Eureka & Spring Boot Admin with Spring Boot

Reference

1. Spring Microservices in Action, Manning, 2017 Jun, https://www.manning.com/books/spring-microservices-in-action
2. Microservices monitoring with hystrix, eureka admin and spring boot admin - HowToDoInJava, 2018 Mar 19, https://howtodoinjava.com/spring/spring-cloud/microservices-monitoring/
3. Monitoring Microservices With Spring Boot Admin, Piotr's TechBlog, 2017 Jun 26, https://piotrminkowski.wordpress.com/2017/06/26/monitoring-microservices-with-spring-boot-admin/
4. Spring Boot Admin Reference Guide, Version 1.5.7, 27.01.2018, http://codecentric.github.io/spring-boot-admin/1.5.7/#register-clients-via-spring-boot-admin

Environment

• Maven: 3.5.2
• JDK: 1.8.0_131, vendor: Oracle Corporation
• OS: "windows 10"
• IDE Spring Tool Suite 3.9.4.RELEASE

1. Create the Maven project

https://start.spring.io/

• Maven project with Java and Spring Boot: 1.5.13 (failure to start) 1.5.10
• Group: com.wonderland.api
• Artifact: eureka-service
• Dependencies:
• Actuator #for the metric later
• Web
• Eureka Server
• Spring Boot Admin (Server)
• Eureka Discovery #for Spring Boot Admin auto-discovery from Eureka

Download: eureka-services.zip
Unzip into {project folder}
Import into IDE: File > Import > Existing Maven Projects > {project folder} > Finish

2. Change the Code

2.1. Update class EurekaServicesApplication adding:
@EnableEurekaServer
@EnableAdminServer
@EnableDiscoveryClient

3. Configure the Spring Boot application

3.1. Add bootstrap.yml
spring:
    application:
        name: eureka-service


3.2. Edit application.yml (rename the application.properties into application.yml)
server:
    port: ${PORT:30100}

eureka:
    client:
        registryFetchIntervalSeconds: 5
        register-with-eureka: false # disable self-registration
        serviceUrl:
            defaultZone: ${EUREKA_SERVICE_URL:http://localhost:30100}/eureka/
    instance:
        leaseRenewalIntervalInSeconds: 10

management:
    security:
        enabled: false

spring:
    boot:
        admin:
            context-path: /admin  #config a context path for Spring Boot admin


4. Test the Eureka service
#> {project folder}\mvn spring-boot:run
open Eureka: http://localhost:30100/
open Spring Boot Admin: http://localhost:30100/admin