Build Serverless Apps on Kubernetes with Knative: Build, deploy, and manage serverless applications on Kubernetes

✍ Scribed by Amit Deshpande, Anuj Gupta, Ashish Saxena

• Publisher: BPB Publications
• Year: 2023
• Tongue: English
• Leaves: 364
• Category: Library

✦ Synopsis

earn how to deploy and maintain high-performing, resilient serverless applications using Knative KEY FEATURES ● Understand the benefits of using Knative as the framework for your serverless applications. ● Stay up-to-date with the latest features and capabilities of Knative. ● Harness Knative's capabilities to build, deploy, and manage serverless containers. DESCRIPTION As cloud computing has become increasingly important in modern development workflows, developers have begun to look for ways to harness its full potential. Serverless architecture is one such approach, and Knative is a powerful and versatile solution for deploying and managing serverless containers. This book is a comprehensive guide to Knative serverless containers. It begins by introducing the core concepts of serverless architecture and its benefits. Then, it provides an in-depth exploration of Knative, its components, and how it fits within the broader Kubernetes ecosystem. The book demonstrates how to build, deploy, and manage serverless containers using Knative through practical examples and case studies. It covers topics such as setting up a development environment, creating custom serverless applications, integrating with other cloud-native tools and services, and best practices for monitoring, logging, and troubleshooting. Toward the end, the book delves into advanced topics such as scaling, performance optimization, and security. By the book's end, you can run serverless applications on Kubernetes using Knative. WHAT YOU WILL LEARN ● Get familiar with the core concepts of serverless architecture, the Knative project, and its components. ● Learn how to set up a development environment for Knative. ● Learn how to build and deploy Knative Functions effortlessly. ● Build enterprise-grade apps using Knative components such as Serving and Eventing. ● Optimize the performance and scalability of your serverless applications. WHO THIS BOOK IS FOR Whether you're a current or aspiring tech/IT professional, a student, or someone who wants to start or advance their career in serverless architecture, this book is for you. TABLE OF CONTENTS 1. Serverless and Knative in a Nutshell 2. Installation and Configuration of Knative – Part I 3. Installation and Configuration – Part II 4. Knative Functions – An Overview 5. Knative Serving 6. Knative Eventing 7. Scaling and Routing 8. Knative Best Practices

✦ Table of Contents

1. Serverless and Knative in a Nutshell
   Introduction
   Structure
   Objectives
   Introduction to Serverless
   Serverless
   How serverless works
   Key advantages of serverless
   Serverless should be considered for
   Key limitations/shortcomings of serverless
   Scenarios not suited for serverless
   Serverless 1.0 - Function-as-a-Service
   Serverless 2.0 - Serverless Containers
   Introduction to Knative
   Knative Serving
   Knative Eventing
   Knative features
   Conclusion
   Multiple choice questions
   Answers
   Key terms
2. Installation and Configuration of Knative – Part I
   Introduction
   Structure
   Objectives
   Kubernetes cluster
   Explore and understand various methods to get Kubernetes cluster
   Install kubectl CLI
   Validation of the Kubernetes cluster
   Kubernetes package manager
   Understanding Helm and its need
   Helm installation
   Verify Helm installation
   Istio
   Why Istio for Knative
   Istio installation
   Verify Istio installation
   Knative installation
   Explore and understand various approaches to installing Knative
   Install Knative
   Install Knative Serving with YAML
   Install Knative Eventing with YAML
   Install Knative CLI
   Validate Knative installation
   Conclusion
   Multiple choice questions
   Answers
   Key terms
3. Installation and Configuration – Part II
   Introduction
   Structure
   Objective
   Broker
   Brokers for Knative and its need
   Installation options for Kafka broker
   Installation and validation of Kafka
   GitOps with Argo CD
   Understanding GitOps and its need
   Installation of Argo CD
   Observability
   Understanding observability and its significance in Knative
   Understanding the Knative observability stack
   Loki
   Installing Loki
   Prometheus
   Installing Prometheus
   Jaeger
   Installing Jaeger
   Grafana
   Conclusion
   Multiple choice questions
   Answers
   Key terms
4. Knative Functions – An Overview
   Introduction
   Structure
   Objectives
   Knative Functions
   Installing Knative functions
   Creating function
   Building function
   Local build
   Remote build
   Conclusion
   Multiple choice questions
   Answers
   Key terms
5. Knative Serving
   Introduction
   Structure
   Objectives
   Knative Serving
   Benefits of Knative Serving
   Case study – Online order processing system
   Functional architecture
   Deployment architecture
   Flow diagram
   Service Implementation
   Order service
   Product service
   Customer service
   Build and deploy
   Order service
   Product and customer service
   Validate services
   Knative Serving – Services runtime behavior
   Conclusion
   Multiple choice questions
   Answers
   Key terms
6. Knative Eventing
   Introduction
   Structure
   Objectives
   Knative Eventing
   Knative Eventing patterns
   Source to Sink pattern
   Broker and Trigger pattern
   Case study – Online order processing system
   Functional architecture
   Deployment architecture
   Order processing system with Source to Sink pattern
   Service implementation
   Build and deploy services
   Event source installation
   Create event sources
   Validate services
   Order processing system with Broker and Triggers Pattern
   Service implementation
   Build and deploy services
   Broker installation
   Create event source
   Create triggers
   Validate services
   Conclusion
   Multiple choice questions
   Answers
   Key terms
7. Scaling and Routing
   Introduction
   Structure
   Objectives
   Deployment of use case on remote Kubernetes cluster
   Autoscaling in Knative
   About Knative Pod autoscaler
   Autoscaling configurations
   Global settings configuration
   Applying global settings – Order processing system
   Per-Revision settings configuration
   Metrics and targets
   Traffic management
   Revisions
   Understanding Revisions with order service
   Traffic splitting and switching
   Deployment strategies
   Blue-green deployment strategy
   Apply blue-green deployment strategy
   Canary deployment strategy
   Apply canary deployment strategy
   A/B testing deployment strategy
   Apply A/B testing deployment strategy
   Conclusion
   Multiple choice questions
   Answers
   Key terms
8. Knative Best Practices
   Introduction
   Structure
   Objectives
   Manage Knative Services deployment
   Manage Service deployment with GitOps powered by Argo CD
   Installation of Argo CD
   Access Argo CD web interface
   Setup Git repository for deployment through Argo CD
   Add Git repository for Argo CD
   Deployment of Services with Argo CD
   Continuous deployment with Argo CD
   Observability for Knative services
   Observability tools - Loki, Prometheus, Jaeger, and Grafana
   Configure Loki for logs
   Access Grafana web interface
   Visualize logs with Grafana
   Integrate Jaeger for distributed tracing
   Set up and configure Prometheus for Metrics Collection
   Configure alerts using Grafana
   Conclusion
   Multiple choice questions
   Answers
   Key terms
   Index