为什么 zipkin 中没有显示服务？

Question

• 我用的是Spring boot：1.5.16
• 春云：Edgware.RELEASE
• Java：1.8

我的采样器看起来像这样：

 @Bean
    public Sampler sampler(){
        return new AlwaysSampler();
 }

在 Eureka 中，一切似乎都很好：

但我的问题是在 Zipkin 中我根本看不到服务。

我发现只有调试日志，我没有错误：

2018-09-18 05:15:53.831 DEBUG [reservation-client,,,] 3759 --- [io-9999-exec-10] o.s.c.sleuth.instrument.web.TraceFilter  : Received a request to uri [/reservations] that should not be sampled [false]
2018-09-18 05:15:53.832 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.sleuth.instrument.web.TraceFilter  : No parent span present - creating a new span
2018-09-18 05:15:53.832 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.web.TraceHandlerInterceptor    : Handling span [Trace: 950c6b586ebb2d56, Span: 950c6b586ebb2d56, Parent: null, exportable:true]
2018-09-18 05:15:53.832 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.web.TraceHandlerInterceptor    : Adding a method tag with value [writeReservation] to a span [Trace: 950c6b586ebb2d56, Span: 950c6b586ebb2d56, Parent: null, exportable:true]
2018-09-18 05:15:53.832 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.web.TraceHandlerInterceptor    : Adding a class tag with value [ReservationApiGatewayRestController] to a span [Trace: 950c6b586ebb2d56, Span: 950c6b586ebb2d56, Parent: null, exportable:true]
2018-09-18 05:15:53.833  INFO [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] .e.r.ReservationApiGatewayRestController : VQ start sending!!!
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Processing message before sending it to the channel
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Parent span is [Trace: 950c6b586ebb2d56, Span: 950c6b586ebb2d56, Parent: null, exportable:true]
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Name of the span will be [message:output]
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,74b3c2b9366ff711,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Marking span with client send
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,74b3c2b9366ff711,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Completed sending and current span is [Trace: 950c6b586ebb2d56, Span: 74b3c2b9366ff711, Parent: 950c6b586ebb2d56, exportable:true]
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,74b3c2b9366ff711,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Marking span with client received
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,74b3c2b9366ff711,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Closing messaging span [Trace: 950c6b586ebb2d56, Span: 74b3c2b9366ff711, Parent: 950c6b586ebb2d56, exportable:true]
2018-09-18 05:15:53.833 DEBUG [reservation-client,950c6b586ebb2d56,74b3c2b9366ff711,true] 3759 --- [io-9999-exec-10] o.s.c.s.zipkin2.DefaultEndpointLocator   : Span will contain serviceName [reservation-client]
2018-09-18 05:15:53.834 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.i.m.TraceChannelInterceptor      : Messaging span [Trace: 950c6b586ebb2d56, Span: 74b3c2b9366ff711, Parent: 950c6b586ebb2d56, exportable:true] successfully closed
2018-09-18 05:15:53.834 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.sleuth.instrument.web.TraceFilter  : Closing the span [Trace: 950c6b586ebb2d56, Span: 950c6b586ebb2d56, Parent: null, exportable:true] since the response was successful
2018-09-18 05:15:53.834 DEBUG [reservation-client,950c6b586ebb2d56,950c6b586ebb2d56,true] 3759 --- [io-9999-exec-10] o.s.c.s.zipkin2.DefaultEndpointLocator   : Span will contain serviceName 

问题很简单。为什么我在 Zipkin 中看不到任何内容？ 此示例由Josh Long. 编写

Answer 1

检查您的配置文件并确保在此处正确给出了 baseUrl

    spring.zipkin.baseUrl