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

Creating a role

Once all cookbooks have been uploaded successfully, we need to create a role. A role is defined for a specific function and provides a path for different patterns and workflow processes.

For example, the web server role can consist of Tomcat server recipes and any custom attributes:

  1. Go to Policy| Roles | Create to create a role. In the Create Role window, provide a Name and Description and then click on Next, as shown in the following screenshot:

  2. A Run List keeps roles/recipes in a proper manner and order. We can say that it describes the specifications of a node. Select tomcat from the Available Recipes section, drag it to the Current Run List section, and click on Create Role:

  3. Verify the newly added role details in the hosted Chef dashboard:

  4. Now, we are ready to associate the role while converging the node. Add the role to the node with knife node run_list add tomcatserver"role[v-tomcat]":

    [root@devops1 chef-repo]# knife node run_list add tomcatserver"role[v-tomcat]"...