Sonarqube Sonar 4.2:logback.xml不存在

我将Sonar升级到了4.2，但它并没有从以下错误开始。我不确定logback.xml到底是什么。据我所知，这是一种日志配置，它取代了sonar.properties中类似的配置，但这是肯定的。我在任何地方都找不到logback.xml示例

# more sonar.log 
--> 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.

Java HotSpot(TM) Server VM warning: You have loaded library /opt/sonar/bin/linux-x86-32/lib/libwrapper.so which might have disabled stack guard. The VM will try to fix the stack g
uard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
2014.03.13 16:48:29 INFO  [o.s.a.Connectors]  HTTP connector is enabled on port 9000
2014.03.13 16:48:30 INFO  [o.a.c.h.Http11Protocol]  Initializing ProtocolHandler ["http-bio-0.0.0.0-9000"]
2014.03.13 16:48:30 INFO  [o.a.c.c.StandardService]  Starting service Tomcat
2014.03.13 16:48:30 INFO  [o.a.c.c.StandardEngine]  Starting Servlet Engine: Apache Tomcat/7.0.42
2014.03.13 16:48:30 INFO  [o.a.c.s.ContextConfig]  No global web.xml found
2014.03.13 16:48:30 ERROR [o.s.s.p.PlatformLifecycleListener]  Fail to start server
java.lang.IllegalArgumentException: Fail to load the Logback configuration: /opt/sonar/conf/logback.xml
    at org.sonar.core.config.Logback.configure(Logback.java:59) ~[sonar-core-4.0.jar:na]
    at org.sonar.server.platform.PlatformLifecycleListener.configureLogback(PlatformLifecycleListener.java:64) ~[PlatformLifecycleListener.class:na]
    at org.sonar.server.platform.PlatformLifecycleListener.contextInitialized(PlatformLifecycleListener.java:34) ~[PlatformLifecycleListener.class:na]
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_51]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_51]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_51]
    at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]
Caused by: java.io.FileNotFoundException: File '/opt/sonar/conf/logback.xml' does not exist
    at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:299) ~[commons-io-2.4.jar:2.4]
    at org.sonar.core.config.Logback.configure(Logback.java:56) ~[sonar-core-4.0.jar:na]
    ... 11 common frames omitted
<-- 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.

Java HotSpot(TM) Server VM warning: You have loaded library /opt/sonar/bin/linux-x86-32/lib/libwrapper.so which might have disabled stack guard. The VM will try to fix the stack g
uard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
2014.04.21 12:36:41 INFO  [o.s.a.Connectors]  HTTP connector is enabled on port 9000
2014.04.21 12:36:41 INFO  [o.a.c.h.Http11Protocol]  Initializing ProtocolHandler ["http-bio-0.0.0.0-9000"]
2014.04.21 12:36:41 INFO  [o.a.c.c.StandardService]  Starting service Tomcat
2014.04.21 12:36:41 INFO  [o.a.c.c.StandardEngine]  Starting Servlet Engine: Apache Tomcat/7.0.42
2014.04.21 12:36:42 INFO  [o.a.c.s.ContextConfig]  No global web.xml found
2014.04.21 12:36:48 ERROR [o.s.s.p.PlatformLifecycleListener]  Fail to start server
java.lang.IllegalArgumentException: Fail to load the Logback configuration: /opt/sonar/conf/logback.xml
    at org.sonar.core.config.Logback.configure(Logback.java:59) ~[sonar-core-4.0.jar:na]
    at org.sonar.server.platform.PlatformLifecycleListener.configureLogback(PlatformLifecycleListener.java:64) ~[PlatformLifecycleListener.class:na]
    at org.sonar.server.platform.PlatformLifecycleListener.contextInitialized(PlatformLifecycleListener.java:34) ~[PlatformLifecycleListener.class:na]
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549) [tomcat-embed-core-7.0.42.jar:7.0.42]
    at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_55]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_55]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_55]
    at java.lang.Thread.run(Thread.java:745) [na:1.7.0_55]
Caused by: java.io.FileNotFoundException: File '/opt/sonar/conf/logback.xml' does not exist
    at org.apache.commons.io.FileUtils.openInputStream(FileUtils.java:299) ~[commons-io-2.4.jar:2.4]
    at org.sonar.core.config.Logback.configure(Logback.java:56) ~[sonar-core-4.0.jar:na]
    ... 11 common frames omitted
<-- Wrapper Stopped

#更多sonar.log
-->包装器作为守护进程启动
正在启动JVM。。。
包装器（版本3.2.3）http://wrapper.tanukisoftware.org
1999-2006塔努基软件有限公司版权所有。保留所有权利。
Java HotSpot（TM）服务器VM警告：您已加载library/opt/sonar/bin/linux-x86-32/lib/libwrapper.so，这可能已禁用堆栈保护。VM将尝试修复堆栈g
现在是保镖。
强烈建议您使用“execstack-c”修复库，或使用“-z noexecstack”链接库。
2014.03.13 16:48:29信息[o.s.a.Connectors]端口9000上已启用HTTP连接器
2014.03.13 16:48:30信息[o.a.c.h.Http11Protocol]正在初始化ProtocolHandler[“http-bio-0.0.0-9000”]
2014.03.13 16:48:30信息[o.a.c.c.StandardService]启动Tomcat服务
2014.03.13 16:48:30信息[o.a.c.c.StandardEngine]启动Servlet引擎：Apache Tomcat/7.0.42
2014.03.13 16:48:30信息[o.a.c.s.ContextConfig]未找到全局web.xml
2014.03.13 16:48:30错误[o.s.s.p.PlatformLifecycleListener]无法启动服务器
java.lang.IllegalArgumentException:无法加载Logback配置：/opt/sonar/conf/Logback.xml
在org.sonar.core.config.Logback.configure（Logback.java:59）~[sonar-core-4.0.jar:na]
在org.sonar.server.PlatformLifecycleListener.configureLogback（PlatformLifecycleListener.java:64）~[PlatformLifecycleListener.class:na]
在org.sonar.server.PlatformLifecycleListener.contextInitialized（PlatformLifecycleListener.java:34）~[PlatformLifecycleListener.class:na]
在org.apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4939）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.core.StandardContext.startInternal（StandardContext.java:5434）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.core.ContainerBase$StartChild.call（ContainerBase.java:1559）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.core.ContainerBase$StartChild.call（ContainerBase.java:1549）[tomcat-embed-core-7.0.42.jar:7.0.42]
在java.util.concurrent.FutureTask.run（FutureTask.java:262）[na:1.7.051]
位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145）[na:1.7.051]
在java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:615）[na:1.7.051]
在java.lang.Thread.run（Thread.java:744）[na:1.7.0_51]
原因：java.io.FileNotFoundException:文件“/opt/sonar/conf/logback.xml”不存在
在org.apache.commons.io.FileUtils.openInputStream（FileUtils.java:299）~[commons-io-2.4.jar:2.4]
在org.sonar.core.config.Logback.configure（Logback.java:56）~[sonar-core-4.0.jar:na]
... 省略了11个公共框架
包装器作为守护进程启动
正在启动JVM。。。
包装器（版本3.2.3）http://wrapper.tanukisoftware.org
1999-2006塔努基软件有限公司版权所有。保留所有权利。
Java HotSpot（TM）服务器VM警告：您已加载library/opt/sonar/bin/linux-x86-32/lib/libwrapper.so，这可能已禁用堆栈保护。VM将尝试修复堆栈g
现在是保镖。
强烈建议您使用“execstack-c”修复库，或使用“-z noexecstack”链接库。
2014.04.21 12:36:41信息[o.s.a.Connectors]端口9000上已启用HTTP连接器
2014.04.21 12:36:41信息[o.a.c.h.Http11Protocol]正在初始化ProtocolHandler[“http-bio-0.0.0-9000”]
2014.04.21 12:36:41信息[o.a.c.c.StandardService]启动Tomcat服务
2014.04.21 12:36:41信息[o.a.c.c.StandardEngine]启动Servlet引擎：Apache Tomcat/7.0.42
2014.04.21 12:36:42信息[o.a.c.s.ContextConfig]未找到global web.xml
2014.04.21 12:36:48错误[o.s.s.p.PlatformLifecycleListener]无法启动服务器
java.lang.IllegalArgumentException:无法加载Logback配置：/opt/sonar/conf/Logback.xml
在org.sonar.core.config.Logback.configure（Logback.java:59）~[sonar-core-4.0.jar:na]
在org.sonar.server.PlatformLifecycleListener.configureLogback（PlatformLifecycleListener.java:64）~[PlatformLifecycleListener.class:na]
在org.sonar.server.PlatformLifecycleListener.contextInitialized（PlatformLifecycleListener.java:34）~[PlatformLifecycleListener.class:na]
在org.apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4939）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.core.StandardContext.startInternal（StandardContext.java:5434）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.util.LifecycleBase.start（LifecycleBase.java:150）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.core.ContainerBase$StartChild.call（ContainerBase.java:1559）[tomcat-embed-core-7.0.42.jar:7.0.42]
在org.apache.catalina.core.ContainerBase$StartChild.call（ContainerBase.java:1549）[tomcat-embed-core-7.0.42.jar:7.0.42]
在java.util.concurrent.FutureTask.run（FutureTask.java:262）[na:1.7.055]
位于java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145）[na:1.7.055]
在java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:615）[na:1.7.055]
在java.lang.Thread.run（Thread.java:745）[na:1.7.0_55]
原因：java.io.FileNotFoundException:文件“/opt/sonar/conf/logback.xml”不存在
在org.apache.commons.io.FileUtils.openInputStream（FileUtils.java:299）~[commons-io-2.4.jar:2.4]
在org.sonar.core.config.Logback.configure（Logback.java:56）~[sonar-core-4.0.jar:na]
... 省略了11个公共框架
Stacktrace显示4.0版仍在使用（搜索“sonar-core-4.0.jar”）。v的分布