Cloud Native with Spring Boot and Kubernetes

Principles and patterns for building cloud native application using Spring Boot, containerizing them with Cloud Native Buildpacks, and deploying them on a Kubernetes cluster through a GitOps workflow.

Transcript

1. Thomas Vitale @vitalethomas thomasvitale.com Cloud Native With Spring Boot and Kubernetes Systematic - 10/02/2021 systematic.com
2. Thomas Vitale • Senior Software Engineer at Systematic, Denmark. • Spring, Cloud Native, DevOps, Application Security. • Author of “Cloud Native Spring in Action - With Spring Boot and Kubernetes” (Manning). About Me
3. Why Cloud Native? @SystematicGroup @vitalethomas
4. The Three P’s of Cloud Native Applications Place Private Cloud Public Cloud Hybrid Cloud Properties Scalability Loose Coupling Resilience Manageability Observability Security Practices Automation Continuous Delivery DevOps @SystematicGroup @vitalethomas
5. The Goals Speed Faster and fl exible delivery Cost Ef fi ciency and cost optimisation Scale Elasticity and dynamic scaling Resilience Availability and stability @SystematicGroup @vitalethomas
6. 1. Application Server @SystematicGroup @vitalethomas
7. 2 Embedded server 3 Imperative vs. Reactive @SystematicGroup @vitalethomas 1 “Make JAR, not WAR” (Josh Long)
8. @SystematicGroup @vitalethomas Embedded Server + JAR Packaging Embedded Server Blocking + Servlet API (Tomcat, Undertow, Jetty) Spring Web Embedded Server Non-Blocking + Project Reactor (Netty) Spring WebFlux Serverless Functions (AWS, Azure, GCP, Knative) Spring Cloud Functions
9. Demo Embedded Server + JAR Packaging https://github.com/ThomasVitale/cloud-native-spring-webinar-feb-2021 @SystematicGroup @vitalethomas
10. 2. Containerization @SystematicGroup @vitalethomas
11. 1 Don’t use fat JARs 2 Optimize build/runtime performance 3 Don’t run as root or include secrets @SystematicGroup @vitalethomas
12. Containerize Spring Boot Applications @SystematicGroup @vitalethomas Docker fi les Cloud Native Buildpacks Jib
13. Demo Containerizing Spring Boot https://github.com/ThomasVitale/cloud-native-spring-webinar-feb-2021 @SystematicGroup @vitalethomas
14. 3. Kubernetes Deployment @SystematicGroup @vitalethomas
15. 1 Define a Namespace manifest 2 Define a Deployment manifest 3 Define a Service manifest @SystematicGroup @vitalethomas
16. Demo Kubernetes Deployment https://github.com/ThomasVitale/cloud-native-spring-webinar-feb-2021 @SystematicGroup @vitalethomas
17. 4. Application Lifecycle @SystematicGroup @vitalethomas
18. 1 2 3 Fast start-up, graceful shutdown Liveness and readiness probes Stateless and horizontally scalable @SystematicGroup @vitalethomas
19. Liveness and Readiness Probes Application ALIVE? READY? NO NO Restart might help Restart won’t help @SystematicGroup @vitalethomas
20. Demo Application Lifecycle https://github.com/ThomasVitale/cloud-native-spring-webinar-feb-2021 @SystematicGroup @vitalethomas
21. 5. Configuration @SystematicGroup @vitalethomas
22. Code, Configuration, Credentials Code Con fi guration Deploy Credentials @SystematicGroup @vitalethomas
23. Configuration Strategies Spring Boot Properties Property fi les Command line arguments Environment variables Con fi guration Services Spring Cloud Con fi g Server Spring Cloud Consul Con fi g Spring Cloud Vault Spring Cloud Zookeeper Con fi g Cloud Platform Services Spring Cloud Alibaba Spring Cloud AWS Spring Cloud Azure Spring Cloud GCP Kubernetes Platform Con fi gMaps Secrets Environment Variables @SystematicGroup @vitalethomas
24. Demo Con fi guration https://github.com/ThomasVitale/cloud-native-spring-webinar-feb-2021 @SystematicGroup @vitalethomas
25. Bonus: GitOps @SystematicGroup @vitalethomas
26. GitOps - Cloud Native Operations https://www.weave.works/technologies/gitops/
27. Demo GitOps https://github.com/ThomasVitale/cloud-native-spring-webinar-feb-2021 @SystematicGroup @vitalethomas
28. GitOps - Configuration helm upgrade -i flux fluxcd/flux \ --set git.user=$GITHUB_USER \ --set git.email=$GITHUB_USER@users.noreply.github.com \ --set git.url=git@github.com:$GITHUB_USER/cloud-native-spring- webinar-feb-2021 \ --set git.path="deployment" \ --set git.branch="main" \ --namespace flux @SystematicGroup @vitalethomas
29. What’s next? @SystematicGroup @vitalethomas
30. II. Dependency management I. One codebase, one application III. Con fi guration, credentials, and code V. Design, build, release, run IV. Backing services VI. Stateless processes VIII. Concurrency VII. Port binding IX. Disposability XI. Logs X. Environment parity XII. Administrative processes XIV. Telemetry XIII. API fi rst XV. Authentication and authorization Beyond 12-Factors
31. More Spring and Kubernetes Resilience Resilience4J Spring Cloud Circuit Breaker Distributed systems Spring Cloud Gateway Spring Cloud Stream Spring Security OAuth Reactive Spring WebFlux R2DBC Project Reactor Kubernetes Spring Boot Spring Cloud Kubernetes Skaffold @SystematicGroup @vitalethomas
32. With Spring Boot and Kubernetes • 35% discount code, valid for all products in all format • mtpsystematic21 • mng.bz/8N5D Cloud Native Spring in Action www.thomasvitale.com @vitalethomas
33. Thomas Vitale @vitalethomas thomasvitale.com Cloud Native With Spring Boot and Kubernetes Systematic - 10/02/2021 systematic.com