Eureka Server and Spring Boot Admin in one Application - spring-boot

Question

I try to run Eureka Server and Spring Boot Admin Server in one Application (SBA Docu says this is possible). Eureka is working as intended but the Admin App still shows zero Applications.
Spring Boot Version 2.0.3,
Spring Boot Admin Version 2.0.1
Eureka and SBA Server
#SpringBootApplication
#EnableEurekaServer
#EnableDiscoveryClient
#EnableAdminServer
class KotlintestApplication
fun main(args: Array<String>) {
SpringApplication.run(KotlintestApplication::class.java, *args)
}
Server bootstrap.yml
spring:
application:
name: server
Server application.yml
spring:
boot:
admin:
context-path: /admin
eureka:
instance:
leaseRenewalIntervalInSeconds: 10
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://localhost:8080/eureka
Client
#EnableDiscoveryClient
#SpringBootApplication
class KotlintestApplication
fun main(args: Array<String>) {
SpringApplication.run(KotlintestApplication::class.java, *args)
}
#Configuration
class SecurityPermitAllConfig : WebSecurityConfigurerAdapter() {
#Throws(Exception::class)
override fun configure(http: HttpSecurity) {
http.authorizeRequests().anyRequest().permitAll()
.and().csrf().disable()
}
}
Client bootstrap.yml
spring:
application:
name: client
server:
port: 0
Client application.yml
management:
endpoints:
web:
exposure:
include: "*"
endpoint:
health:
show-details: ALWAYS
eureka:
instance:
hostname: localhost
health-check-url-path: /actuator/health
status-page-url-path: /actuator/info
client:
serviceUrl:
defaultZone: http://127.0.0.1:8080/eureka/

Answer 1

Found the answer myself
Remove the fetchRegistry: false from the server application.yaml.
The Server has to fetch the registry to see the clients ...
Btw: You should set an instanceId if you want to run multiple instances with a random port on the same host. Otherwise SBA can't differ between the instances.
eureka:
instance:
instanceId : client-${random.uuid}