我正在使用Paramiko库ssh在两台服务器之间运行命令。我的"Master"服务器是一个Fedora 18盒子，我"Slave"的是一Windows 7台机器。为了在机器上运行ssh服务器Windows 7，我安装了FreeSSHd。配置后freesshd我可以ssh从 Fedora 18 机器进入 Windows 机器并执行类似的命令dir。但是，当我尝试这样做时Paramiko，我没有同样的运气：
import paramiko
import os
import errno
"""
written by Philippe Ribeiro
class Connection
stabilishes the ssh connection between two servers
allowing the executing of commands remotely
"""
class Connection:
def __init__( self, hostname, username, password):
"""Create a ssh client using the paramiko library
"""
self.host = hostname
self.user = username
self.password = password
self.port = 23
self.sshclient = paramiko.SSHClient()
self.username = username
self.password = password
try:
self.sshclient.load_system_host_keys()
self.sshclient.set_missing_host_key_policy( paramiko.AutoAddPolicy() )
self.sshclient.connect( hostname=self.host, port=self.port,
username=self.username, password=self.password )
self.sftpclient = self.sshclient.open_sftp()
except SSHException, e:
print e
except AuthenticationException, e:
print e
except BadHostKeyException, e:
print e
def close(self):
"""Closes a client using the Connection class' API
"""
self.sshclient.close()
return
def remove_directory(self, path):
"""Remove remote directory that may contain files
It does not support directories that contain subdiretories
"""
if self.exists(path):
for filename in self.sftpclient.listdir(path):
filepath = os.path.join(path, filename)
self.sfptclient.remove(filepath)
self.sftpclient.rmdir(path)
return
def exists(self, path):
"""Return True if the remote path exists
"""
try:
self.sfptclient.stat(path)
except IOError, e:
if e.errno == errno.ENOENT:
return False
raise
else:
return True
def put_directory(self, localdir, remotedir):
"""Put a directory of files on the remote server
Create the remote directory if it does not exist
Does not support directories that contain subdirectories
Return the number of files transferred
"""
if not self.exists(remotedir):
self.sftp.client.mkdir(remotedir)
count = 0
for filename in os.listdir(localdir):
self.sftpclient.put(
os.path.join(localdir, filename),
os.path.join(remotedir, filename)
)
count += 1
return count
"""
Just for testing purposes
try to connect to a Windows machine from a Unix one
so it can execute commands remotely
"""
cmd = ["cd ..", "dir" ]
client = Connection("hostname", "username", "password")
try:
for c in cmd:
stdin, stdout, stderr = client.sshclient.exec_command(c)
print stdout.readlines()
except SSHException, e:
print e
client.close()
但是当我执行时：
python client.py
我得到：
['Unable to execute command or shell on remote system: Failed to Execute process.\r\n']
['Unable to execute command or shell on remote system: Failed to Execute process.\r\n']
有人可以告诉我为什么不工作吗？我错过了什么吗？