Book Image

Kubernetes in Production Best Practices

By : Aly Saleh, Murat Karslioglu
Book Image

Kubernetes in Production Best Practices

By: Aly Saleh, Murat Karslioglu

Overview of this book

Although out-of-the-box solutions can help you to get a cluster up and running quickly, running a Kubernetes cluster that is optimized for production workloads is a challenge, especially for users with basic or intermediate knowledge. With detailed coverage of cloud industry standards and best practices for achieving scalability, availability, operational excellence, and cost optimization, this Kubernetes book is a blueprint for managing applications and services in production. You'll discover the most common way to deploy and operate Kubernetes clusters, which is to use a public cloud-managed service from AWS, Azure, or Google Cloud Platform (GCP). This book explores Amazon Elastic Kubernetes Service (Amazon EKS), the AWS-managed version of Kubernetes, for working through practical exercises. As you get to grips with implementation details specific to AWS and EKS, you'll understand the design concepts, implementation best practices, and configuration applicable to other cloud-managed services. Throughout the book, you’ll also discover standard and cloud-agnostic tools, such as Terraform and Ansible, for provisioning and configuring infrastructure. By the end of this book, you’ll be able to leverage Kubernetes to operate and manage your production environments confidently.
Table of Contents (12 chapters)

Configuring the clusters

Now we put the solution we designed in the previous section into action. We will start by developing the Ansible framework skeleton, which will consist of the following parts:

  • group_vars: This directory contains the manifest configuration files with variables' default unless a cluster defines its own private variables in its own inventory.
  • inventories: This directory contains the configuration files with variables' values, which are specific to each cluster or cluster group, meaning that variables defined here override default variables defined under the groups_vars directory.
  • tasks: In this directory, we define a separate task for each cluster service and add-on that we need to deploy and configure; the task definition file is standard across tasks, as we will use Ansible's k8s module and pass to it the YAML templates to deploy against the target cluster.
  • templates: This directory contains the Kubernetes manifest YAMLs and...