Kubernetes Application Developer: Develop Microservices and Design a Software Solution on the Cloud

ISBN-13: 9781484280317 / Angielski / Miękka / 2022 / 164 str.

Prateek Khushalani

Opis

Intermediate user level

Spis treści

•Chapter 1, Cloud Computing and Kubernetes

Chapter Goal:

o What is cloud computing

o What is Kubernetes

o Different distributions of Kubernetes

o Setting up a K8S cluster- for workshop purposes

o Common commands of K8S

o Place of Kubernetes from an architecture point of view.

•Chapter 2, Creating Applications on Kubernetes

Chapter Goal:

o Create an Apache http server

o Create a Java Tomcat war-based server

o Create a gRPC API server 

o Create a Rest API server

o Differences when creating applications on Kubernetes.

o How will the application be actually called in a production based cluster.

•Chapter 3, Testing of Applications on Kubernetes

Chapter Goal:

o Creating a CI system for testing.

o Using of Pytest, go test, behave and other best testing tools based on programming language.

o Adding a simple CD system stage.

o Coverage of code and mock of applications to replicate real time scenarios.

•Chapter 4, Security of Applications

Chapter Goal:

o Creating a book inventory application composed of UI, API and DB

o Using cloud services instead of reinventing the wheel

o Using and understand Istio for TLS Encryption and monitoring.

o Understanding authentication/authorization and RBAC systems.

o Leverage all the services available rather than developing things to secure all microservices.

•Chapter 5, Networking of Applications

Chapter Goal:

o Understanding the basics of networking in Kubernetes.

o How containers/pod reach each other via overlay networking.

o Different ways networking is configured in Kubernetes cluster.

o Using name-based DNS routing in applications rather than IP’s

o Understanding load balancers and the features provided by it.

o Using Istio to create a service mesh of microservices and see the flow of traffic between them.

o Configuring Kubernetes objects such as Ingress, Service, Endpoints.

•Chapter 6, Scaling of Software Solution

Chapter Goal:

o Identify which microservice of the solution is becoming a bottleneck

o Creating HPA rules in Kubernetes to scale specific microservice.

o Use case and real-world problems and solutions to them via scaling. 

•Chapter 7, Building a SaaS Solution

Chapter Goal:

o Start with nothing but a simple k8s cluster.

o Create microservice with your own hands one by one.

o Identify what all services are required for building a sample SaaS e commerce solution.

o Creating/Configuring a UI, API, DB, business logic, monitoring software stack.

o Architecting the entire solution.

o Bring the stack up and testing it against load and autoscaling the solution to support any number of requests.

O autorze

Prateek Khushalani is a Cloud Architect at Google and works as a full stack developer in developing cloud based accelerators. Prior to Google, he worked as software developer at IBM and worked as an individual contributor on the development of SDN networking of the IBM public cloud. He has worked across industries such as software, retail, and R&D prototypes, with a focus on cloud computing and machine learning. At Google, he contributes to the development of tools which help accelerate customer's migration journey to Google Cloud Platform. Prateek has strong expertise in developing and designing IaaS, PaaS, and SaaS solutions for both public and private clouds. He holds a bachelor's degree from Birla Institute of Technology, Mesra. He is an open-source contributor and is an active writer on tech blogs.

Blurb

Write efficient, smart, and optimized code for containerized applications on public and private clouds at a generic level. This book shows you how to set up microservices that are robust, scalable, and capable of running on GKE (Google Kubernetes Service), AKS (Azure Kubernetes Service), ECS (Elastic Container Service), or even on a vanilla K8S cluster. 

The book covers the nuts and bolts of container orchestration engines (COEs) and explains how to install and configure them. It also covers creation and deployment of a sample application on COEs. You will learn how to integrate different applications such as OAuth and how to test them and secure them using Istio Citadel. You also will be taught how to create HPA rules for microservices and scale only those microservices that require it, making your stack intelligent. In the concluding chapter, the book explains how to build a SaaS solution from scratch, running on the cloud with automated deployments accessed publicly via a secured ingress K8S controller.

By the end of the book, you will have a good understanding of developing microservices and how to design and create a software solution on the cloud.

What You Will Learn

• Build software on Kubernetes in the most optimized way
• Interact with Kubernetes using client SDKs in Python, Go, nodejs, etc.
• Create a testing and deployment CI/CD system for software stacks
• Secure your application using Istio, without writing code
• Access microservices using ingress controllers and scale them using HPA rules