Introduction to Spring Cloud Kubernetes
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This document is an introduction to Spring Cloud Kubernetes presented by Alexandre Roman on July 4th, 2019. It discusses how Spring Cloud Kubernetes allows writing portable applications using the same source code for different environments with seamless integration to Kubernetes. Key features covered include native service discovery leveraging Kubernetes DNS and events, pod health indicators, Kubernetes-aware profiles, and support for ConfigMaps and Secrets. The presentation includes a demo and questions.
Introduction to Spring Cloud Kubernetes
- 1. © Copyright 2019 Pivotal Software, Inc. All rights Reserved. Introduction to Spring Cloud Kubernetes Alexandre Roman Platform Architect @Alexandre_Roman July 4th, 2019
- 2. ➔ Alexandre Roman Platform Architect, Pivotal (Paris) aroman@pivotal.io github.com/alexandreroman @Alexandre_Roman About me
- 3. Why Spring Cloud Kubernetes? Write portable apps using Spring Cloud ➔ Same source code for different environments ➔ No matter which environment you use, Spring Cloud provides the right platform abstraction ➔ Seamless integration between Kubernetes and Spring ➔ Spring Cloud Kubernetes is GA since February 2019
- 4. Spring Cloud nicely fits with Kubernetes Native service discovery ➔ Leverage Spring Cloud Netflix, without using an Eureka instance ➔ DiscoveryClient uses Kubernetes DNS resolver and cluster events ➔ Use @LoadBalanced and @LoadBalancerClient for client-side load balancing across running pods ➔ Spring Cloud Circuitbreaker support (Hystrix and Resilience4j) Pod health indicator ➔ Pod health indicator contributes to Health actuator: /actuator/health Kubernetes awareness ➔ When your app is running in Kubernetes, profile kubernetes is automatically enabled for custom configuration ConfigMap/Secret support ➔ Hot reload your app when you update your configuration ➔ Inject external configuration properties using ConfigMap ➔ Map Spring config support with ConfigMap: @Values, @ConfigurationProperties ➔ Load Secret values into your beans
- 5. Demo time!
- 6. Cover w/ Image Get the source code! /alexandreroman/hello-spring-k8s frontend backend backend backend ConfigMap
- 7. Q+A
- 8. Thank you for attending this session Let’s keep in touch! github.com/alexandreroman @Alexandre_Roman Want more? Prometheus and Micrometer github.com/alexandreroman/k8s-prometheus-micrometer-demo Spring Boot Helm Starter github.com/alexandreroman/spring-boot-helm-starter Build Docker images with no Dockerfile github.com/alexandreroman/k8s-with-no-dockerfile-no-yaml-files
- 9. Transforming how the world builds software © Copyright 2019 Pivotal Software, Inc. All rights Reserved.