Microservices with Istio, JHipster and Kubernetes

ITKonekt Zagreb 2019

Transcript

1. Microservices with Istio, JHipster and Kubernetes Zagreb | April 14, 2019 Deepu K Sasidharan @deepu105 | deepu.js.org
2. https://jhipster.tech #ItKonekt19 @java_hipster About me Deepu K Sasidharan JHipster co-lead developer Principal developer @ XebiaLabs OSS aficionado, author, speaker @deepu105 deepu.js.org
3. https://jhipster.tech #ItKonekt19 @java_hipster XebiaLabs dev test uat prod [Cloud] Orchestration Stack Middleware NoSQL PaaS Containers OS OS OS IaaS Network Servers DB / Storage Security SOFTWARE DEFINED DATA CENTER / CLOUD RELEASE ORCHESTRATION Backlog Management Provisioning/ Configuration Security ITSM / Service Management CMDB plan Project Management Issue Tracking ALM DEPLOYMENT AUTOMATION code SCM Code Analysis build Continuous Integration Centralized Repository test Test Tooling Test Visualization release ChatOps / Collaboration Email/ phone/ Excel operate BI / Monitoring Logging DEVOPS INTELLIGENCE
4. https://jhipster.tech #ItKonekt19 @java_hipster What about you? How many of you are Java developers? How many are web developers? How many of you are doing microservices? Are you a fan of Kubernetes? Have you tried Istio? Have you tried Linkerd?
5. https://jhipster.tech #ItKonekt19 @java_hipster About JHipster Most popular Rapid Application Development platform for Java web applications and microservices ▪ 13k+ stars on GitHub ▪ 1.8M+ installations & 20k+ app generations per month ▪ 250k+ overall users ▪ 490+ contributors & 28 core team members ▪ 280+ companies using JHipster ▪ 70+ plugins
6. https://jhipster.tech #ItKonekt19 @java_hipster What can you do with JHipster?
7. https://jhipster.tech #ItKonekt19 @java_hipster • World peace! • Fix your plumbing • Order Pizza for you
8. https://jhipster.tech #ItKonekt19 @java_hipster What can you do with JHipster? ▪ Generate simple monolith web applications ▪ Generate complete microservice architectures ▪ Generate domain model (entities) ▪ Generate CI/CD pipelines ▪ Deploy to AWS, GCP, Azure, Heroku, Cloud Foundry ▪ Deploy to Docker, Kubernetes, Openshift, Rancher
9. https://jhipster.tech #ItKonekt19 @java_hipster Scaffolding! Isn’t that just some boilerplate code?
10. https://jhipster.tech #ItKonekt19 @java_hipster Scaffolding! Isn’t that just some boilerplate code?
11. https://jhipster.tech #ItKonekt19 @java_hipster Microservices with Netflix OSS Stack
12. https://jhipster.tech #ItKonekt19 @java_hipster Microservice with JHipster Registry
13. https://jhipster.tech #ItKonekt19 @java_hipster Netflix OSS Eureka Service registry for service discovery and mid-tier load balancing. Ribbon Load balancing, fault tolerance, caching & batching. Hystrix Circuit breaking and fault tolerance Zuul Edge service(Routing, Load balancing, monitoring, security and more)
14. https://jhipster.tech #ItKonekt19 @java_hipster JHipster Registry Eureka server Provides service discovery Spring cloud config server Provides runtime configurations Administration server Monitoring, logs, configurations and dashboards Spring Boot Provides the application runtime
15. https://jhipster.tech #ItKonekt19 @java_hipster Microservices with Istio service mesh
16. https://jhipster.tech #ItKonekt19 @java_hipster What does Istio do? • Service discovery  • Automatic load balancing  • Routing, circuit breaking, retries, fail-overs, fault injection • Policy enforcement for access control, rate limiting, A/B testing, traffic splits, and quotas • Metrics, logs, and traces  • Secure service-to-service communication
17. https://jhipster.tech #ItKonekt19 @java_hipster Istio architecture
18. https://jhipster.tech #ItKonekt19 @java_hipster Microservice with Istio on Kubernetes
19. https://jhipster.tech #ItKonekt19 @java_hipster Prerequisite - Cluster (GKE) Create GCP Project : $ gcloud projects create jhipster-demo - Enable billing and Kubernetes Engine API $ gcloud config set project jhipster-demo Create GKE Cluster : $ gcloud container clusters create hello-hipster \ --cluster-version 1.11 \ --num-nodes 4 \ --machine-type n1-standard-2 Set Credentials: $ gcloud container clusters get-credentials hello-hipster
20. https://jhipster.tech #ItKonekt19 @java_hipster GKE Cluster
21. https://jhipster.tech #ItKonekt19 @java_hipster Prerequisite - Istio Install Istio : $ cd ~/ $ export ISTIO_VERSION=1.1.0 $ curl -L https://git.io/getLatestIstio | sh - $ ln -sf istio-$ISTIO_VERSION istio $ export PATH=~/istio/bin:$PATH Install Istio in GKE cluster : $ kubectl apply -f ~/istio/install/kubernetes/helm/istio/templates/crds.yaml $ kubectl apply -f ~/istio/install/kubernetes/istio-demo.yaml \ --as=admin --as-group=system:masters Get Ingress Gateway IP: $ kubectl get svc istio-ingressgateway -n istio-system
22. https://jhipster.tech #ItKonekt19 @java_hipster Istio pods
23. https://jhipster.tech #ItKonekt19 @java_hipster JDL Application
24. https://jhipster.tech #ItKonekt19 @java_hipster JDL Entity & Relationship
25. https://jhipster.tech #ItKonekt19 @java_hipster JDL Deployment for Kubernetes with Istio
26. https://jhipster.tech #ItKonekt19 @java_hipster JDL JHipster Domain Language JDL : http://bit.ly/istio-jdl Reference : https://www.jhipster.tech/jdl/ Studio : https://start.jhipster.tech/jdl-studio/
27. https://jhipster.tech #ItKonekt19 @java_hipster JHipster magic $ jhipster import-jdl app.jdl
28. https://jhipster.tech #ItKonekt19 @java_hipster Deploy to GKE $ cd kubernetes $ ./kubectl-apply.sh $ watch kubectl get pods -n jhipster
29. https://jhipster.tech #ItKonekt19 @java_hipster Exploring the app Application Gateway: $ export INGRESS_IP=$(kubectl -n istio-system get svc istio-ingressgateway \ -o jsonpath='{.status.loadBalancer.ingress[0].ip}') $ google-chrome store.$INGRESS_IP.nip.io
30. https://jhipster.tech #ItKonekt19 @java_hipster Gateway
31. https://jhipster.tech #ItKonekt19 @java_hipster Monitoring & logs Grafana - Monitoring dashboard: $ kubectl -n istio-system port-forward $(kubectl -n istio-system get pod \ -l app=grafana -o jsonpath='{.items[0].metadata.name}') 3000:3000 $ google-chrome http://localhost:3000 Prometheus - Log metrics: $ kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l \ app=prometheus -o jsonpath='{.items[0].metadata.name}') 9090:9090 $ google-chrome http://localhost:9090
32. https://jhipster.tech #ItKonekt19 @java_hipster Grafana dashboard
33. https://jhipster.tech #ItKonekt19 @java_hipster Prometheus dashboard
34. https://jhipster.tech #ItKonekt19 @java_hipster Observability Jaeger - Distributed tracing: $ kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l \ app=jaeger -o jsonpath='{.items[0].metadata.name}') 16686:16686 $ google-chrome http://localhost:16686 Service graph: $ kubectl -n istio-system port-forward $(kubectl -n istio-system get pod -l \ app=servicegraph -o jsonpath='{.items[0].metadata.name}') 8088:8088 $ google-chrome http://localhost:8088/force/forcegraph.html
35. https://jhipster.tech #ItKonekt19 @java_hipster Jaeger tracing
36. https://jhipster.tech #ItKonekt19 @java_hipster Service graph
37. https://jhipster.tech #ItKonekt19 @java_hipster Is it worth the hype? + Kubernetes Native microservices + Reduced responsibilities for dev(Service discovery, security, tracing, etc) + No need to write/maintain any code for some of the complex parts of a microservice architecture. + A/B testing, canary releases, and lot more - New compared to other stable options - Higher resource usage (CPU, Memory) - Higher running costs - Business logic related policies might be trickier
38. https://jhipster.tech #ItKonekt19 @java_hipster Other Microservices architecture options
39. https://jhipster.tech #ItKonekt19 @java_hipster Microservice with Consul
40. https://jhipster.tech #ItKonekt19 @java_hipster Microservice with Consul & Traefik
41. https://jhipster.tech #ItKonekt19 @java_hipster What’s coming? JHipster 6 and beyond!
42. https://jhipster.tech #ItKonekt19 @java_hipster JHipster 6 and beyond • Angular reactive forms • VueJS blueprint • HTML5 mode for routing • Spring Boot 2.1 • Java 11 • Kubernetes support improvements • Istio support improvements • Kiali support for Istio • Gradle 5 • JDL improvements
43. https://jhipster.tech #ItKonekt19 @java_hipster Spring Boot 2.x • Migration to Spring Boot 2.1 complete ◦ Another good reason to use JHipster! ◦ JDK 11 support • Work is under way for reactive programming support ◦ Test it by running “jhipster --experimental” ◦ Still work to do on entities and on the client-side
44. https://jhipster.tech #ItKonekt19 @java_hipster Main website https://jhipster.tech JHipster online https://start.jhipster.tech GitHub https://github.com/jhipster/generator-jhipster Twitter https://twitter.com/java_hipster Stack Overflow https://stackoverflow.com/questions/tagged/jhipster?sort=newest More information on JHipster
45. https://jhipster.tech #ItKonekt19 @java_hipster Thank you Do rate the talk if you found it useful!