JMX scrape failed

[David Paz]

Hello all,

i have read a couple of threads here in group but i can not find them usefull for me. Could pls some one help me to understand at least how to troubleshoot my issue.

I am getting constantly, when scrapping metrics, the exception listed below:

The exporter configuration i am using is the same as in here: https://grafana.com/grafana/dashboards/8563, plus host:port configuration. I get metrics exported but the exception comes and in metrics i can see always an error indication:

# HELP jmx_scrape_error Non-zero if this scrape failed.

# TYPE jmx_scrape_error gauge

jmx_scrape_error 1.0

I am learning now and tryig to get a PoC done. Thats why i try to keep it simple for now. I am using the exporter as agent in server with a Tomcat.

Any idea on how to solve or troubleshoot will be welcome,

thanks in advance

David

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17-Nov-2021 09:38:57.346 SEVERE [prometheus-http-1-2] io.prometheus.jmx.shaded.io.prometheus.jmx.JmxCollector.collect JMX scrape failed: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.NoInitialContextException: Cannot instantiate class: org.apache.naming.java.javaURLContextFactory [Root exception is java.lang.ClassNotFoundException: org.apache.naming.java.javaURLContextFactory]
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:369)
        at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:270)
        at io.prometheus.jmx.shaded.io.prometheus.jmx.JmxScraper.doScrape(JmxScraper.java:95)
        at io.prometheus.jmx.shaded.io.prometheus.jmx.JmxCollector.collect(JmxCollector.java:547)
        at io.prometheus.jmx.shaded.io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.findNextElement(CollectorRegistry.java:207)
        at io.prometheus.jmx.shaded.io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.nextElement(CollectorRegistry.java:240)
        at io.prometheus.jmx.shaded.io.prometheus.client.CollectorRegistry$MetricFamilySamplesEnumeration.nextElement(CollectorRegistry.java:161)
        at io.prometheus.jmx.shaded.io.prometheus.client.exporter.common.TextFormat.write004(TextFormat.java:71)
        at io.prometheus.jmx.shaded.io.prometheus.client.exporter.common.TextFormat.writeFormat(TextFormat.java:53)
        at io.prometheus.jmx.shaded.io.prometheus.client.exporter.HTTPServer$HTTPMetricHandler.handle(HTTPServer.java:83)
        at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79)
        at sun.net.httpserver.AuthFilter.doFilter(AuthFilter.java:83)
        at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:82)
        at sun.net.httpserver.ServerImpl$Exchange$LinkHandler.handle(ServerImpl.java:675)
        at com.sun.net.httpserver.Filter$Chain.doFilter(Filter.java:79)
        at sun.net.httpserver.ServerImpl$Exchange.run(ServerImpl.java:647)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: javax.naming.NoInitialContextException: Cannot instantiate class: org.apache.naming.java.javaURLContextFactory [Root exception is java.lang.ClassNotFoundException: org.apache.naming.java.javaURLContextFactory]
        at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:674)
        at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
        at javax.naming.InitialContext.init(InitialContext.java:244)
        at javax.naming.InitialContext.<init>(InitialContext.java:216)
        at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1953)
        at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1922)
        at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:287)
        ... 18 more
Caused by: java.lang.ClassNotFoundException: org.apache.naming.java.javaURLContextFactory
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:91)
        at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:61)
        at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:672)
        ... 24 more

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