我在 Cloud Foundry 上设置了 Netflix Eureka、Hystrix 和 Turbine，分为两个应用程序：
监控应用程序“mrc-service”包括 Eureka Server、Turbine 和 Hystrix Dashboard。此应用程序的 application.yml 如下所示：
---
spring:
profiles: cloud
eureka:
instance:
nonSecurePort: 80
hostname: ${vcap.application.uris[0]}
leaseRenewalIntervalInSeconds: 10
metadataMap:
instanceId: ${spring.application.name}:${vcap.application.instance_id:${spring.application.instance_id:${random.value}}}
client:
registerWithEureka: true
fetchRegistry: true
service-url:
defaultZone: https://mrc-service.myurl/eureka/
turbine:
aggregator:
clusterConfig: LOG-TEST
appConfig: log-test
名为“log-test”的 Hystrix 流生成应用程序在 Cloud Foundry 上有多个实例。该应用程序是一个 Eureka 客户端，并使用 Spring Actuator 公开一个 Hystrix 流。这里是应用程序的 application.yml：
---
spring:
profiles: cloud
eureka:
instance:
nonSecurePort: 80
hostname: ${vcap.application.uris[0]}
metadataMap:
instanceId: ${spring.application.name}:${vcap.application.instance_id:${spring.application.instance_id:${random.value}}}
secure-port-enabled: true
client:
healthcheck:
enabled: true
service-url:
defaultZone: https://mrc-service.myurl/eureka/
log-test 应用程序的两个实例在 Eureka 服务器上正确注册：
但是当我开始监控涡轮流时，Hystrix 仪表板只显示一个主机（如红色箭头所示）而不是两个：
Turbine 日志正确检索了两个实例，但随后说只有一个主机启动：
2017-08-23T10:12:10.764+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.764 INFO 19 --- [ Timer-0] o.s.c.n.turbine.EurekaInstanceDiscovery : Fetching instances for app: log-test
2017-08-23T10:12:10.764+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.764 INFO 19 --- [ Timer-0] o.s.c.n.turbine.EurekaInstanceDiscovery : Received instance list for app: log-test, size=2
2017-08-23T10:12:10.764+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.763 INFO 19 --- [ Timer-0] o.s.c.n.t.CommonsInstanceDiscovery : Fetching instance list for apps: [log-test]
2017-08-23T10:12:10.764+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.764 INFO 19 --- [ Timer-0] c.n.t.discovery.InstanceObservable : Retrieved hosts from InstanceDiscovery: 2
2017-08-23T10:12:10.765+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.764 INFO 19 --- [ Timer-0] c.n.t.discovery.InstanceObservable : Found hosts that have been previously terminated: 0
2017-08-23T10:12:10.765+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.764 DEBUG 19 --- [ Timer-0] c.n.t.discovery.InstanceObservable : Retrieved hosts from InstanceDiscovery: [StatsInstance [hostname=log-test.myurl:80, cluster: LOG-TEST, isUp: true, attrs={securePort=443, fusedHostPort=log-test.myurl:443, instanceId=log-test:97d83c44-8b9e-44c4-56b4-742cef7bada0, port=80}], StatsInstance [hostname=log-test.myurl:80, cluster: LOG-TEST, isUp: true, attrs={securePort=443, fusedHostPort=log-test.myurl:443, instanceId=log-test:3d8359e4-a5c1-4aa0-5109-5b49a77a1f6f, port=80}]]
2017-08-23T10:12:10.765+02:00 [APP/PROC/WEB/0] [OUT] 2017-08-23 08:12:10.764 INFO 19 --- [ Timer-0] c.n.t.discovery.InstanceObservable : Hosts up:1, hosts down: 0
所以我想知道 Turbine 是否真的聚合了两个实例的 Hystrix 流。Turbine 必须联系实例，例如使用 Cloud Foundry 特定的标头参数，如 X-CF-APP-INSTANCE。不确定这是否已经发生。
所描述的方法在 Cloud Foundry 上是否可行，还是我必须将 Turbine Stream 与 RabbitMQ 一起使用？