localhost:18080/hello시 404 에러

management.endpoints.web.exposure.include=*

spring.boot.admin.client.url=http://localhost:8080

server.port=18080

클라이언트 properties에 다음과같이 설정하고 

localhost:18080/hello로 접근하면 

Whitelabel Error Page

404에러가 뜨는데 뭐가 잘못된걸까요..? 

아래는 client에서의 java소스입니다.

package me.izac.springbootactuatordemo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;

@SpringBootApplication
public class Application {

    @GetMapping("/hello")
    public String hello() {
        return "hello";
    }

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}