Book Image

Getting Started with Containerization

By : Dr. Gabriel N. Schenker, Hideto Saito, Hui-Chuan Chloe Lee, Ke-Jou Carol Hsu
Book Image

Getting Started with Containerization

By: Dr. Gabriel N. Schenker, Hideto Saito, Hui-Chuan Chloe Lee, Ke-Jou Carol Hsu

Overview of this book

Kubernetes is an open source orchestration platform for managing containers in a cluster environment. This Learning Path introduces you to the world of containerization, in addition to providing you with an overview of Docker fundamentals. As you progress, you will be able to understand how Kubernetes works with containers. Starting with creating Kubernetes clusters and running applications with proper authentication and authorization, you'll learn how to create high-availability Kubernetes clusters on Amazon Web Services (AWS), and also learn how to use kubeconfig to manage different clusters. Whether it is learning about Docker containers and Docker Compose, or building a continuous delivery pipeline for your application, this Learning Path will equip you with all the right tools and techniques to get started with containerization. By the end of this Learning Path, you will have gained hands-on experience of working with Docker containers and orchestrators, including SwarmKit and Kubernetes. This Learning Path includes content from the following Packt products: • Kubernetes Cookbook - Second Edition by Hideto Saito, Hui-Chuan Chloe Lee, and Ke-Jou Carol Hsu • Learn Docker - Fundamentals of Docker 18.x by Gabriel N. Schenker
Table of Contents (25 chapters)
Title Page
Copyright
About Packt
Contributors
Preface
Index

Setting up the Kubernetes cluster on Linux via kubeadm


In this recipe, we are going to show how to create a Kubernetes cluster along with kubeadm (https://github.com/kubernetes/kubeadm) on Linux servers. Kubeadm is a command-line tool that simplifies the procedure of creating and managing a Kubernetes cluster. Kubeadm leverages the fast deployment feature of Docker, running the system services of the Kubernetes master and the etcd server as containers. When triggered by the kubeadm command, the container services will contact kubelet on the Kubernetes node directly; kubeadm also checks whether every component is healthy. Through the kubeadm setup steps, you can avoid having a bunch of installation and configuration commands when you build everything from scratch.

Getting ready

We will provide instructions of two types of OS:

  • Ubuntu Xenial 16.04 (LTS)
  • CentOS 7.4

Make sure the OS version is matched before continuing. Furthermore, the software dependency and network settings should be also verified...