Getting IllegalStateException when loading jar as javaagent about jmx_exporter

[brian-brazil]

I'm not sure what's going on here. Is something else listening on the port already?

[davidnarayan]

I agree -- it's a head scratcher for sure.

Nothing else is listening on the port. I've tried several combinations of the startup parameters:

1. 5127
2. 127.0.0.1:5127
3. 0.0.0.0:5127
4. Different ports as well...

All of them result in the same issue.

I'm guessing that it's environmental but I was hoping that maybe someone else has seen this issue.

[brian-brazil]

Have you tried an strace to see what's going on at the syscall level?

[davidnarayan]

That's a good suggestion. I tried that but it wasn't clear to me what was causing the failure. I've attached the trace and the log.

kafkaServer.txt
strace.txt

[davidnarayan]

So, I was finally able narrow down the issue. I am attempting to use this jar to monitor Apache Kafka. The issue occurs when using the version of Kafka that is built for Scala 2.10. It does not occur when using the version of Kafka that is built for Scala 2.11.

[brian-brazil]

That's odd, the code should be completely isolated from anything like that and only talking over JMX to the rest of the JVM.

[davidnarayan]

The latest version of the JMX exporter (compiled from master) does not exhibit this issue.

[bencoughlan]

The latest version? You mean version 1.0 of the prometheus jmx exporter?