Java Mission Control 7 running on Java 11 cannot connect to Wildfly with "jmx:remoting-jmx" protocol

Question

As far as I can tell, I am having the same issue described here: https://developer.jboss.org/thread/278895

(That forum is closed and no additional comments are allowed, their recommendation is to post to SO)

I am trying to run JMC 7.1.2 on OpenJDK 64-Bit Server VM Corretto-11.0.8.10.1 (build 11.0.8+10-LTS, mixed mode) on my workstation and connect to a remote Wildfly server using the "jmx:remoting-jmx" protocol. This worked for years, but AFAICT does not work in the constellation Java-11 and JMC7.

There is no error about unknown protocol or similar (Yes, I have already read and followed instructions in: Connect Java Mission Control to Wildfly 16), but I get this error when connecting:

org.openjdk.jmc.rjmx.ConnectionException caused by javax.security.sasl.SaslException: org/ietf/jgss/GSSManager [Caused by java.lang.NoClassDefFoundError: org/ietf/jgss/GSSManager]
    at org.openjdk.jmc.rjmx.internal.RJMXConnection.connect(RJMXConnection.java:441)
    at org.openjdk.jmc.rjmx.internal.ServerHandle.doConnect(ServerHandle.java:116)
    at org.openjdk.jmc.rjmx.internal.ServerHandle.connect(ServerHandle.java:106)
    at org.openjdk.jmc.console.ui.editor.internal.ConsoleEditor$ConnectJob.run(ConsoleEditor.java:99)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: javax.security.sasl.SaslException: org/ietf/jgss/GSSManager [Caused by java.lang.NoClassDefFoundError: org/ietf/jgss/GSSManager]
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:426)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:242)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
    at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)
    at ...asynchronous invocation...(Unknown Source)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:599)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:561)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:549)
    at org.jboss.remotingjmx.RemotingConnector.internalRemotingConnect(RemotingConnector.java:268)
    at org.jboss.remotingjmx.RemotingConnector.internalConnect(RemotingConnector.java:156)
    at org.jboss.remotingjmx.RemotingConnector.connect(RemotingConnector.java:103)
    at org.openjdk.jmc.rjmx.internal.RJMXConnection.connectJmxConnector(RJMXConnection.java:487)
    at org.openjdk.jmc.rjmx.internal.RJMXConnection.establishConnection(RJMXConnection.java:464)
    at org.openjdk.jmc.rjmx.internal.RJMXConnection.connect(RJMXConnection.java:434)
    ... 4 more
Caused by: java.lang.NoClassDefFoundError: org/ietf/jgss/GSSManager
    at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
    at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3137)
    at java.base/java.lang.Class.getConstructor0(Class.java:3342)
    at java.base/java.lang.Class.getConstructor(Class.java:2151)
    at java.base/java.security.Provider.newInstanceUtil(Provider.java:153)
    at java.base/java.security.Provider$Service.newInstance(Provider.java:1891)
    at org.wildfly.security.WildFlyElytronBaseProvider$ProviderService.newInstance(WildFlyElytronBaseProvider.java:218)
    at org.wildfly.security.sasl.util.SecurityProviderSaslClientFactory.createSaslClient(SecurityProviderSaslClientFactory.java:94)
    at org.wildfly.security.sasl.util.AbstractDelegatingSaslClientFactory.createSaslClient(AbstractDelegatingSaslClientFactory.java:66)
    at org.wildfly.security.sasl.util.ProtocolSaslClientFactory.createSaslClient(ProtocolSaslClientFactory.java:50)
    at org.wildfly.security.sasl.util.AbstractDelegatingSaslClientFactory.createSaslClient(AbstractDelegatingSaslClientFactory.java:66)
    at org.wildfly.security.sasl.util.ServerNameSaslClientFactory.createSaslClient(ServerNameSaslClientFactory.java:50)
    at org.wildfly.security.sasl.util.AbstractDelegatingSaslClientFactory.createSaslClient(AbstractDelegatingSaslClientFactory.java:66)
    at org.wildfly.security.sasl.util.ServerNameSaslClientFactory.createSaslClient(ServerNameSaslClientFactory.java:50)
    at org.wildfly.security.sasl.util.FilterMechanismSaslClientFactory.createSaslClient(FilterMechanismSaslClientFactory.java:102)
    at org.wildfly.security.sasl.util.AbstractDelegatingSaslClientFactory.createSaslClient(AbstractDelegatingSaslClientFactory.java:66)
    at org.wildfly.security.sasl.util.LocalPrincipalSaslClientFactory.createSaslClient(LocalPrincipalSaslClientFactory.java:76)
    at org.wildfly.security.sasl.util.PrivilegedSaslClientFactory.lambda$createSaslClient$0(PrivilegedSaslClientFactory.java:64)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at org.wildfly.security.sasl.util.PrivilegedSaslClientFactory.createSaslClient(PrivilegedSaslClientFactory.java:64)
    at org.wildfly.security.auth.client.AuthenticationConfiguration.createSaslClient(AuthenticationConfiguration.java:1496)
    at org.wildfly.security.auth.client.AuthenticationContextConfigurationClient.createSaslClient(AuthenticationContextConfigurationClient.java:408)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:420)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:242)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
    at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
    at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)

If I use OpenJDK 8 with JMC 7 then it works (that is, I can connect and also read jfr files created with jdk11) but is that really the only way to get this configuration to work?

Answer 1

I got the same error and found a solution by putting together the following pieces. From the Oracle documentation:

JDK Mission Control (JMC) 8.0 and 8.0.1 starts with Oracle JDK 8 (64-bit), and from JMC 8.1.0 onwards it requires Oracle JDK 11 and later. However, JMC 8 supports Java Management Console (JMX) monitoring and Java Flight Recorder (JFR) profiling of JVMs (JDK 7u40 and later) on any supported platform.

https://www.oracle.com/java/technologies/javase/jmc8-install.html

For a working configuration, we will need JDK 8. And because we will be running JDK 8, we will need an old version of the JDK mission control.

Thus, we will avoid NoClassDefFoundError: org/ietf/jgss/GSSManager, because JDK 8 puts the class on the classpath by default.

Step 1: Grab JDK 8

Download and install JDK 8 on your machine. I got it working with Eclipse Temurin.

Step 2: Download Java Mission Control 8.0.0

We need to find a distributor of the Java Mission Control. I went with Eclipse Mission Control. Find older releases, which still work with Java 8, on the following channels:

• https://github.com/adoptium/jmc-build/releases/tag/8.0.0
• https://adoptium.net/de/jmc/

Step 3: Configure Java Mission Control

We need to instruct JMC to use the Java 8, and add the additional JAR from Wildfly.

Locate jmc.ini, and put the following lines in:

The -vm parameter, followed by newline, followed by the path of the JDK you just downloaded:

-vm
/path/to/your/Java/JavaVirtualMachines/temurin-1.8.0_362/Contents/Home/bin

Second, a VM option to include the Wildfly JAR:

-Xbootclasspath/a:/path/to/your/wildfly-18.0.1.Final/bin/client/jboss-client.jar

Change the path names to match your local configuration, and insert the -vm parameter above -vmargs!

The following config file shows a full example of jmc.ini:

-startup
../Eclipse/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar
--launcher.library
../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.1300.v20200819-0940
--launcher.appendVmargs
-ws
cocoa
-vm
/path/to/your/Java/JavaVirtualMachines/temurin-1.8.0_362/Contents/Home/bin
-vmargs
-XX:+IgnoreUnrecognizedVMOptions
-XX:+UnlockDiagnosticVMOptions
-XX:+DebugNonSafepoints
-XX:FlightRecorderOptions=stackdepth=128
-XX:+FlightRecorder
-XX:StartFlightRecording=name=JMC_Default,maxsize=100m
-Djava.net.preferIPv4Stack=true
-Djdk.attach.allowAttachSelf=true
--add-exports=java.xml/com.sun.org.apache.xerces.internal.parsers=ALL-UNNAMED
--add-exports=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED
--add-exports=java.management/sun.management=ALL-UNNAMED
--add-exports=java.management/sun.management.counter.perf=ALL-UNNAMED
--add-exports=jdk.management.agent/jdk.internal.agent=ALL-UNNAMED
--add-exports=jdk.attach/sun.tools.attach=ALL-UNNAMED
--add-opens=java.base/java.net=ALL-UNNAMED
--add-opens=jdk.attach/sun.tools.attach=ALL-UNNAMED
-Dsun.java.command=JMC
--add-exports=java.desktop/sun.lwawt.macosx=ALL-UNNAMED
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts
-Xbootclasspath/a:/path/to/your/wildfly-18.0.1.Final/bin/client/jboss-client.jar

Connect

Now we should be able to connect using a URL like service:jmx:http-remoting-jmx://localhost:9990, and with the credentials of a Wildfly management user.