Book Image

Getting Started with Kubernetes - Third Edition

By : Jonathan Baier, Jesse White
Book Image

Getting Started with Kubernetes - Third Edition

By: Jonathan Baier, Jesse White

Overview of this book

Kubernetes has continued to grow and achieve broad adoption across various industries, helping you to orchestrate and automate container deployments on a massive scale. Based on the recent release of Kubernetes 1.12, Getting Started with Kubernetes gives you a complete understanding of how to install a Kubernetes cluster. The book focuses on core Kubernetes constructs, such as pods, services, replica sets, replication controllers, and labels. You will understand cluster-level networking in Kubernetes, and learn to set up external access to applications running in the cluster. As you make your way through the book, you'll understand how to manage deployments and perform updates with minimal downtime. In addition to this, you will explore operational aspects of Kubernetes , such as monitoring and logging, later moving on to advanced concepts such as container security and cluster federation. You'll get to grips with integrating your build pipeline and deployments within a Kubernetes cluster, and be able to understand and interact with open source projects. In the concluding chapters, you'll orchestrate updates behind the scenes, avoid downtime on your cluster, and deal with underlying cloud provider instability within your cluster. By the end of this book, you'll have a complete understanding of the Kubernetes platform and will start deploying applications on it.
Table of Contents (23 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Lessons learned from production


Kubernetes has been around long enough now that there are a number of companies running Kubernetes. In our day jobs, we've seen Kubernetes run in production across a number of different industry verticals and in numerous configurations. Let's explore what folks across the industry are doing when providing customer-facing workloads. At a high level, there are several key areas:

  • Make sure to set limits in your cluster.
  • Use the appropriate workload types for your application.
  • Label everything! Labels are very flexible and can contain a lot of information that can help identify an object, route traffic, or determine placement.
  • Don't use default values.
  • Tweak the default values for the core Kubernetes components.
  • Use load balancers as opposed to exposing services directly on a node's port.
  • Build your Infrastructure as Code and use provisioning tools such as CloudFormation or Terraform, and configuration tools such as Chef, Ansible, or Puppet.
  • Consider not running stateful...