Spring Boot Microservices

Step 1 : Create docker images

mvn clean install dockerfile:build

Step 2 : Use Zuul API gateway, Eureka discovery and Feign client to communicate the services running in docker containers.

docker network create spring-boot-test
docker container run -p 8761:8761 --network=spring-boot-test --name naming-server kmmanu/service-registry:0.0.2-SNAPSHOT
docker container run -p 8765:8765 --network=spring-boot-test --env SPRING_PROFILES_ACTIVE=prod --name api-gateway-server kmmanu/api-gateway:0.0.1-SNAPSHOT
docker container run -p 8081:8081 --network=spring-boot-test --env SPRING_PROFILES_ACTIVE=prod --name greeting-service kmmanu/greeting-service:0.0.2-SNAPSHOT
docker container run -p 8082:8082 --network=spring-boot-test --env SPRING_PROFILES_ACTIVE=prod --name greeting-client  kmmanu/eureka-client:0.0.3-SNAPSHOT

Or use the docker compose :-

docker-compose up
docker-compose up scale greeting-service=2

Step 3 : Route calls via Zuul gateway.

To call the greeting client via gateway :- curl http://localhost:8765/greeting-client/client/greeting

To call the greeting service via gateway :- curl http://localhost:8765/greeting-service/server/greeting

To call the greeting client directly :- curl http://localhost:8082/client/greeting (Not recommended)

To call the greeting server directly :- curl http://localhost:8081/server/greeting (Not recommended)

Eureka console :- http://localhost:8761/ RabbitMQ console :- http://localhost:15672/ Zipkin server console :- http://localhost:9411/zipkin/

Useful commands

docker exec -it <greeting_client_container_id>  ping <greeting-service-ip>
docker exec -it <greeting_client_container_id>  ping greeting-service
docker exec -it greeting-service sh
docker container ls
docker container logs <greeting_client_container_id> -f
docker container inspect <greeting_client_container_id>
docker network inspect <network-name>

Service discovery

Zuul API Gateway