Sonar installed & started but not accessible - sonarqube

Question

Summary:
Installed standalone sonar
Started through /etc/init.d/sonar start
sonar.log doesn't show any error
unable to open http://mymachine.ipaddress:9000/sonar
GET http://mymachine.ipaddress:9000/sonar net::ERR_CONNECTION_TIMED_OUT
I am trying to run a standalone sonar on a remote machine running CentOS 6.5.
Following: http://sonar-pkg.sourceforge.net/ - installed through:
yum install sonar
I've set up a remote database connection to MySQL instance, already set up with the 'sonar' database and user as described in: http://docs.sonarqube.org/display/SONAR/Installing
Modified sonar.properties configuration:
sonar.jdbc.url=jdbc:mysql://<mysql.ipaddress>:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance
Initially - I only changed the jdbc connection, sonar started fine but I am unable to open sonar web http://mymachine.ipaddress:9000/
Based on:
Sonar can be accessed locally but not accessed elsewhere
Unable to open remotely installed sonar on a browser
I updated more properties:
sonar.web.host=<mymachine.ipaddress>
sonar.web.context=/sonar
sonar.web.port=9000
and run sonar again
/etc/init.d/sonar start
Sonar started fine, but still unable to access it through browser.
Going to http://mymachine.ipaddress:9000/sonar gives: "This webpage is not available"
GET http://mymachine.ipaddress:9000/sonar net::ERR_CONNECTION_TIMED_OUT
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.
2014.10.01 14:30:18 INFO app[o.s.p.m.JavaProcessLauncher] Launch process[search]:
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.55.x86_64/jre/bin/java -Xmx256m
-Xms256m -Xss256k -Djava.net.preferIPv4Stack=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -Djava.awt.headless=true -Djava.io.tmpdir=/opt/sonar/temp -cp ./lib/common/:./lib/search/ org.sonar.search.SearchServer
/tmp/sq-process2719628111769939329properties
2014.10.01 14:30:18 WARN sea[o.s.p.ProcessEntryPoint] Starting search
2014.10.01 14:30:18 INFO sea[o.s.s.SearchServer] Starting ES[sonarqube] on port: 9001
2014.10.01 14:30:18 INFO sea[o.elasticsearch.node] [sonar-1412188217506] version[1.1.2], pid[329],
build[e511f7b/2014-05-22T12:27:39Z]
2014.10.01 14:30:18 INFO sea[o.elasticsearch.node] [sonar-1412188217506] initializing ...
2014.10.01 14:30:18 INFO sea[o.e.plugins] [sonar-1412188217506] loaded [], sites []
2014.10.01 14:30:20 INFO sea[o.elasticsearch.node] [sonar-1412188217506] initialized
2014.10.01 14:30:20 INFO sea[o.elasticsearch.node] [sonar-1412188217506] starting ...
2014.10.01 14:30:20 INFO sea[o.e.transport] [sonar-1412188217506] bound_address {inet[/0.0.0.0:9001]}, publish_address
{inet[/:9001]}
2014.10.01 14:30:23 INFO sea[o.e.cluster.service] [sonar-1412188217506] new_master
[sonar-1412188217506][k85f1MFxQgSy_aXegApX1g][CORPSTGCI01][inet[/:9001]]{rack_id=sonar-1412188217506},
reason: zen-disco-join (elected_as_master)
2014.10.01 14:30:23 INFO sea[o.e.discovery] [sonar-1412188217506] sonarqube/k85f1MFxQgSy_aXegApX1g
2014.10.01 14:30:25 INFO sea[o.e.gateway] [sonar-1412188217506] recovered [2] indices into cluster_state
2014.10.01 14:30:25 INFO sea[o.elasticsearch.node] [sonar-1412188217506] started
2014.10.01 14:30:31 INFO app[o.s.p.m.Monitor] Process[search] is up
2014.10.01 14:30:31 INFO app[o.s.p.m.JavaProcessLauncher] Launch process[web]:
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.55.x86_64/jre/bin/java -Xmx768m
-XX:MaxPermSize=160m -XX:+HeapDumpOnOutOfMemoryError -Djava.net.preferIPv4Stack=true -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djruby.management.enabled=false -Djava.io.tmpdir=/opt/sonar/temp -cp ./lib/common/:./lib/server/:/opt/sonar/lib/jdbc/mysql/mysql-connector-java-5.1.27.jar
org.sonar.server.app.WebServer
/tmp/sq-process7956510077635803069properties
2014.10.01 14:30:32 WARN web[o.s.p.ProcessEntryPoint] Starting web
2014.10.01 14:30:32 INFO web[o.s.s.app.Connectors] HTTP connector is enabled on port 9000
2014.10.01 14:30:32 INFO web[o.s.s.app.Webapp] Webapp directory: /opt/sonar/web
2014.10.01 14:30:33 INFO web[o.e.plugins] [sonar-1412188217506] loaded [], sites []
2014.10.01 14:30:34 INFO web[o.s.s.p.ServerImpl] SonarQube Server / 4.5 / c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:34 INFO web[o.s.c.p.Database] Create JDBC datasource for
jdbc:mysql://10.0.30.204:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance
2014.10.01 14:30:36 INFO web[o.s.s.p.DefaultServerFileSystem] SonarQube home: /opt/sonar
2014.10.01 14:30:36 INFO web[org.sonar.INFO] Install plugins...
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Findbugs / 2.4 /
a334be36ba4374bb779255272c53fb08675ac2c2
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Duplications / 4.5 /
c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Core / 4.5 / c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Java / 2.4 / 7e7e6335211bb9c0ff9727065f43e7010cc3df91
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Database Cleaner / 4.5 /
c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin English Pack / 4.5 /
c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Email notifications / 4.5 /
c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:36 INFO web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Design / 4.5 / c8bb686cbee8e1dce3312ef253db76e7c0e3c0c7
2014.10.01 14:30:36 INFO web[org.sonar.INFO] Install plugins done: 88 ms
2014.10.01 14:30:36 INFO web[o.s.s.p.RailsAppsDeployer] Deploy Ruby on Rails applications
2014.10.01 14:30:36 INFO web[o.s.j.s.AbstractDatabaseConnector] Initializing Hibernate
2014.10.01 14:30:38 INFO web[o.s.s.p.UpdateCenterClient] Update center: http://update.sonarsource.org/update-center.properties (no
proxy)
2014.10.01 14:30:38 INFO web[org.sonar.INFO] Code colorizer, supported languages: java
2014.10.01 14:30:39 INFO web[o.s.s.n.NotificationService] Notification service started (delay 60 sec.)
2014.10.01 14:30:39 INFO web[o.s.s.s.IndexSynchronizer] Starting DB to Index synchronization
2014.10.01 14:30:39 INFO web[o.s.s.s.BaseIndex] Index rules:rules has last update of Wed Oct 01 13:39:50 EDT 2014
2014.10.01 14:30:42 INFO web[o.s.s.s.BaseIndex] Index rules:activeRules has last update of Wed Oct 01 13:40:01 EDT 2014
2014.10.01 14:30:42 INFO web[o.s.s.s.BaseIndex] Index logs:sonarLogs has last update of Wed Dec 31 19:00:00 EST 1969
2014.10.01 14:30:44 INFO web[o.s.s.s.IndexSynchronizer] Synchronization done in 5413ms...
2014.10.01 14:30:44 INFO web[org.sonar.INFO] Deploy GWT plugins...
2014.10.01 14:30:44 INFO web[org.sonar.INFO] Deploy GWT plugins done: 0 ms
2014.10.01 14:30:44 INFO web[org.sonar.INFO] Load metrics...
2014.10.01 14:30:45 INFO web[o.s.s.s.RegisterMetrics] Cleaning quality gate conditions
2014.10.01 14:30:45 INFO web[org.sonar.INFO] Load metrics done: 441 ms
2014.10.01 14:30:45 INFO web[o.s.s.s.RegisterDebtModel] Register technical debt model...
2014.10.01 14:30:45 INFO web[o.s.s.s.RegisterDebtModel] Register technical debt model done: 31 ms
2014.10.01 14:30:45 INFO web[org.sonar.INFO] Register rules...
2014.10.01 14:30:47 INFO web[org.sonar.INFO] Register rules done: 2256 ms
2014.10.01 14:30:47 INFO web[o.s.s.q.RegisterQualityProfiles] Register Quality Profiles...
2014.10.01 14:30:49 INFO web[o.s.s.q.RegisterQualityProfiles] Register Quality Profiles done: 2235 ms
2014.10.01 14:30:49 INFO web[o.s.s.s.RegisterNewMeasureFilters] Register measure filters...
2014.10.01 14:30:49 INFO web[o.s.s.s.RegisterNewMeasureFilters] Register measure filters done: 4 ms
2014.10.01 14:30:49 INFO web[o.s.s.s.RegisterDashboards] Register dashboards...
2014.10.01 14:30:49 INFO web[o.s.s.s.RegisterDashboards] Register dashboards done: 9 ms
2014.10.01 14:30:49 INFO web[o.s.s.s.RegisterPermissionTemplates] Register permission templates...
2014.10.01 14:30:49 INFO web[o.s.s.s.RegisterPermissionTemplates] Register permission templates done: 2 ms
2014.10.01 14:30:49 INFO web[o.s.s.s.RenameDeprecatedPropertyKeys] Rename deprecated property keys
2014.10.01 14:30:50 INFO web[jruby.rack] jruby 1.7.9 (ruby-1.8.7p370) 2013-12-06 87b108a on OpenJDK 64-Bit Server VM
1.7.0_55-mockbuild_2014_04_16_12_11-b00 [linux-amd64]
2014.10.01 14:30:50 INFO web[jruby.rack] using a shared (threadsafe!) runtime
2014.10.01 14:31:09 INFO web[jruby.rack] keeping custom (config.logger) Rails logger instance
2014.10.01 14:31:32 INFO web[o.a.c.u.SessionIdGenerator] Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took
[22,433] milliseconds.
2014.10.01 14:31:32 INFO web[o.s.s.app.Logging] Web server is started
2014.10.01 14:31:32 INFO app[o.s.p.m.Monitor] Process[web] is up

Answer 1

I got the exact same problem for 4.5. I even downgraded to 4.4 and got the same issue.
As far as I can tell, the newer versions use elastic search and that part is totally broken.
I downgraded to version 4.3.3 and it started OK (and I didn't have to do anything special to not lose the existing data in my mysql db - from 4.3.2)

Answer 2

I reviewed the logs in /logs and read connect refused to localhost:9092,
therefore I changed (first you must stop (Ctrl+C) Sonar Server) sonar.jdbc.url property in /conf/sonar.properties:
Before:
sonar.jdbc.url: jdbc:h2:tcp://localhost:9092/sonar
Modified:
sonar.jdbc.url: jdbc:h2:tcp://127.0.0.1:9092/sonar
If you have other problems, you should deactivate Java 8 in Windows (Control Panel > Java > user tab and system tab) and close all windows of control panel, then restart Windows.
Other additional steps if it's necessary:
edit sonar-runner\conf\sonar-runner.properties
modified property:
sonar.host.url=http://127.0.0.1:9000