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 Linkerd add-on and running a sample application

In this section, you will enable the Linkerd add-on in your MicroK8s Kubernetes cluster. Then, to demonstrate Linkerd’s capabilities, you will deploy a sample application.

Note

I’ll be using an Ubuntu virtual machine for this section. The instructions for setting up a MicroK8s cluster are the same as those in Chapter 5, Creating and Implementing Updates on Multi-Node Raspberry Pi Kubernetes Clusters.

Step 1 – Enabling the Linkerd add-on

Use the following command to enable the Cilium add-on:

microk8s enable linkerd 

The following output indicates that the Linkerd add-on has been enabled:

Figure 12.3 – Enabling the Linkerd add-on

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

Figure 12.4 – Linkerd enabled successfully

Before we move on to the...