In this recipe, we will scale up our service, which we created in the recipe, Using Docker Compose to manage a service. Scaling up a Compose-based service simply means adding more containers for a particular service defined in docker-compose.yml. We will be using Ansible to scale the web service of an application. Before we jump further into this topic and scale a web service, we should understand the concept of load balancers. Usually, web applications that are horizontally scalable like ours (our web service) need a load balancer to distribute requests among all instances of the application. In our example, we have not yet created a load balancer, so we need to create a load balancer using a Docker Hub image.
Ansible 2 Cloud Automation Cookbook
By :
Ansible 2 Cloud Automation Cookbook
By:
Overview of this book
Ansible has a large collection of inbuilt modules to manage various cloud resources. The book begins with the concepts needed to safeguard your credentials and explain how you interact with cloud providers to manage resources. Each chapter begins with an introduction and prerequisites to use the right modules to manage a given cloud provider. Learn about Amazon Web Services, Google Cloud, Microsoft Azure, and other providers. Each chapter shows you how to create basic computing resources, which you can then use to deploy an application. Finally, you will be able to deploy a sample application to demonstrate various usage patterns and utilities of resources.
Table of Contents (11 chapters)
Preface
Free Chapter
Getting Started with Ansible and Cloud Management
Using Ansible to Manage AWS EC2
Managing Amazon Web Services with Ansible
Exploring Google Cloud Platform with Ansible
Building Infrastructure with Microsoft Azure and Ansible
Working with DigitalOcean and Ansible
Running Containers with Docker and Ansible
Diving into OpenStack with Ansible
Ansible Tower
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