The name node is running. Run the bin/stop-all.sh script first and then do a ps -ef | grep NameNode to see if the process is still running. If it is, it may need to be killed by hand kill -9 processid. The second problem is the setup of ssh keys as described in previous email. Also I would recommend NOT running the namenode as root but in having a specific user setup to run the various servers as described in the tutorial.

Dennis

kawther khazri wrote:
    [input]   [input]   [input]   [input]                                       
     hello,
we are trying to install nutch in single machine using this guide:
"http://wiki.apache.org/nutch/NutchHadoopTutorial?highlight=%28nutch%29";, we are blocked in this step:
   *first we execute this command as root
[EMAIL PROTECTED] search]# bin/start-all.sh
namenode running as process 16323. Stop it first.
[EMAIL PROTECTED]'s password:
localhost: starting datanode, logging to 
/nutch/search/logs/hadoop-root-datanode-localhost.localdomain.out
starting jobtracker, logging to 
/nutch/search/logs/hadoop-root-jobtracker-localhost.localdomain.out
[EMAIL PROTECTED]'s password:
localhost: tasktracker running as process 16448. Stop it first.

   *second we execute it in a normal user's session:nutch
[EMAIL PROTECTED] search]$ bin/start-all.sh
starting namenode, logging to 
/nutch/search/logs/hadoop-nutch-namenode-localhost.localdomain.out
The authenticity of host 'localhost (127.0.0.1)' can't be established.
RSA key  fingerprint is 9e:56:da:f3:72:dc:1a:91:5d:78:89:ce:89:04:3d:d3.
Are you sure you want to continue connecting (yes/no)? yes
localhost: Failed to add the host to the list of known hosts 
(/nutch/home/.ssh/known_hosts).
Enter passphrase for key '/nutch/home/.ssh/id_rsa':
[EMAIL PROTECTED]'s password:
localhost: starting datanode, logging to 
/nutch/search/logs/hadoop-nutch-datanode-localhost.localdomain.out
starting jobtracker, logging to 
/nutch/search/logs/hadoop-nutch-jobtracker-localhost.localdomain.out
The authenticity of host 'localhost (127.0.0.1)' can't be established.
RSA key fingerprint is 9e:56:da:f3:72:dc:1a:91:5d:78:89:ce:89:04:3d:d3.
Are you sure you want to continue connecting (yes/no)? yes
localhost: Failed to add the host to the list of known hosts 
(/nutch/home/.ssh/known_hosts).
Enter passphrase for key '/nutch/home/.ssh/id_rsa':
[EMAIL PROTECTED]'s password:
localhost: starting tasktracker, logging to  
/nutch/search/logs/hadoop-nutch-tasktracker-localhost.localdomain.out

what is the différence between the two. what's the meaning this message:"namenode 
running as process 16323. Stop it first." Is it normal to obtain this. I don't know 
the cause of this error.
Please, If you have any idea,help me.
BEST REGARDS,
---------------------------------
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