check_jmx Decimal Places

[ckiernan]

I've been using check_jmx to monitor Kafka successfully but just noticed that it only returns whole numbers. This just became a problem for me. We have some metrics that are typically between 0 and 1 (e.g. .80172). I'd like to be able to graph these decimals. I've searched and can't find any topic on this.

Thanks,

Chris

[mcapra]

This would likely involve some modifications to how jmxquery.jar works. Can you share the current check you're using executed from the CLI as well as its output?

[ckiernan]

./check_jmx -U service:jmx:rmi:///jndi/rmi://<ip>:9999/jmxrmi -O kafka.server:type=KafkaRequestHandlerPool,name=RequestHandlerAvgIdlePercent -A MeanRate -vvvv -w 50 -c 100
JMX OK MeanRate=0 | MeanRate=0

The actual value when viewed through jconsole at the same time is 0.97801

[mcapra]

Try replacing your jmxquery.jar and check_jmx with this updated one:
https://github.com/WillPlatnick/jmxquery/

It's receiving the checkData as an Object rather than a long, which I think should fix the problem. It also uses the compare function when assessing thresholds, which I think should resolve doubles (-w 0.5 -c 0.9) correctly.

Let us know if that doesn't work.

[ckiernan]

This worked great with one exception. For some reason the Heap Memory performance graph stopped updating. I don't care about decimals there so I switched that one back to the old check_jmx. The rest of my 45 JMX checks are working fine.

Thanks for your help.

Chris

[cdienger]

Thanks for the update. Are we good to lock this one up then or did you have any additional questions?

[ckiernan]

I'm good. Please close.