SonarQube: java.lang.IllegalStateException: WebApp startete nicht am ..: Der SonarQube-Server wurde automatisch geschlossen, nachdem ich den Server gestartet habe

Question

Ich habe versucht, SonarQube auf einem entfernten Ubuntu-Rechner zu installieren. Ich habe den Server gestartet und die Statusinformationen waren "SonarQube läuft". Aber nach ein paar Minuten wurde der Server automatisch geschlossen. Ich habe diese Ausnahme:

2016.11.08 16:41:53 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: 
java.lang.Object.wait(Native Method) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) 
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43) 
2016.11.08 16:41:53 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: 
java.lang.Object.wait(Native Method) 
java.util.TimerThread.mainLoop(Timer.java:552) 
java.util.TimerThread.run(Timer.java:505) 
2016.11.08 16:41:53 INFO web[][o.a.c.h.Http11NioProtocol] Starting ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 16:41:53 INFO web[][o.s.s.a.TomcatAccessLog] Web server is started 
2016.11.08 16:41:53 INFO web[][o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000 
2016.11.08 16:41:53 WARN web[][o.s.p.ProcessEntryPoint] Fail to start web 
java.lang.IllegalStateException: Webapp did not start 
     at org.sonar.server.app.EmbeddedTomcat.isUp(EmbeddedTomcat.java:84) ~[sonar-server-6.1.jar:na] 
     at org.sonar.server.app.WebServer.isUp(WebServer.java:46) [sonar-server-6.1.jar:na] 
     at org.sonar.process.ProcessEntryPoint.launch(ProcessEntryPoint.java:105) ~[sonar-process-6.1.jar:na] 
     at org.sonar.server.app.WebServer.main(WebServer.java:67) [sonar-server-6.1.jar:na] 
2016.11.08 16:41:53 INFO web[][o.a.c.h.Http11NioProtocol] Pausing ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 16:41:54 INFO web[][o.a.c.h.Http11NioProtocol] Stopping ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 16:41:54 INFO web[][o.a.c.h.Http11NioProtocol] Destroying ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 16:41:54 INFO web[][o.s.s.a.TomcatAccessLog] Web server is stopped 
2016.11.08 16:41:54 INFO app[][o.s.p.m.Monitor] Process[es] is stopping 
2016.11.08 16:41:55 INFO es[][o.s.p.StopWatcher] Stopping process 
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] stopping ... 
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] stopped 
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] closing ... 
2016.11.08 16:41:55 INFO es[][o.elasticsearch.node] [sonarqube] closed 

Hier sind meine Ausführungen:

• Java: JDK 1.8.0_111
• Ubuntu: Ubuntu 14.04
• MySQL: 5.6.34
• Sonarqube: 6.1

unten ist die vollständige Protokolle

--> Wrapper Started as Daemon 
Launching a JVM... 
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org 
    Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved. 

WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 52.0 

WrapperSimpleApp Usage: 
    java org.tanukisoftware.wrapper.WrapperSimpleApp {app_class} [app_arguments] 

Where: 
    app_class:  The fully qualified class name of the application to run. 
    app_arguments: The arguments that would normally be passed to the 
        application. 
<-- Wrapper Stopped 
--> Wrapper Started as Daemon 
Launching a JVM... 
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org 
    Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved. 

WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 52.0 

WrapperSimpleApp Usage: 
    java org.tanukisoftware.wrapper.WrapperSimpleApp {app_class} [app_arguments] 

Where: 
    app_class:  The fully qualified class name of the application to run. 
    app_arguments: The arguments that would normally be passed to the 
        application. 
<-- Wrapper Stopped 
--> Wrapper Started as Daemon 
Launching a JVM... 
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org 
    Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved. 

WrapperSimpleApp: Unable to locate the class org.sonar.application.App: java.lang.UnsupportedClassVersionError: org/sonar/application/App : Unsupported major.minor version 52.0 
"sonar.log" 21127L, 1883274C                                 1,1   Top 
java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941) 
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066) 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127) 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
java.lang.Thread.run(Thread.java:745) 
2016.11.08 21:14:58 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: 
java.lang.Object.wait(Native Method) 
java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143) 
com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43) 
2016.11.08 21:14:58 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [ROOT] appears to have started a thread named [Timer-0] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread: 
java.lang.Object.wait(Native Method) 
java.util.TimerThread.mainLoop(Timer.java:552) 
java.util.TimerThread.run(Timer.java:505) 
2016.11.08 21:14:58 INFO web[][o.a.c.h.Http11NioProtocol] Starting ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 21:14:58 INFO web[][o.s.s.a.TomcatAccessLog] Web server is started 
2016.11.08 21:14:58 INFO web[][o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000 
2016.11.08 21:14:58 WARN web[][o.s.p.ProcessEntryPoint] Fail to start web 
java.lang.IllegalStateException: Webapp did not start 
     at org.sonar.server.app.EmbeddedTomcat.isUp(EmbeddedTomcat.java:84) ~[sonar-server-6.1.jar:na] 
     at org.sonar.server.app.WebServer.isUp(WebServer.java:46) [sonar-server-6.1.jar:na] 
     at org.sonar.process.ProcessEntryPoint.launch(ProcessEntryPoint.java:105) ~[sonar-process-6.1.jar:na] 
     at org.sonar.server.app.WebServer.main(WebServer.java:67) [sonar-server-6.1.jar:na] 
2016.11.08 21:14:58 INFO web[][o.a.c.h.Http11NioProtocol] Pausing ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 21:14:59 INFO web[][o.a.c.h.Http11NioProtocol] Stopping ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 21:14:59 INFO web[][o.a.c.h.Http11NioProtocol] Destroying ProtocolHandler ["http-nio-127.0.0.1-9000"] 
2016.11.08 21:14:59 INFO web[][o.s.s.a.TomcatAccessLog] Web server is stopped 
2016.11.08 21:14:59 INFO app[][o.s.p.m.Monitor] Process[es] is stopping 
2016.11.08 21:15:00 INFO es[][o.s.p.StopWatcher] Stopping process 
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] stopping ... 
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] stopped 
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] closing ... 
2016.11.08 21:15:00 INFO es[][o.elasticsearch.node] [sonarqube] closed 
2016.11.08 21:15:00 INFO app[][o.s.p.m.Monitor] Process[es] is stopped 

Answer 1

Die berühmte Meldung "Nicht unterstützte Major.Minor Version 52.0" bedeutet, dass Java 8 nicht verwendet wird, während es erforderlich ist. Sie sollten überprüfen, dass sich JDK 1.8.0_111 in PATH befindet. Wenn nicht, ist es eine Alternative, die Eigenschaft wrapper.java.command in conf/wrapper.conf zu bearbeiten.