Book Image

Mastering Kubernetes - Second Edition

By : Gigi Sayfan
Book Image

Mastering Kubernetes - Second Edition

By: Gigi Sayfan

Overview of this book

Kubernetes is an open source system that is used to automate the deployment, scaling, and management of containerized applications. If you are running more containers or want automated management of your containers, you need Kubernetes at your disposal. To put things into perspective, Mastering Kubernetes walks you through the advanced management of Kubernetes clusters. To start with, you will learn the fundamentals of both Kubernetes architecture and Kubernetes design in detail. You will discover how to run complex stateful microservices on Kubernetes including advanced features such as horizontal pod autoscaling, rolling updates, resource quotas, and persistent storage backend. Using real-world use cases, you will explore the options for network configuration, and understand how to set up, operate, and troubleshoot various Kubernetes networking plugins. In addition to this, you will get to grips with custom resource development and utilization in automation and maintenance workflows. To scale up your knowledge of Kubernetes, you will encounter some additional concepts based on the Kubernetes 1.10 release, such as Promethus, Role-based access control, API aggregation, and more. By the end of this book, you’ll know everything you need to graduate from intermediate to advanced level of understanding Kubernetes.
Table of Contents (16 chapters)

Installing Heapster

Heapster components may or may not be installed in your Kubernetes cluster. If Heapster is not installed, you can install it with a few simple commands. First, let's clone the Heapster repo:

> git clone
> cd heapster 

In earlier versions of Kubernetes, Heapster exposed the services as NodePort by default. Now, they are exposed by default as ClusterIP, which means that they are available only inside the cluster. To make them available locally, I added type: NodePort to the spec of each service in deploy/kube-config/influxdb. For example, for deploy/kube-config/influxdb/influxdb.yaml:

> git diff deploy/kube-config/influxdb/influxdb.yaml
diff --git a/deploy/kube-config/influxdb/influxdb.yaml b/deploy/kube-config/influxdb/influxdb.yaml
index 29408b81..70f52d2c 100644
--- a/deploy/kube-config/influxdb/influxdb...