title: Can't put files into HDFS
body: <p>I'm trying to set up a hadoop multi-node cluster and I'm getting the following problem.
  I have one node as master and another one as slave.</p>
  
  <p>It seems that everything is all right because when I execute <code>{jps}</code> I get this processes for the master:</p>
  
  <pre><code>{
  29983 SecondaryNameNode
  30596 Jps
  29671 NameNode
  30142 ResourceManager
  }
  </code></pre>
  
  <p>And this ones for the slave: </p>
  
  <pre><code>{  
  18096 NodeManager  
  17847 DataNode  
  18197 Jps  
  }  
  </code></pre>
  
  <p>Unfortunately, when I try <code>-put</code> command, I get this error:</p>
  
  <blockquote>
    <p>hduser@master:/usr/local/hadoop/bin$ ./hdfs dfs -put /home/hduser/Ejemplos/fichero /Ejemplos/
    14/03/24 12:49:06 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
    14/03/24 12:49:07 WARN hdfs.DFSClient: DataStreamer Exception
    org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /Ejemplos/fichero.<em>COPYING</em> could only be replicated to 0 nodes instead of minReplication (=1).  There are 0 datanode(s) running and no node(s) are excluded in this operation.</p>
  </blockquote>
  
  <p>When I go to the WebUI, there are 0 live nodes and I don't know why!
  I can't fix this error and I would appreciate some help!</p>