eureka server 直接打包成 war 扔到 tomcat 需要怎么设置?

server:
  port: 8761

spring:
  application:
    name: eureka-server

eureka:
  instance:
    hostname: localhost
    prefer-ip-address: true
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

tomcat 启动后好像也没见报错, 但也没法访问服务