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

Kubernetes storage best practices

For modern containerized applications deployed on Kubernetes, storage is a crucial concern. Kubernetes has progressed from local node filesystems mounted in containers to NFS, and finally to native storage, as described by the CSI specification, which allows for data durability and sharing. In this section, we’ll look at some of the best practices to take into consideration when configuring a PV:

  • Avoid statically creating and allocating PVs to decrease management costs and facilitate scaling. Use dynamic provisioning instead. Define an appropriate reclaim policy in your storage class to reduce storage costs when pods are deleted.
  • Each node can only support a certain number of sizes, so different node sizes provide varying amounts of local storage and capacity. To install the optimum node sizes, plan accordingly for your application’s demands.
  • The life cycle of a PV is independent of any individual container in the cluster...