title: Unsuccessful connection on ssh to the subordinate nodes of a cluster
body: <p>Executing start of services on the subordinate nodes of a cluster by means of the following command:</p>
  
  <pre><code>hadoop@one:/export/hadoop-1.0.1/bin$. ./start-all.sh
  </code></pre>
  
  <p>not the first time I receive result</p>
  
  <pre><code>starting namenode, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop--namenode-one.out
  192.168.1.10: starting datanode, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop-hadoop-datanode-myhost2.out
  192.168.1.11: ssh: connect to host 192.168.1.11 port 22: Connection timed out
  192.168.1.5: starting secondarynamenode, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop-hadoop-secondarynamenode-one.out
  starting jobtracker, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop--jobtracker-one.out
  192.168.1.10: starting tasktracker, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop-hadoop-myhost2.out
  192.168.1.11: ssh: connect to host 192.168.1.11 port 22: Connection timed out
  </code></pre>
  
  <p>How do I fix the error below:</p>
  
  <pre><code>ssh: connect to host port 22: Connection timed out
  
  hadoop@one: /export/hadoop-1.0.1/bin$ ssh -vvv 192.168.1.10
  Sun_SSH_1.5, SSH protocols 1.5/2.0, OpenSSL 0x1000004f
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: Rhosts Authentication disabled, originating port will not be trusted.
  debug1: ssh_connect: needpriv 0 
  debug1: Connecting to 192.168.1.10 [192.168.1.10] port 22
  debug1: connect to address 192.168.1.10 port 22: Connection timed out
  ssh: connect to host 192.168.1.10 port 22: Connection timed out
  </code></pre>
  
  <p>What to do to correct an error?</p>