paramiko和python ssh

Question

我正在尝试将安装程序ssh连接连接到主机。这是我的代码：

def make_connection_paramiko(Username, Password):
    ssh = paramiko.SSHClient()
    hostname = "username@hobbes.cs.ucsb.edu"
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.load_host_keys(os.path.expanduser(os.path.join("~", ".ssh", "known_hosts")))
    try:
        ssh.connect(hostname, port = 22, username = 'username', password = 'password')
    except paramiko.AuthenticationException:
        print "Login failed! %s\t%s" %(username, password)
    except socket.timeout:
        print "Socket connection failed"
        #print str(value) +"\t"+ message
    else:
        print "Login Successful! %s\t%s" %(username, password)
    ssh.close()

但出于某种原因，我继续得到以下错误：

Traceback (most recent call last):
  File "pass_crack.py", line 56, in <module>
    begin_cracking(wordlist, username)
  File "pass_crack.py", line 45, in begin_cracking
    make_connection_paramiko(username, "hello")
  File "pass_crack.py", line 29, in make_connection_paramiko
    ssh.connect(hostname, port = 3600, username = 'xxxxxxx', password = 'xxxxxx')
  File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 282, in connect
    for (family, socktype, proto, canonname, sockaddr) in socket.getaddrinfo(hostname, port, socket.AF_UNSPEC, socket.SOCK_STREAM):
socket.error: [Errno 2] No such file or directory

我正在尝试使用paramiko与python连接，我使用的是Ubuntu13.04。我不知道是怎么回事，当我试图用相同的值连接主机名、用户名和密码时，连接是有效的，那么为什么它不适用于paramiko呢？

提前感谢

Answer 1

回答

那不是主机名：

hostname = "username@hobbes.cs.ucsb.edu"

相反，这是一个连接字符串。删除username@部分，它应该再次连接。

更多信息

记住，你总是可以看一下源代码的。在这里，您可以看到主机名被传递给直接进入原始套接字调用

socket.getaddrinfo(hostname, port, socket.AF_UNSPEC, socket.SOCK_STREAM)

查看socket.getaddrinfo的帮助，我们可以看到它试图解析一个实际的主机名，类似于nslookup所需的语法

>>> print socket.getaddrinfo.__doc__
getaddrinfo(host, port [, family, socktype, proto, flags])
    -> list of (family, socktype, proto, canonname, sockaddr)

Resolve host and port into addrinfo struct.

最后，我建议在paramiko和其他底层库中启用debugging：

>>> import logging
>>> logger = paramiko.util.logging.getLogger()
>>> logger.setLevel(logging.DEBUG)