[jboss-jira] [JBoss JIRA] (WFCORE-5053) Prometheus JMX exporter jar, stops starting the wildfly server.

[James Perkins (Jira)]

    [ https://issues.redhat.com/browse/WFCORE-5053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14300683#comment-14300683 ] 

James Perkins commented on WFCORE-5053:
---------------------------------------

[~rakesh.shah1977] Currently there is no way to get a patch for it. For WildFly there is only community support so any patching would need to be done on your own :)

Also since this was considered a feature as it changed behavior it will not be in JBoss EAP until 7.4.

> Prometheus JMX exporter jar, stops starting the wildfly server. 
> ----------------------------------------------------------------
>
>                 Key: WFCORE-5053
>                 URL: https://issues.redhat.com/browse/WFCORE-5053
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Logging
>            Reporter: Rakesh Kumar Shah
>            Assignee: James Perkins
>            Priority: Major
>             Fix For: 13.0.0.Beta1
>
>
> 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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