使用 paramiko 运行 Sudo 命令

我正在尝试执行sudo使用 python-paramiko 在远程计算机上运行命令。

我尝试了这段代码：

import paramiko
ssh = paramiko.SSHClient()
ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh.connect('192.168.0.104', username='cdc',password='123456')
stdin, stdout, stderr = ssh.exec_command("sudo dmesg")
stdin.write("123456\n")
stdin.flush()
print stdout.readlines()
ssh.close()

我希望这会绑定所有三个流并将密码传递给sudo使用输入流。但它不起作用，我收到此错误：

Traceback (most recent call last):
  File "<input>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/paramiko/file.py", line 314, in write
    self._write_all(data)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/file.py", line 439, in _write_all
    count = self._write(data)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/channel.py", line 1263,in _write
    self.channel.sendall(data)
  File "/usr/local/lib/python2.7/dist-packages/paramiko/channel.py", line 796, in sendall
    raise socket.error('Socket is closed')
  error: Socket is closed

出了什么问题，我该如何解决？

首先，您是否在控制台中尝试过ssh [email protected] /cdn-cgi/l/email-protection "sudo -S -p '' dmesg"。如果也失败，那么您可以检查sshd设置和sudoer设置。

如果运行良好，请在行之间添加一些回显，以便我们可以准确地知道异常何时抛出。我非常怀疑你是否应该改变sudo dmesg to sudo -S -p '' dmesg.

你也可以试试我的帕里科包装纸。我可以使用它顺利地访问任何 CentOS/SuSE 节点并执行任何命令（w/wo sudo 权限）：

#!/usr/bin/python

from StringIO import StringIO
import paramiko 

class SshClient:
    "A wrapper of paramiko.SSHClient"
    TIMEOUT = 4

    def __init__(self, host, port, username, password, key=None, passphrase=None):
        self.username = username
        self.password = password
        self.client = paramiko.SSHClient()
        self.client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        if key is not None:
            key = paramiko.RSAKey.from_private_key(StringIO(key), password=passphrase)
        self.client.connect(host, port, username=username, password=password, pkey=key, timeout=self.TIMEOUT)

    def close(self):
        if self.client is not None:
            self.client.close()
            self.client = None

    def execute(self, command, sudo=False):
        feed_password = False
        if sudo and self.username != "root":
            command = "sudo -S -p '' %s" % command
            feed_password = self.password is not None and len(self.password) > 0
        stdin, stdout, stderr = self.client.exec_command(command)
        if feed_password:
            stdin.write(self.password + "\n")
            stdin.flush()
        return {'out': stdout.readlines(), 
                'err': stderr.readlines(),
                'retval': stdout.channel.recv_exit_status()}

if __name__ == "__main__":
    client = SshClient(host='host', port=22, username='username', password='password') 
    try:
       ret = client.execute('dmesg', sudo=True)
       print "  ".join(ret["out"]), "  E ".join(ret["err"]), ret["retval"]
    finally:
      client.close()