Subject: [prometheus-users] Couldn't able to set up the JMX exporter to scrape the JVM metrics.


We are trying to configure the JMX exporter on linux machines to scrape all
the JVM metrics and feed those data to prometheus database and later we
want to visualize those in Grafana, for that we downloaded the jar file
(jmx_prometheus_javaagent-0.12.0.jar) and trying to execute it using the
below command.

"java -javaagent:./jmx_prometheus_javaagent-0.12.0.jar=7201:config.yaml
-jar jmx_prometheus_javaagent-0.12.0.jar"
but we are getting below two errors

ERROR 1 :
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386)
at
sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:401)
Caused by: java.io.FileNotFoundException: config.yaml (No such file or
directory)
at java.io.FileInputStream.open0(Native Method)
at java.io.FileInputStream.open(FileInputStream.java:195)
at java.io.FileInputStream.(FileInputStream.java:138)
at java.io.FileReader.(FileReader.java:72)
at
io.prometheus.jmx.shaded.io.prometheus.jmx.JmxCollector.(JmxCollector.java:74)
at
io.prometheus.jmx.shaded.io.prometheus.jmx.JavaAgent.premain(JavaAgent.java:29)
... 6 more
FATAL ERROR in native method: processing of -javaagent failed

Where is the config.yaml file is located?, How to download the
config.yaml?, What the configurations did config.yaml contains, Please help
in providing these.

Just as a work around we created an empty file with config.yaml in the
current directory and executed the same command "java
-javaagent:./jmx_prometheus_javaagent-0.12.0.jar=7201:config.yaml -jar
jmx_prometheus_javaagent-0.12.0.jar" then we got another error
------------------------------
ERROR 2 :
no main manifest attribute, in jmx_prometheus_javaagent-0.12.0.jar

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