Not Seeing TraceID, Span ID with Spring Cloud Starter Sleuth - spring-cloud

Question

I am trying my first project with Spring Cloud Starter Sleuth on SpringBoot2 and am running into an issue. Let me share my app's configuration first:
POM.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.RC2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-sleuth</artifactId>
</dependency>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
...
Application.yml
spring:
application:
name: MyApp
logging:
level:
org:
springframework:
cloud:
sleuth: DEBUG
I start my application but I dont see any spanIds or Trace ids on hitting my services.
This is how the log looks:
...
2018-05-29 15:06:39.727 INFO [MyApp,,,] 13916 --- [nio-8081-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 22 ms
2018-05-29 15:06:39.727 INFO [MyApp,,,] 13916 ---
What am I doing wrong here in my app configuration?

Answer 1

Why do you think that anything is wrong? Have you logged anything after getting a request? I think we write about this in the Readme of the project that if you just start the app nothing will happen. try logging sth in the controller and send a request to see ids in the logs