我正在尝试在Linux服务器上安装和运行Sonarqube。这是环境：
我按照本网站建议的指南：Site
安装期间似乎没有问题，但我一直未能连接到http://my-ip-address:9000。所以这次我在/opt/sonarqube/logs/sonar.log检查了日志，并收到以下消息。
2017.06.22 09:19:10 WARN web[o.s.p.ProcessEntryPoint] Fail to start web
1838 java.lang.IllegalStateException: Webapp did not start
1839 at org.sonar.server.app.EmbeddedTomcat.isUp(EmbeddedTomcat.java:84) ~[sonar-server-5.6.6.jar:na]
1840 at org.sonar.server.app.WebServer.isUp(WebServer.java:47) [sonar-server-5.6.6.jar:na]
1841 at org.sonar.process.ProcessEntryPoint.launch(ProcessEntryPoint.java:105) ~[sonar-process-5.6.6.jar:na]
1842 at org.sonar.server.app.WebServer.main(WebServer.java:68) [sonar-server-5.6.6.jar:na]
1843 2017.06.22 09:19:10 INFO web[o.a.c.h.Http11NioProtocol] Pausing ProtocolHandler ["http-nio-0.0.0.0-9000"]
1844 2017.06.22 09:19:11 INFO web[o.a.c.h.Http11NioProtocol] Stopping ProtocolHandler ["http-nio-0.0.0.0-9000"]
1845 2017.06.22 09:19:11 INFO web[o.a.c.h.Http11NioProtocol] Destroying ProtocolHandler ["http-nio-0.0.0.0-9000"]
1846 2017.06.22 09:19:11 INFO web[o.s.s.a.TomcatAccessLog] Web server is stopped
1847 2017.06.22 09:19:11 INFO app[o.s.p.m.Monitor] Process[es] is stopping
1848 2017.06.22 09:19:11 INFO es[o.s.p.StopWatcher] Stopping process
1849 2017.06.22 09:19:11 INFO es[o.elasticsearch.node] [sonar-1498090742117] stopping ...
1850 2017.06.22 09:19:11 INFO es[o.elasticsearch.node] [sonar-1498090742117] stopped
1851 2017.06.22 09:19:11 INFO es[o.elasticsearch.node] [sonar-1498090742117] closing ...
1852 2017.06.22 09:19:11 INFO es[o.elasticsearch.node] [sonar-1498090742117] closed
1853 2017.06.22 09:19:12 INFO app[o.s.p.m.Monitor] Process[es] is stopped
1854 <-- Wrapper Stopped
这个问题有什么好的解决方案吗？