Book Image

IoT Edge Computing with MicroK8s

By : Karthikeyan Shanmugam
Book Image

IoT Edge Computing with MicroK8s

By: Karthikeyan Shanmugam

Overview of this book

Are you facing challenges with developing, deploying, monitoring, clustering, storing, securing, and managing Kubernetes in production environments as you're not familiar with infrastructure technologies? MicroK8s - a zero-ops, lightweight, and CNCF-compliant Kubernetes with a small footprint is the apt solution for you. This book gets you up and running with production-grade, highly available (HA) Kubernetes clusters on MicroK8s using best practices and examples based on IoT and edge computing. Beginning with an introduction to Kubernetes, MicroK8s, and IoT and edge computing architectures, this book shows you how to install, deploy sample apps, and enable add-ons (like DNS and dashboard) on the MicroK8s platform. You’ll work with multi-node Kubernetes clusters on Raspberry Pi and networking plugins (such as Calico and Cilium) and implement service mesh, load balancing with MetalLB and Ingress, and AI/ML workloads on MicroK8s. You’ll also understand how to secure containers, monitor infrastructure and apps with Prometheus, Grafana, and the ELK stack, manage storage replication with OpenEBS, resist component failure using a HA cluster, and more, as well as take a sneak peek into future trends. By the end of this book, you’ll be able to use MicroK8 to build and implement scenarios for IoT and edge computing workloads in a production environment.
Table of Contents (24 chapters)
1
Part 1: Foundations of Kubernetes and MicroK8s
4
Part 2: Kubernetes as the Preferred Platform for IOT and Edge Computing
7
Part 3: Running Applications on MicroK8s
14
Part 4: Deploying and Managing Applications on MicroK8s
21
Frequently Asked Questions About MicroK8s

Enabling the Knative add-on

Since Knative isn’t available for ARM64 architecture, we will be using an Ubuntu virtual machine for this section. The instructions for setting up the MicroK8s cluster are the same as in Chapter 5, Creating and Implementing Updates on Multi-Node Raspberry Pi Kubernetes Clusters.

We’ll enable the Knative add-on that adds Knative middleware to your cluster. Use the following command to enable the Knative add-on:

microk8s enable knative

When you enable this add-on, Istio and DNS will be also added to MicroK8s.

The following command execution output confirms that the Knative add-on is being enabled:

Figure 10.2 – Enabling the Knative add-on

It will take some time to finish activating the add-on. The following command execution output shows that Knative has been successfully enabled:

Figure 10.3 – Knative add-on activated

Before moving on to the next step, let’s...