I'm trying to start SonarQube in my linux machine, but i'm getting this error:
--> 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.
2017.03.28 20:00:24 INFO app[][o.s.a.AppFileSystem] Cleaning or creating temp directory /opt/sonar/temp
2017.03.28 20:00:24 INFO app[][o.s.p.m.JavaProcessLauncher] Launch process[es]: /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -Djava.awt.headless=true -Xmx1G -Xms256m -Xss256k -Djna.nosys=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -Djava.io.tmpdir=/opt/sonar/temp -javaagent:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management-agent.jar -cp ./lib/common/*:./lib/search/* org.sonar.search.SearchServer /opt/sonar/temp/sq-process4414918112205828016properties
2017.03.28 20:00:25 INFO es[][o.s.p.ProcessEntryPoint] Starting es
2017.03.28 20:00:25 INFO es[][o.s.s.EsSettings] Elasticsearch listening on /127.0.0.1:9001
2017.03.28 20:00:26 INFO es[][o.elasticsearch.node] [sonarqube] version[2.3.3], pid[4801], build[218bdf1/2016-05-17T15:40:04Z]
2017.03.28 20:00:26 INFO es[][o.elasticsearch.node] [sonarqube] initializing ...
2017.03.28 20:00:26 INFO es[][o.e.plugins] [sonarqube] modules [], plugins [], sites []
2017.03.28 20:00:26 INFO es[][o.elasticsearch.env] [sonarqube] using [1] data paths, mounts [[/ (/dev/root)]], net usable_space [12.5gb], net total_space [19.4gb], spins? [possibly], types [ext4]
2017.03.28 20:00:26 INFO es[][o.elasticsearch.env] [sonarqube] heap size [1015.6mb], compressed ordinary object pointers [true]
2017.03.28 20:00:30 INFO es[][o.elasticsearch.node] [sonarqube] initialized
2017.03.28 20:00:30 INFO es[][o.elasticsearch.node] [sonarqube] starting ...
2017.03.28 20:00:30 INFO es[][o.e.transport] [sonarqube] publish_address {127.0.0.1:9001}, bound_addresses {127.0.0.1:9001}
2017.03.28 20:00:30 INFO es[][o.e.discovery] [sonarqube] sonarqube/upk_GmJgQPmBqNGykii2jw
2017.03.28 20:00:33 INFO es[][o.e.cluster.service] [sonarqube] new_master {sonarqube}{upk_GmJgQPmBqNGykii2jw}{127.0.0.1}{127.0.0.1:9001}{rack_id=sonarqube, master=true}, reason: zen-disco-join(elected_as_master, [0] joins received)
2017.03.28 20:00:33 INFO es[][o.elasticsearch.node] [sonarqube] started
2017.03.28 20:00:33 INFO es[][o.e.gateway] [sonarqube] recovered [0] indices into cluster_state
2017.03.28 20:00:33 INFO app[][o.s.p.m.Monitor] Process[es] is up
2017.03.28 20:00:33 INFO app[][o.s.p.m.JavaProcessLauncher] Launch process[web]: /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djruby.management.enabled=false -Djruby.compile.invokedynamic=false -Xmx512m -Xms128m -XX:+HeapDumpOnOutOfMemoryError -Djava.io.tmpdir=/opt/sonar/temp -javaagent:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management-agent.jar -cp ./lib/common/*:./lib/server/*:/opt/sonar/lib/jdbc/mysql/mysql-connector-java-5.1.39.jar org.sonar.server.app.WebServer /opt/sonar/temp/sq-process3450868362392661343properties
2017.03.28 20:00:34 INFO web[][o.s.p.ProcessEntryPoint] Starting web
2017.03.28 20:00:35 INFO web[][o.s.s.a.TomcatContexts] Webapp directory: /opt/sonar/web
2017.03.28 20:00:35 INFO web[][o.a.c.h.Http11NioProtocol] Initializing ProtocolHandler ["http-nio-127.0.0.1-9000"]
2017.03.28 20:00:35 INFO web[][o.a.t.u.n.NioSelectorPool] Using a shared selector for servlet write/read
2017.03.28 20:00:36 INFO web[][o.e.plugins] [Eternal Brain] modules [], plugins [], sites []
2017.03.28 20:00:38 INFO web[][o.s.s.e.EsClientProvider] Connected to local Elasticsearch: [127.0.0.1:9001]
2017.03.28 20:00:38 INFO web[][o.s.s.p.LogServerVersion] SonarQube Server / 6.1 / dc148a71a1c184ccad588b66251980c994879dff
2017.03.28 20:00:38 INFO web[][o.sonar.db.Database] Create JDBC data source for jdbc:mysql://localhost:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance
Tue Mar 28 20:00:38 UTC 2017 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Tue Mar 28 20:00:38 UTC 2017 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
2017.03.28 20:00:40 ERROR web[][o.a.c.c.C.[.[.[/sonar]] Exception sending context initialized event to listener instance of class org.sonar.server.platform.web.PlatformServletContextListener
org.sonar.api.utils.MessageException: Database was upgraded to a more recent of SonarQube. Backup must probably be restored or db settings are incorrect.
2017.03.28 20:00:40 ERROR web[][o.a.c.c.StandardContext] One or more listeners failed to start. Full details will be found in the appropriate container log file
2017.03.28 20:00:40 ERROR web[][o.a.c.c.StandardContext] Context [/sonar] startup failed due to previous errors
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][[timer]]] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Thread.sleep(Native Method)
org.elasticsearch.threadpool.ThreadPool$EstimatedTimeThread.run(ThreadPool.java:719)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][scheduler][T#1]] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][transport_client_worker][T#1]{New I/O worker #1}] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
org.jboss.netty.channel.socket.nio.SelectorUtil.select(SelectorUtil.java:68)
org.jboss.netty.channel.socket.nio.AbstractNioSelector.select(AbstractNioSelector.java:434)
org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:212)
org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][transport_client_worker][T#2]{New I/O worker #2}] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
org.jboss.netty.channel.socket.nio.SelectorUtil.select(SelectorUtil.java:68)
org.jboss.netty.channel.socket.nio.AbstractNioSelector.select(AbstractNioSelector.java:434)
org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:212)
org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][transport_client_boss][T#1]{New I/O boss #3}] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93)
sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
org.jboss.netty.channel.socket.nio.SelectorUtil.select(SelectorUtil.java:68)
org.jboss.netty.channel.socket.nio.AbstractNioSelector.select(AbstractNioSelector.java:434)
org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:212)
org.jboss.netty.channel.socket.nio.NioClientBoss.run(NioClientBoss.java:42)
org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][transport_client_timer][T#1]{Hashed wheel timer #1}] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.lang.Thread.sleep(Native Method)
org.jboss.netty.util.HashedWheelTimer$Worker.waitForNextTick(HashedWheelTimer.java:445)
org.jboss.netty.util.HashedWheelTimer$Worker.run(HashedWheelTimer.java:364)
org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
java.lang.Thread.run(Thread.java:745)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] appears to have started a thread named [elasticsearch[Eternal Brain][generic][T#1]] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
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)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] 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)
2017.03.28 20:00:40 WARN web[][o.a.c.l.WebappClassLoaderBase] The web application [sonar] 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)
2017.03.28 20:00:40 INFO web[][o.a.c.h.Http11NioProtocol] Starting ProtocolHandler ["http-nio-127.0.0.1-9000"]
2017.03.28 20:00:40 INFO web[][o.s.s.a.TomcatAccessLog] Web server is started
2017.03.28 20:00:40 INFO web[][o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000
2017.03.28 20:00:40 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]
2017.03.28 20:00:40 INFO web[][o.a.c.h.Http11NioProtocol] Pausing ProtocolHandler ["http-nio-127.0.0.1-9000"]
2017.03.28 20:00:41 INFO web[][o.a.c.h.Http11NioProtocol] Stopping ProtocolHandler ["http-nio-127.0.0.1-9000"]
2017.03.28 20:00:42 INFO web[][o.a.c.h.Http11NioProtocol] Destroying ProtocolHandler ["http-nio-127.0.0.1-9000"]
2017.03.28 20:00:42 INFO web[][o.s.s.a.TomcatAccessLog] Web server is stopped
2017.03.28 20:00:42 INFO app[][o.s.p.m.Monitor] Process[es] is stopping
2017.03.28 20:00:42 INFO es[][o.s.p.StopWatcher] Stopping process
2017.03.28 20:00:42 INFO es[][o.elasticsearch.node] [sonarqube] stopping ...
2017.03.28 20:00:42 INFO es[][o.elasticsearch.node] [sonarqube] stopped
2017.03.28 20:00:42 INFO es[][o.elasticsearch.node] [sonarqube] closing ...
2017.03.28 20:00:42 INFO es[][o.elasticsearch.node] [sonarqube] closed
2017.03.28 20:00:43 INFO app[][o.s.p.m.Monitor] Process[es] is stopped
<-- Wrapper Stopped
the log show me that it's a memory leak, but i don't think that is the error cause.
I was reading in some posts that it's cause because the java isn't reconized.
The error "Database was upgraded to a more recent of SonarQube. Backup must probably be restored or db settings are incorrect." means that the DB schema has already been used by another version of SonarQube (> 6.1 in your case).
You should re-create the schema or install the correct version of SonarQube.