Book Image

DevOps for Web Development

By : Mitesh Soni
Book Image

DevOps for Web Development

By: Mitesh Soni

Overview of this book

The DevOps culture is growing at a massive rate, as many organizations are adopting it. However, implementing it for web applications is one of the biggest challenges experienced by many developers and admins, which this book will help you overcome using various tools, such as Chef, Docker, and Jenkins. On the basis of the functionality of these tools, the book is divided into three parts. The first part shows you how to use Jenkins 2.0 for Continuous Integration of a sample JEE application. The second part explains the Chef configuration management tool, and provides an overview of Docker containers, resource provisioning in cloud environments using Chef, and Configuration Management in a cloud environment. The third part explores Continuous Delivery and Continuous Deployment in AWS, Microsoft Azure, and Docker, all using Jenkins 2.0. This book combines the skills of both web application deployment and system configuration as each chapter contains one or more practical hands-on projects. You will be exposed to real-world project scenarios that are progressively presented from easy to complex solutions. We will teach you concepts such as hosting web applications, configuring a runtime environment, monitoring and hosting on various cloud platforms, and managing them. This book will show you how to essentially host and manage web applications along with Continuous Integration, Cloud Computing, Configuration Management, Continuous Monitoring, Continuous Delivery, and Deployment.
Table of Contents (16 chapters)
DevOps for Web Development
About the Author
About the Reviewer

Understanding the difference between virtual machines and containers

In recent times, cloud computing has become part of almost all technical discussions. Virtual machines have served a lot of people in utilizing resources efficiently. However, Docker containers have given them competition and, in fact, containers are more effective.

Let's find out the basic differences between both and find out the reason behind the popularity of containers:

Virtual machines


In the virtual machine, we need to install an operating system with the appropriate device drivers; hence, the footprint or size of a virtual machine is huge. A normal VM with Tomcat and Java installed may take up to 10 GB of drive space:

A container shares the operating system and device drivers of the host. Containers are created from images, and for a container with Tomcat installed, the size is less than 500 MB:

There's an overhead of memory management and device drivers. A VM has all the components...