title: Sonarqube can't be started in Ubuntu
body: <p>When I tried to start the sonarqube it gives me following errors.</p>
  
  <pre><code>--&gt; 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.
  
  2019.08.19 17:30:23 INFO  app[][o.s.a.AppFileSystem] Cleaning or creating temp directory /opt/sonarqube/temp
  2019.08.19 17:30:23 INFO  app[][o.s.a.es.EsSettings] Elasticsearch listening on /127.0.0.1:9001
  2019.08.19 17:30:23 INFO  app[][o.s.a.ProcessLauncherImpl] Launch process[[key='es', ipcIndex=1, logFilenamePrefix=es]] from [/opt/sonarqube/elasticsearch]: /opt/sonarqube/elasticsearch/bin/elasticsearch
  2019.08.19 17:30:23 INFO  app[][o.s.a.SchedulerImpl] Waiting for Elasticsearch to be up and running
  OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
  2019.08.19 17:30:24 INFO  app[][o.e.p.PluginsService] no modules loaded
  2019.08.19 17:30:24 INFO  app[][o.e.p.PluginsService] loaded plugin [org.elasticsearch.transport.Netty4Plugin]
  2019.08.19 17:30:41 WARN  app[][o.s.a.p.AbstractManagedProcess] Process exited with exit value [es]: 1
  2019.08.19 17:30:41 INFO  app[][o.s.a.SchedulerImpl] Process[es] is stopped
  2019.08.19 17:30:41 INFO  app[][o.s.a.SchedulerImpl] SonarQube is stopped
  &lt;-- Wrapper Stopped
  </code></pre>
  
  <p>I can't find any solution for this problem and I really need some help to run sonarqube. I might have done something wrong, but I've followed sonarqube documentation for installation.</p>
  
  <p>And this is the es.log file</p>
  
  <pre><code>Server VM/11.0.4/11.0.4+11-post-Ubuntu-1ubuntu218.04.3]
  2019.08.20 20:38:29 INFO  es[][o.e.n.Node] JVM arguments [-XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -Des.networkaddress.cache.ttl=60, -Des.networkaddress.cache.negative.ttl=10, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=/opt/sonarqube/temp, -XX:ErrorFile=../logs/es_hs_err_pid%p.log, -Des.enforce.bootstrap.checks=true, -Xms512m, -Xmx512m, -Des.path.home=/opt/sonarqube/elasticsearch, -Des.path.conf=/opt/sonarqube/temp/conf/es, -Des.distribution.flavor=default, -Des.distribution.type=tar]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [analysis-common]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [lang-painless]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [mapper-extras]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [parent-join]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [percolator]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [reindex]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [repository-url]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] loaded module [transport-netty4]
  2019.08.20 20:38:30 INFO  es[][o.e.p.PluginsService] no plugins loaded
  2019.08.20 20:38:34 WARN  es[][o.e.d.c.s.Settings] [http.enabled] setting was deprecated in Elasticsearch and will be removed in a future release! See the breaking changes documentation for the next major version.
  2019.08.20 20:38:36 INFO  es[][o.e.d.DiscoveryModule] using discovery type [zen] and host providers [settings]
  2019.08.20 20:38:36 INFO  es[][o.e.n.Node] initialized
  2019.08.20 20:38:36 INFO  es[][o.e.n.Node] starting ...
  2019.08.20 20:38:37 INFO  es[][o.e.t.TransportService] publish_address {127.0.0.1:9001}, bound_addresses {127.0.0.1:9001}
  2019.08.20 20:38:37 INFO  es[][o.e.b.BootstrapChecks] explicitly enforcing bootstrap checks
  2019.08.20 20:38:37 ERROR es[][o.e.b.Bootstrap] node validation exception
  [1] bootstrap checks failed
  [1]: max file descriptors [4096] for elasticsearch process is too low, increase to at least [65535]
  2019.08.20 20:38:37 INFO  es[][o.e.n.Node] stopping ...
  2019.08.20 20:38:37 INFO  es[][o.e.n.Node] stopped
  2019.08.20 20:38:37 INFO  es[][o.e.n.Node] closing ...
  2019.08.20 20:38:37 INFO  es[][o.e.n.Node] closed
  </code></pre>