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

Implementing Service Mesh for Cross-Cutting Concerns

In the previous chapter, we looked at OpenEBS cloud-native storage solutions so that we can provide persistent storage for our container applications. We also looked at how Container Attached Storage (CAS) is swiftly gaining acceptance as a viable solution for managing stateful workloads and utilizing persistent, fault-tolerant stateful applications. MicroK8s comes with built-in support for OpenEBS, making it the ideal option for running Kubernetes clusters in air-gapped Edge/IoT environments. Using the OpenEBS storage engine, we configured and implemented a PostgreSQL stateful workload. We also went over some best practices to keep in mind when creating a persistent volume and while selecting OpenEBS data engines.

The emergence of cloud-native applications is linked to the rise of the service mesh. In the cloud-native world, an application could be made up of hundreds of services, each of which could have thousands of instances...