SSH隧道通过Python paramiko

Question

要获得对远程主机的访问权限，我们需要登录jumphost1然后再登录jumphost2。 因为我们正在尝试创建一个隧道，如下面的python脚本所示。

此连接的主要目的是执行脚本脚本并将输出重定向到脚本所在的相同位置脚本位置是本地计算机，pyc文件将从该位置创建隧道并连接远程计算机。

添加信息：jumphost都是带密码的sshkeygen。 所以它会问密码。

[root@centseven ~]# cat pyc
import paramiko
from sshtunnel import SSHTunnelForwarder

with SSHTunnelForwarder(
    ('1.5.18.1', 22),
    ssh_username='user',
    ssh_pkey="/root/.ssh/id_rsa",
    ssh_private_key_password="userpass",
    remote_bind_address=("1.15.18.1", 22),
    local_bind_address=('127.0.0.1', 1111)
) as tunnel:
    client = paramiko.SSHClient()
    client.load_system_host_keys()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    client.connect(hostname=127.0.0.1, port=1111, username=root, password=remotepass)
    # do some operations with client session
    stdin, stdout, stderr = client.exec_command("./script >> output.txt")
    print stdout.channel.recv_exit_status()    # status is 0
    client.close()
print('FINISH!')

建议更改的当前错误，它现在要求我输入密码，并在输入密码时给出以下错误

       # python pyc
Enter passphrase for key '/root/.ssh/id_rsa':
2017-05-14 23:44:34,322| ERROR   | Secsh channel 0 open FAILED: open failed: Administratively prohibited
2017-05-14 23:44:34,337| ERROR   | Could not establish connection from ('127.0.0.1', 1111) to remote side of the tunnel
2017-05-14 23:44:34,338| ERROR   | Exception: Error reading SSH protocol banner
2017-05-14 23:44:34,339| ERROR   | Traceback (most recent call last):
2017-05-14 23:44:34,339| ERROR   |   File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/paramiko/transport.py", line 1740, in run
2017-05-14 23:44:34,339| ERROR   |     self._check_banner()
2017-05-14 23:44:34,339| ERROR   |   File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/paramiko/transport.py", line 1888, in _check_banner
2017-05-14 23:44:34,340| ERROR   |     raise SSHException('Error reading SSH protocol banner' + str(e))
2017-05-14 23:44:34,340| ERROR   | SSHException: Error reading SSH protocol banner
2017-05-14 23:44:34,340| ERROR   |
Traceback (most recent call last):
  File "pyc", line 16, in <module>
    client.connect(hostname="127.0.0.1",port=1111,username="root",password="nasadmin")
  File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/paramiko/client.py", line 338, in connect
    t.start_client()
  File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/paramiko/transport.py", line 493, in start_client
    raise e
paramiko.ssh_exception.SSHException: Error reading SSH protocol banner

EDIT1

python stack.py
Enter passphrase for key '/root/.ssh/id_rsa': 2017-05-15 00:14:24,437| ERROR   | Exception: Error reading SSH protocol banner
2017-05-15 00:14:24,439| ERROR   | Traceback (most recent call last):
2017-05-15 00:14:24,439| ERROR   |   File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/paramiko/transport.py", line 1740, in run
2017-05-15 00:14:24,440| ERROR   |     self._check_banner()
2017-05-15 00:14:24,440| ERROR   |   File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/paramiko/transport.py", line 1888, in _check_banner
2017-05-15 00:14:24,440| ERROR   |     raise SSHException('Error reading SSH protocol banner' + str(e))
2017-05-15 00:14:24,440| ERROR   | SSHException: Error reading SSH protocol banner
2017-05-15 00:14:24,440| ERROR   |

2017-05-15 00:14:24,442| ERROR   | Could not connect to gateway remotehost:22 : Error reading SSH protocol banner
Traceback (most recent call last):
  File "stack.py", line 9, in <module>
    remote_bind_address=("remotehost", 22)
  File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/sshtunnel.py", line 1482, in __enter__
    self.start()
  File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/sshtunnel.py", line 1224, in start
    reason='Could not establish session to SSH gateway')
  File "/root/.pyenv/versions/ansible2/lib/python2.7/site-packages/sshtunnel.py", line 1036, in _raise
    raise exception(reason)
sshtunnel.BaseSSHTunnelForwarderError: Could not establish session to SSH gateway

的.ssh /配置

## lo8
Host jump1-*
    User user
    IdentityFile ~/.ssh/id_rsa
    ForwardAgent yes
    ServerAliveInterval 60
    ServerAliveCountMax 12


Host jump01-temporary 
    Hostname HostIP
    Port 2222

    Host jump02
    Hostname HostIP
    Port 2222

Host jump01           
    Hostname HostIP
    Port 22
    ProxyCommand ssh -W %h:%p jump01
Host jump02           
    Hostname HostIP
    Port 22
    ProxyCommand ssh -W %h:%p jump02

Host Remote host 
    Hotname HostIP

我们需要连接本地机器的2个跳转服务器 - > JUMP1 - > Jump2 - > Remte Host

Answer 1

对于Exception ：改变
client.connect(hostname=127.0.0.1, port=1111, username=root, password=nasadmin)
至
client.connect(hostname="127.0.0.1",port=1111,username="root",password="nasadmin")

它们是string ，而不是variable 。

更新
在使用centos6.9默认ssh设置修复后你的代码测试好了然后我认为这是系统的ssh错误在administratively prohibited ：当我在remote_bind_address /etc/ssh/sshd_config中设置AllowTcpForwarding no并重启sshd时，错误来了

2017-05-17 16:11:09,475| ERROR   | Secsh channel 0 open FAILED: open failed: Administratively prohibited
2017-05-17 16:11:09,478| ERROR   | Could not establish connection from ('127.0.0.1', 3333) to remote side of the tunnel
2017-05-17 16:11:09,479| ERROR   | Exception: Error reading SSH protocol banner
2017-05-17 16:11:09,481| ERROR   | Traceback (most recent call last):
2017-05-17 16:11:09,481| ERROR   |   File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1723, in run
2017-05-17 16:11:09,481| ERROR   |     self._check_banner()
2017-05-17 16:11:09,481| ERROR   |   File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line 1871, in _check_banner
2017-05-17 16:11:09,482| ERROR   |     raise SSHException('Error reading SSH protocol banner' + str(e))
2017-05-17 16:11:09,482| ERROR   | SSHException: Error reading SSH protocol banner
2017-05-17 16:11:09,482| ERROR   | 

更多细节请参见ssh-tunneling-error-channel-1-open-failed-administratively-prohibited-open
祝好运！

Answer 2

试试这个 ：

import paramiko
from sshtunnel import SSHTunnelForwarder

with SSHTunnelForwarder(
    ('1.5.18.1', 22),
    ssh_username='user',
    ssh_pkey="/root/.ssh/id_rsa",
    ssh_private_key_password="userpass",
    remote_bind_address=("1.15.18.1", 22)
) as tunnel:
    client = paramiko.SSHClient()
    client.load_system_host_keys()
    client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    client.connect(hostname=tunnel.local_bind_host, port=tunnel.local_bind_port, username="root", password="remotepass")
    # do some operations with client session
    stdin, stdout, stderr = client.exec_command("./script >> output.txt")
    print stdout.channel.recv_exit_status()    # status is 0
    client.close()
print('FINISH!')