into a shared central mainline.
This book takes a practical approach and covers the tools and strategies of DevOps. It starts with familiarizing you with DevOps framework and then shows how toper form continuous delivery, integration, and deployment with DevOps. You will explore DevOps process maturity frameworks and progression models with checklist templates for each phase of DevOps. You will also be familiar with agile terminology, methodology, and the benefits accrued by an organization by adopting it. You will also get acquainted with popular tools such as Git, Jenkins ,Maven, Gerrit, Nexus, Selenium, and so on.You will learn configuration, automation, and the implementation of infrastructure automation (Infrastructure as Code) with tools such as Chef and Ansible.
This book is ideal for engineers, architects, and developers, who wish to learn the core strategies of DevOps.
This book is embedded with useful assessments that will help you revise the concepts you have learned in this book. This book is repurposed for this specific learning experience from material from Packt's Hands-on DevOps by Sricharan Vadapalli.
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Seitenzahl: 100
Veröffentlichungsjahr: 2018
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Table of Contents
DevOps: Continuous Delivery, Integration, and Deployment with DevOps
DevOps: Continuous Delivery, Integration, and Deployment with DevOps
Copyright © 2018 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: March 2018
Production reference: 1080318
Published by Packt Publishing Ltd.
Livery Place, 35 Livery Street
Birmingham B3 2PB, UK.
ISBN: 978-1-78913-299-1
www.packtpub.com
Credits
This book is a blend of text and quizzes, all packaged up keeping your journey in mind. It includes content from the following Packt product:
Meet Your Expert
We have the best works of the following esteemed author to ensure that your learning journey is smooth:
Sricharan Vadapalli is an Information Technology leader with over 2 decades of experience in leading IT strategy and developing Next Generation IT solutions. Passionate with technology, build practices around DevOps, Big Data, cloud, SAP HANA and EIM (Enterprise Information Management) associated with tech startups, instrumental in devising Go-Market strategy, strong proponent of open source tools adoption, microservices, and containers. Played leadership roles with MNC's such as TCS, Infosys, CSC, Virtusa Polaris, handled fortune client engagements across multiple domains such as BSFI, retail, telecom and manufacturing.
Preface
This book is about DevOps which is the most widely used software engineering culture and practice that aims at software development and operation. Continuous integration is a cornerstone technique of DevOps that merges software code updates from developers into a shared central mainline.
So, if you want to implement the strategy of DevOps, you are in the right path.
What's in It for Me?
Maps are vital for your journey, especially when you're holidaying in another continent. When it comes to learning, a roadmap helps you in giving a definitive path for progressing towards the goal. So, here you're presented with a roadmap before you begin your journey.
This book is meticulously designed and developed in order to empower you with all the right and relevant information on DevOps. We've created this Learning Path for you that consists of four lessons:
Lesson 1, Introduction to DevOps, focuses on business trends, drivers, market propellers of evolution, and adoption of DevOps. The key technological concepts are introduced for big data, cloud, data sciences, and in-memory computing. You will also get to know DevOps application scenarios and the benefits of adoption for an organization.
Lesson 2, DevOps Framework, covers source code management, build, repository, release managements, and test automation. Continuous integration, delivery, deployment is also covered along with infrastructure automation for configuration (Infrastructure as Code), application monitoring, and so on.
Lesson 3, DevOps – Continuous Integration and Delivery, describes the CI/CD methodology with open source popular tools such as Git, Maven, Gerrit, Nexus, Selenium, and Jenkins. You will also learn different tools and plugins compatible with Jenkins.
Lesson 4, DevOps Continuous Deployment, shows the popular continuous deployment tools Ansible and Chef; their advanced features such as Habitat, Automate, and Compliance for security. You will go through the core components, architecture, and terminology of Chef, cookbooks knife, Playbooks, and towers. You will also understand how to improve the code quality by using continuous monitoring tools such as Splunk and Nagios.
What Will I Get from This Book?
Prerequisites
This book is for engineers, architects, and developers, who wish to learn the core strategies of DevOps. Some of the prerequisites that is required before you begin this book are:
Chapter 1. Introduction to DevOps
In the traditional approach to application development and maintenance, multiple stakeholders, departments, groups, and vendors are involved in the overall software development life cycle (SDLC). Most of us are familiar with the stages of application life cycle management: the business requirements are gathered by a business analyst, then developed by the development team (or could have been outsourced), and tested by QA teams (also could have been outsourced) for functionality and fitness for purpose. Performance and stress testing were also performed in applicable scenarios, by appropriate groups with relevant tools. Then the production deployment process, with a checklist and approvals, was managed by the IT teams at the organization, followed by monitoring and support by maintenance teams. And we notice that each stage of the maturity cycle, from functionality development to usability and maintenance, is managed in silos, by independent teams, departments, processes, and tools. This approach is often fragmented by techniques, frameworks, processes, people, and tools impacting the final product in terms of features, cost, schedule, quality, performance, and other administrative overheads such as interfacing and integration between vendors. Also, in this method the maintenance, support costs, and skill needs are often overlooked. However, both from application life cycle and business points of view, maintenance and support activities are key and important to assess, evaluate, and estimate well in advance.
In this lesson, we will cover the following topics:
Many technological innovations have taken place to challenge the traditional method of IT management in almost every segment. The technological advances and changes are quite profound, rapid, and often intermingled, encompassing multiple fields such as agile methodology, DevOps, big data, cloud, and so on. A comprehensive and holistic approach will undoubtedly be rewarding and derive maximum value for organizations. Many institutions have already embarked on this journey towards the future, adopting these technologies.
The pre-DevOps software development challenges are reluctant to change in systems; deployments fraught with risk, lack of consistency across environments (it works on my machine syndrome), the impact of silos--toss problems across the wall such as teams resulting in duplication of effort, skill sets, and in-fighting. To mitigate the mentioned issues and bridge this gap DevOps emerged as a popular choice.
DevOps (Development plus Operations) has recently taken center stage in the SDLC. DevOps offers process frameworks augmented with open source tools to integrate all the phases of the application life cycle, and ensure they function as a cohesive unit. It helps to align and automate the process across the phases of development, testing, deployment, and support. It includes best practices such as code repositories, build automation, continuous deployment, and others.
DevOps adoption for systems including big data systems and projects is a cultural shift compared to traditional development cycles. The purpose of this book is to put forth the concepts and adoption strategy for an organization, covering the technology areas of DevOps, big data, cloud, data science, in-memory technology, and others. Adopting and adhering to DevOps practices will be rewarding for any organization and allow it to improve on its performance and efficiency.
Acceptance of open source tools for each segment of IT functionality, their popularity, and versatility, is increasing day by day, across the world. As a matter of fact, many new tool variants have been introduced to the market for each segment. The open source tools for DevOps are major contributors to the success of DevOps' adoption in the market by institutions, which is discussed in detail in coming sections.
As we can see, across industries DevOps adoption has seen steady growth year on year:
DevOps penetration in enterprises shows a healthy trend, as per the following figure:
DevOps application - business scenarios
Application of DevOps varies for multiple scenarios, with accrued benefits as listed:
