gistfile1.py

with settings(host_string="root@192.168.1.8:7491"):
    run("ls")

gistfile2.pytb

SystemExit                                Traceback (most recent call last)
<ipython-input-2-1217877993c6> in <module>()
      1 with settings(host_string="root@192.168.1.8:7491"):
----> 2         run("ls")
      3 

/home/dan/.local/lib/python2.7/site-packages/fabric/network.pyc in host_prompting_wrapper(*args, **kwargs)
    645                                     " host string for connection: ")
    646             env.update(to_dict(host_string))
--> 647         return func(*args, **kwargs)
    648     host_prompting_wrapper.undecorated = func
    649     return host_prompting_wrapper

/home/dan/.local/lib/python2.7/site-packages/fabric/operations.pyc in run(command, shell, pty, combine_stderr, quiet, warn_only, stdout, stderr, timeout, shell_escape)
   1040     return _run_command(command, shell, pty, combine_stderr, quiet=quiet,
   1041         warn_only=warn_only, stdout=stdout, stderr=stderr, timeout=timeout,
-> 1042         shell_escape=shell_escape)
   1043 
   1044 

/home/dan/.local/lib/python2.7/site-packages/fabric/operations.pyc in _run_command(command, shell, pty, combine_stderr, sudo, user, quiet, warn_only, stdout, stderr, group, timeout, shell_escape)
    907         # Actual execution, stdin/stdout/stderr handling, and termination
    908         result_stdout, result_stderr, status = _execute(
--> 909             channel=default_channel(), command=wrapped_command, pty=pty,
    910             combine_stderr=combine_stderr, invoke_shell=False, stdout=stdout,
    911             stderr=stderr, timeout=timeout)

/home/dan/.local/lib/python2.7/site-packages/fabric/state.pyc in default_channel()
    388     """
    389     try:
--> 390         chan = _open_session()
    391     except ssh.SSHException, err:
    392         if str(err) == 'SSH session not active':

/home/dan/.local/lib/python2.7/site-packages/fabric/state.pyc in _open_session()
    380 
    381 def _open_session():
--> 382     return connections[env.host_string].get_transport().open_session()
    383 
    384 

/home/dan/.local/lib/python2.7/site-packages/fabric/network.pyc in __getitem__(self, key)
    157         key = normalize_to_string(key)
    158         if key not in self:
--> 159             self.connect(key)
    160         return dict.__getitem__(self, key)
    161 

/home/dan/.local/lib/python2.7/site-packages/fabric/network.pyc in connect(self, key)
    149             seek_gateway = normalize_to_string(env.gateway) != key
    150         self[key] = connect(
--> 151             user, host, port, cache=self, seek_gateway=seek_gateway)
    152 
    153     def __getitem__(self, key):

/home/dan/.local/lib/python2.7/site-packages/fabric/network.pyc in connect(user, host, port, cache, seek_gateway)
    536             # Print a newline (in case user was sitting at prompt)
    537             print('')
--> 538             sys.exit(0)
    539         # Handle DNS error / name lookup failure
    540         except socket.gaierror, e:

SystemExit: 0