Book Image

Modern DevOps Practices

By : Gaurav Agarwal
Book Image

Modern DevOps Practices

By: Gaurav Agarwal

Overview of this book

Containers have entirely changed how developers and end-users see applications as a whole. With this book, you'll learn all about containers, their architecture and benefits, and how to implement them within your development lifecycle. You'll discover how you can transition from the traditional world of virtual machines and adopt modern ways of using DevOps to ship a package of software continuously. Starting with a quick refresher on the core concepts of containers, you'll move on to study the architectural concepts to implement modern ways of application development. You'll cover topics around Docker, Kubernetes, Ansible, Terraform, Packer, and other similar tools that will help you to build a base. As you advance, the book covers the core elements of cloud integration (AWS ECS, GKE, and other CaaS services), continuous integration, and continuous delivery (GitHub actions, Jenkins, and Spinnaker) to help you understand the essence of container management and delivery. The later sections of the book will take you through container pipeline security and GitOps (Flux CD and Terraform). By the end of this DevOps book, you'll have learned best practices for automating your development lifecycle and making the most of containers, infrastructure automation, and CaaS, and be ready to develop applications using modern tools and techniques.
Table of Contents (19 chapters)
1
Section 1: Container Fundamentals and Best Practices
7
Section 2: Delivering Containers
15
Section 3: Modern DevOps with GitOps

Summary

We began this chapter by managing Pods with Deployment resources and ReplicaSet resources and discussed some of the critical Kubernetes deployment strategies. We then looked into Kubernetes service discovery and models and understood why we required a separate entity to expose containers to the internal or external world. We then looked at different Service resources and where to use them. We talked about Ingress resources and how to use them to create reverse proxies to our container workloads. We then delved into Horizontal Pod Autoscaling and used multiple metrics to scale our Pods automatically.

We looked at state considerations and learned about static and dynamic storage provisioning using PeristentVolumes, PersistentVolumeClaims, and StorageClass, and talked about some best practices surrounding them. We looked at StatefulSet resources as an essential resource that helps you schedule and manage stateful containers. Finally, we looked at some best practices, tips...