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

Overview of Docker containers

Docker is an open source initiative for OS virtualization that automates the deployment of applications inside software containers. It provides isolated user spaces and hence provides user-based processes, space, and filesystems. Behind the scenes, it shares the Linux host kernel. The following diagram illustrates the working mechanism of a Docker container:

Docker has two main components, with a client-server architecture:

  • The Docker host: The Docker host contains the Docker daemon, containers, and images. The Docker engine is an important component that provides the core Docker technology. This core Docker technology enables images and containers. When we install Docker successfully, we run a simple command. In our case, we will consider CentOS for the container. To run an interactive shell in the CentOS image, use docker run -i -t <image> /bin/bash:

    • The-i flag initiates an interactive container

    • The -t flag creates a pseudo-terminal that attaches stdin...