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

The Kubernetes plugin for Jenkins


One way we can use Kubernetes for our CI/CD pipeline is to run our Jenkins build slaves in a containerized environment. Luckily, there is already a plugin, written by Carlos Sanchez, that allows you to run Jenkins slaves in Kubernetes' pods.

Prerequisites

You'll need a Jenkins server handy for this next example. If you don't have one you can use, there is a Docker image available at https://hub.docker.com/_/jenkins/.

Running it from the Docker CLI is as simple as the following command:

docker run --name myjenkins -p 8080:8080 -v /var/jenkins_home jenkins

Installing plugins

Log in to your Jenkins server, and from your home dashboard, click on Manage Jenkins

Note

A note for those installing a new Jenkins server: when you first log in to the Jenkins server, it asks you to install plugins. Choose the default ones, or no plugins will be installed!

Then, on the Manage Jenkins page, select Manage Plugins from the list, as follows:

The main dashboard in Jenkins

The credentials...