title: Opentelemetry Java auto-instrumentation data to Jaeger
body: <p>I'm new to the world of Opentelemetry and would like to send the <a href="https://github.com/spring-projects/spring-petclinic" rel="nofollow noreferrer">Spring-petclinic</a> instrumentation data to Jaeger which is running on my remote cloud system</p>
  <p>Here is the bat file:
  <code>java -javaagent:opentelemetry-javaagent-all.jar -Dotel.exporter=jaeger -Dotel.exporter.jaeger.endpoint=50.18.XXX.XX:14250 -Dotel.otlp.span.timeout=4000 -Dotel.jaeger.service.name=otel-ui -jar target/spring-petclinic-2.4.0.BUILD-SNAPSHOT.jar </code></p>
  <p>When I run the bat file, I'm abe to open the petclinic app in browser (http://localhost:8080), I get the following error in the console:
  <code>[opentelemetry.auto.trace 2021-01-06 17:22:21:008 +0530] [grpc-default-executor-1] WARN io.opentelemetry.exporter.otlp.OtlpGrpcSpanExporter - Failed to export spans. Error message: UNAVAILABLE: io exception</code></p>
  <p>How to resolve this issue? Are there any other dependencies to be the added to the petclinic pom.xml or to the code?</p>