[jboss-jira] [JBoss JIRA] (WFLY-13667) Prometheus JMX exporter jar, stops starting the wildfly server.

[James Perkins (Jira)]

    [ https://issues.redhat.com/browse/WFLY-13667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14243166#comment-14243166 ] 

James Perkins commented on WFLY-13667:
--------------------------------------

Well that's because I had it wrong so no wonder it worked :) Sorry about that. I'm not really too sure what is going on here. This works on Linux so I'm not sure why it's not working on Windows. I'll have to see if I can debug it on my Windows VM to see what's happening.

> Prometheus JMX exporter jar, stops starting the wildfly server. 
> ----------------------------------------------------------------
>
>                 Key: WFLY-13667
>                 URL: https://issues.redhat.com/browse/WFLY-13667
>             Project: WildFly
>          Issue Type: Bug
>          Components: Logging
>    Affects Versions: 20.0.1.Final
>            Reporter: Rakesh Kumar Shah
>            Assignee: James Perkins
>            Priority: Major
>
> Trying to integrate the Prometheus JMX exporter with wildfly.  After spending lot of time and work around it, wildfly is not starting.  It throws following exception. 
> {code}
> java.lang.ClassNotFoundException: org.jboss.logmanager.LogManager
>  at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
>  at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
>  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
>  at java.logging/java.util.logging.LogManager$1.run(LogManager.java:239)
>  at java.logging/java.util.logging.LogManager$1.run(LogManager.java:223)
>  at java.base/java.security.AccessController.doPrivileged(Native Method)
>  at java.logging/java.util.logging.LogManager.<clinit>(LogManager.java:223)
>  at java.logging/java.util.logging.Logger.demandLogger(Logger.java:648)
>  at java.logging/java.util.logging.Logger.getLogger(Logger.java:717)
>  at java.logging/java.util.logging.Logger.getLogger(Logger.java:701)
>  at io.prometheus.jmx.shaded.io.prometheus.jmx.JmxCollector.<clinit>(JmxCollector.java:39)
>  at io.prometheus.jmx.shaded.io.prometheus.jmx.JavaAgent.premain(JavaAgent.java:29)
>  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>  at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>  at java.base/java.lang.reflect.Method.invoke(Method.java:566)
>  at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:513)
>  at java.instrument/sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:525)
> WARNING: Failed to load the specified log manager class org.jboss.logmanager.LogManager
> Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/logmanager/Level
>  at java.base/java.lang.Class.forName0(Native Method)
>  at java.base/java.lang.Class.forName(Class.java:398)
>  at org.jboss.modules.Module.run(Module.java:340)
>  at org.jboss.modules.Module.run(Module.java:320)
>  at org.jboss.modules.Main.main(Main.java:617)
> Caused by: java.lang.ClassNotFoundException: org.jboss.logmanager.Level
>  at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
>  at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
>  at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
>  at org.jboss.modules.JDKSpecific.getSystemClass(JDKSpecific.java:183)
>  at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:395)
>  at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
> {code}



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