Tips for Spring Cloud Sleuth and Zipkin

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Some tips about integrate spring cloud sleuth and zipkin

Tips for Spring Cloud Sleuth and Zipkin

Versions

  • Spring Cloud: 2.0.1.RELEASE
  • Spring Boot: 2.0.3.RELEASE

Related dependencies

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	<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-zipkin</artifactId>
		</dependency>
	</dependencies>

Problem and Solution

Dependencies config

The artifict spring-cloud-starter-zipkin already contains the “spring-cloud-starter-sleuth” and “spring-cloud-sleuth-zipkin”, so no need config again.

Sleuth log showing false

If the console log show “false” like below, that’s means the spans are not sending from Sleuth to Zipkin.

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INFO [order,3d6babe713158be7,c89d0c6a4d7a71da,false]

It mostly due to “probability” setting for sampler, if debug in local we can set sampler.probality to 1.0 (all traces)

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  sleuth:
    enabled: true
    sampler:
      probability: 1.0

After above configuration, the log should shows “true” like

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2018-10-22 14:50:05.218  INFO [order,3d6babe713158be7,c89d0c6a4d7a71da,true] 27976

Console shows sending to Zipkin, but no trace in Zipkin

May encounter the problem the Sleuth shows sending spans to Zipkin, but we cannot found the trace from Zipkin portal.

Add zipkin.sender.type to web, will solve this problem.

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  zipkin:
    base-url: http://localhost:9411/
    sender:
	  type: web

Offical document about this config:

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If you have web, rabbit, or kafka together on the classpath, you might need to pick the means by which you would like to send spans to zipkin. To do so, set web, rabbit, or kafka to the spring.zipkin.sender.type property. The following example shows setting the sender type for web.