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The following apply to ``master`` node. Here we will create a Ganeti cluster with


  		





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all available ``ganeti`` nodes:


  		





  
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all available ``ganeti`` nodes. Please note that Ganeti needs a pair of rsa/dsa keys


  		





  
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for the root user. If already exist in `/root/.ssh/` in all nodes then --no-ssh-init


  		





  
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can be used. In omitted then the existing files will be overriden. Upon node add


  		





  
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Ganeti will replace `/etc/ssh/ssh_host*` files with the master's ones:


  		





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.. code-block:: console


  		





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    # gnt-group modify --disk-parameters=drbd:metavg=ganeti default


  		





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    # for n in node2 node3 node4 node5 node6; do


  		





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        gnt-node add --no-node-setup --master-capable=yes --vm-capable=yes $n.example.com


  		





  
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        gnt-node add --no-ssh-key-check --master-capable=yes --vm-capable=yes $n.example.com


  		





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      done


  		





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We need to add a rapi user to Ganeti so that Synnefo can talk with the backend:


  		












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