Hi Jon,
Thanks for the reply. So there are no errors. Essentially everything
runs as planned. Sorry for being ignorant, but I am not sure if there
is another way for providing trace data. I will look into what other
debugging I can provide.
Essentially what happens is that only the second command gets
processed and the first is ignored.
As far as the global variables are concerned, I am not too sure what
the best way is to allow my variables to be seen by another sub. In
the script I am using optparse, however in order for the variables to
make any sense to my storagessh sub, I have to declare them as global,
since all the variables within my options sub have a local scope.
I am not too sure of a better way to do this. I don't like it much
either. Hopefully you can help me shed some light on this in terms of
best practice.
Normally I declare variable scope outside of my subroutines where required.
However since variable scope is local within a subroutine, seems like
I have to declare them global in order for the other subs to see it.
Anyhow.. your feedback has been much appreciated.. The script is still
a work in progress, so I plan to do so more cosmetic enhancements once
I review it a few more times.
Thanks!
On Wed, Jun 24, 2009 at 4:34 PM, Jon Clements<jon...@googlemail.com> wrote:
> On Jun 24, 11:22 pm, Frank Ruiz <frank.r...@gmail.com> wrote:
>> Greetings,
>>
>> I am trying to process multiple commands using paramiko. I have
>> searched other threads, and I think my use case is a little different.
>> I am trying to login to a storage node that has a special shell, and
>> as such I cant execute a script on the storage node side.
>>
>> I am also trying to avoid using pexpect because I hate making system
>> calls.. hence my leaning towards paramiko.
>>
>> Was hoping someone could help me identify a way to process multiple
>> commands using paramiko.
>>
>> I have two commands listed below, however only one is getting processed.
>>
>> Any help is much appreciated.
>>
>> Thanks!
>>
>> Here is my script:
>>
>> #!/usr/bin/env python
>>
>> #-Modules---------------------------------------------------------------------
>> import optparse
>> import sys
>> import paramiko
>>
>> #-Variables-------------------------------------------------------------------
>> plog = 'storagessh.log'
>> suser = 'root'
>>
>> #-Config----------------------------------------------------------------------
>>
>> #-Subs-Defined----------------------------------------------------------------
>> def options():
>> global hostname
>> global goldenimage
>> global lunclone
>> global sshport
>>
>> usage = "usage: %prog [options] -n <nodename> -g <goldenimage> -l <lun>"
>>
>> parser = optparse.OptionParser(usage)
>>
>> parser.add_option("-n", "--node",
>> dest="hostname",
>> help="Name of storage node you are connecting to.")
>> parser.add_option("-g", "--gold",
>> dest="goldenimage",
>> help="Name of goldenimage to clone.")
>> parser.add_option("-l", "--lun",
>> dest="lunclone",
>> help="Name of lun to create.")
>> parser.add_option("-p", "--port",
>> dest="sshport",
>> default=22,
>> help="SSH port number.")
>> options, args = parser.parse_args()
>>
>> if not options.hostname:
>> parser.error("Missing hostname argument.")
>> exit
>> elif not options.goldenimage:
>> parser.error("Missing goldenimage argument.")
>> exit
>> elif not options.lunclone:
>> parser.error("Missing lun argument.")
>> exit
>>
>> hostname = options.hostname
>> goldenimage = options.goldenimage
>> lunclone = options.lunclone
>> sshport = options.sshport
>>
>> def storagessh():
>> paramiko.util.log_to_file(plog)
>> client = paramiko.SSHClient()
>> client.load_system_host_keys()
>> client.connect(hostname, sshport, suser)
>> stdin, stdout, stderr = client.exec_command('show')
>> stdin, stdout, stderr = client.exec_command('help')
>> print stdout.read()
>> client.close()
>>
>> #--Initialization-------------------------------------------------------------
>> if __name__ == "__main__":
>> options()
>> storagessh()
>
> Again, as you were asked on the original post -- full tracebacks and
> explain "what is not working".
>
> The use of global variables scares me -- why are those needed?
> --
> http://mail.python.org/mailman/listinfo/python-list
>
--
http://mail.python.org/mailman/listinfo/python-list
