title: What is the default Jenkins password?
body: <p>I'm using a EC2 server instance. Used the following to install Jenkins:</p>
  
  <pre><code>wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add -
  sudo sh -c 'echo deb http://pkg.jenkins-ci.org/debian binary/ &gt; /etc/apt/sources.list.d/jenkins.list'
  sudo apt-get update
  sudo apt-get install jenkins
  </code></pre>
  
  <p>but I need to install software on the Jenkins server so in my EC2 instance I did </p>
  
  <pre><code>sudo –s –H –u jenkins
  </code></pre>
  
  <p>to get into the jenkins server.
  Then I tried to do</p>
  
  <pre><code>sudo cabal install quickcheck
  </code></pre>
  
  <p>but it prompted me for jenkins password.
  I've been searching around the internet for 4hrs now and nothing is helping me get administrative privilege in the jenkins server.</p>
  
  <p>So I'm building my project using the following command in shell:</p>
  
  <pre><code>sudo cabal clean
  sudo cabal configure
  sudo cabal build
  sudo cabal install
  </code></pre>
  
  <p>This is the error I'm getting:</p>
  
  <pre><code> Started by timer
  Building in workspace /var/lib/jenkins/jobs/Finance/workspace
  Checkout:workspace / /var/lib/jenkins/jobs/Finance/workspace - hudson.remoting.LocalChannel@eea6dc
  Using strategy: Default
  Last Built Revision: Revision b638e2182dece0ef1a40232b1d75fa3ae5c01a5d (origin/master)
  Fetching changes from 1 remote Git repository
  Fetching upstream changes from origin
  Commencing build of Revision b638e2182dece0ef1a40232b1d75fa3ae5c01a5d (origin/master)
  Checking out Revision b638e2182dece0ef1a40232b1d75fa3ae5c01a5d (origin/master)
  [workspace] $ /bin/sh -xe /tmp/hudson3500373817395137440.sh
  + sudo cabal clean
  sudo: no tty present and no askpass program specified
  Sorry, try again.
  sudo: no tty present and no askpass program specified
  Sorry, try again.
  sudo: no tty present and no askpass program specified
  Sorry, try again.
  sudo: 3 incorrect password attempts
  Build step 'Execute shell' marked build as failure
  Sending e-mails to: ***@gmail.com
  ERROR: Could not connect to SMTP host: localhost, port: 25
  javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;
    nested exception is:
      java.net.ConnectException: Connection refused
      at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1934)
      at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)
      at javax.mail.Service.connect(Service.java:295)
      at javax.mail.Service.connect(Service.java:176)
      at javax.mail.Service.connect(Service.java:125)
      at javax.mail.Transport.send0(Transport.java:194)
      at javax.mail.Transport.send(Transport.java:124)
      at hudson.tasks.MailSender.execute(MailSender.java:116)
      at hudson.tasks.Mailer.perform(Mailer.java:117)
      at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
      at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:814)
      at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:786)
      at hudson.model.Build$BuildExecution.post2(Build.java:183)
      at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:733)
      at hudson.model.Run.execute(Run.java:1592)
      at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
      at hudson.model.ResourceController.execute(ResourceController.java:88)
      at hudson.model.Executor.run(Executor.java:237)
  Caused by: java.net.ConnectException: Connection refused
      at java.net.PlainSocketImpl.socketConnect(Native Method)
      at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
      at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
      at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
      at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
      at java.net.Socket.connect(Socket.java:579)
      at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:286)
      at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:231)
      at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1900)
      ... 17 more
  Finished: FAILURE
  </code></pre>