Revision 4403ff8d lib/ssh.py

b/lib/ssh.py
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    self.cluster_name = cluster_name
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  def _BuildSshOptions(self, batch, ask_key, use_cluster_key,


  		





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                       strict_host_check):


  		





  
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                       strict_host_check, private_key=None):


  		





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    """Builds a list with needed SSH options.


  		





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    @param batch: same as ssh's batch option


  		





  ......




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    @param use_cluster_key: if True, use the cluster name as the


  		





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        HostKeyAlias name


  		





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    @param strict_host_check: this makes the host key checking strict


  		





  
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    @param private_key: use this private key instead of the default


  		





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    @rtype: list


  		





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    @return: the list of options ready to use in L{utils.RunCmd}


  		





  ......




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    if use_cluster_key:


  		





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      options.append("-oHostKeyAlias=%s" % self.cluster_name)


  		





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    if private_key:


  		





  
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      options.append("-i%s" % private_key)


  		





  
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    # TODO: Too many boolean options, maybe convert them to more descriptive


  		





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    # constants.


  		





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    return options


  		





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  def BuildCmd(self, hostname, user, command, batch=True, ask_key=False,


  		





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               tty=False, use_cluster_key=True, strict_host_check=True):


  		





  
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               tty=False, use_cluster_key=True, strict_host_check=True,


  		





  
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               private_key=None):


  		





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    """Build an ssh command to execute a command on a remote node.


  		





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    @param hostname: the target host, string


  		





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    @param use_cluster_key: whether to expect and use the


  		





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        cluster-global SSH key


  		





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    @param strict_host_check: whether to check the host's SSH key at all


  		





  
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    @param private_key: use this private key instead of the default


  		





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    @return: the ssh call to run 'command' on the remote host.


  		





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    """


  		





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    argv = [constants.SSH, "-q"]


  		





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    argv.extend(self._BuildSshOptions(batch, ask_key, use_cluster_key,


  		





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                                      strict_host_check))


  		





  
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                                      strict_host_check, private_key))


  		





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    if tty:


  		





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      argv.append("-t")


  		





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    argv.extend(["%s@%s" % (user, hostname), command])


  		












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