Book Image

Kubernetes for Serverless Applications

By : Russ McKendrick

Book Image

Kubernetes for Serverless Applications

By: Russ McKendrick

Overview of this book

Kubernetes has established itself as the standard platform for container management, orchestration, and deployment. It has been adopted by companies such as Google, its original developers, and Microsoft as an integral part of their public cloud platforms, so that you can develop for Kubernetes and not worry about being locked into a single vendor. This book will initially start by introducing serverless functions. Then you will configure tools such as Minikube to run Kubernetes. Once you are up-and-running, you will install and configure Kubeless, your first step towards running Function as a Service (FaaS) on Kubernetes. Then you will gradually move towards running Fission, a framework used for managing serverless functions on Kubernetes environments. Towards the end of the book, you will also work with Kubernetes functions on public and private clouds. By the end of this book, we will have mastered using Function as a Service on Kubernetes environments.

Preface

Who this book is for

What this book covers

To get the most out of this book

Free Chapter

The Serverless Landscape

The Serverless Landscape

Serverless and Functions as a Service

Public cloud offerings

The serverless toolkit

Problems solved by serverless and Functions as a Service

An Introduction to Kubernetes

An Introduction to Kubernetes

A brief history of Kubernetes

An overview of Kubernetes

Kubernetes use cases

Installing Kubernetes Locally

Installing Kubernetes Locally

Installing Minikube

Minikube commands

Introducing Kubeless Functioning

Introducing Kubeless Functioning

Installing Kubeless

Kubeless overview

Twitter example

The Kubeless serverless plugin

Using Funktion for Serverless Applications

Using Funktion for Serverless Applications

Introducing Funktion

Installing and configuring Funktion

Deploying a simple function

Twitter streams

Installing Kubernetes in the Cloud

Installing Kubernetes in the Cloud

Launching Kubernetes in DigitalOcean

Launching Kubernetes in AWS

Launching Kubernetes in Microsoft Azure

Launching Kubernetes on the Google Cloud Platform

Apache OpenWhisk and Kubernetes

Apache OpenWhisk and Kubernetes

Apache OpenWhisk overview

Running Apache OpenWhisk locally

Running Apache OpenWhisk on Kubernetes

Launching Applications Using Fission

Launching Applications Using Fission

Fission overview

Installing the prerequisites

Running Fission locally

Fission commands

Running Fission in the cloud

Some more examples

Looking at OpenFaaS

Looking at OpenFaaS

An introduction to OpenFaaS

Running OpenFaaS locally

Serverless Considerations

Serverless Considerations

Security best practices

Monitoring Kubernetes

Running Serverless Workloads

Running Serverless Workloads

Evolving software and platforms

Why Functions as a Service on Kubernetes

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Apache OpenWhisk overview

Apache OpenWhisk is an open source, serverless cloud computing platform, designed to work in a similar way to all the tools we have been covering in other chapters of this book. Apache OpenWhisk started off life as, and continues to be, Functions as a Service part of IBM's public cloud offering, Bluemix.

It had its general availability release in December 2016. The press release that accompanied the announcement had a quote from Luis Enriquez who is the Head of Platform Engineering and Architecture at Santander Group, one of the customers who had been using IBM Cloud Functions while it was in closed beta, Luis said:

“Microservices and containers are changing the way we build apps, but because of serverless, we can take that transformation even further, OpenWhisk provides the instant infrastructure we need for intense tasks and unexpected...