title: Unable to start node manager on hadoop 0.23.0
body: <p>while installing Hadoop 0.23.0 on the cluster, node manager is unable to start and getting the following error.</p>
  
  <pre><code>Caused by: org.jboss.netty.channel.ChannelException: Failed to bind to: 0.0.0.0/0.0.0.0:8080
          at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:303)
          at org.apache.hadoop.mapred.ShuffleHandler.start(ShuffleHandler.java:255)
          at org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices.start(AuxServices.java:123)
          at org.apache.hadoop.yarn.service.CompositeService.start(CompositeService.java:68)
          ... 4 more
  Caused by: java.net.BindException: Address already in use
          at sun.nio.ch.Net.bind(Native Method)
          at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126)
          at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59)
  </code></pre>