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.
Table of Contents (13 chapters)

Deploying a simple function

Now that we have our Funktion deployment up-and-running, we can look at deploying a really simple hello world example. In the /Chapter05/hello-world/src folder in the GitHub repository that supports this book, you will find a file called hello.js. This file contains the following code:

module.exports = function(context, callback) {
var name = || context.request.body || "World";
callback(200, "Hello " + name + "!!");

Running the following command in the /Chapter05/hello-world/ folder will create our first function using the preceding code:

$ funktion create fn -f src/hello.js

The output should look like this:

As you can see from the Terminal output, this has created a function called hello. Now, we have function running the following command:

$ funktion get function

This should return some...