尝试编辑文件时出现paramiko错误:"sudo:不存在tty且未指定askpass程序" [英] Paramiko error when trying to edit file: "sudo: no tty present and no askpass program specified"

问题描述

我正在使用Paramiko进行SSH并编辑配置文件.文件本身需要sudo权限才能进行编辑.到目前为止，这还不是问题，因为我已经为脚本中的其他sudo命令完成了echo <sudopw> | sudo <command>.

I am using Paramiko to SSH and edit a config file. The file itself needs sudo permissions to edit. This hasn't been a problem so far, as I've just done echo <sudopw> | sudo <command> for other sudo commands in my script.

但是，当我尝试使用sed编辑此文件时，什么都没有发生. stderr产生:sudo: no tty present and no askpass program specified

When I try to edit this file using sed, though, nothing happens. stderr produces: sudo: no tty present and no askpass program specified

这是我的代码:

stdin, stdout, stderr = client.exec_command
('echo <sudopassword> | sudo sed -i -e \"\\$aAllowUsers\" /etc/ssh/sshd_config)')

我尝试使用invoke_shell解决方案，但似乎没有任何效果.任何编辑此文件的解决方案都将有所帮助.

I have tried solutions using invoke_shell but nothing seems to be working. Any solution to edit this file would be helpful.

此问题已解决！不要使用get_pty.在"sudo"之后立即使用sudo的-S选项.

This has been solved! Don't use get_pty. Use the -S option of sudo right after "sudo".

推荐答案

如果您阅读错误消息

sudo: no tty present and no askpass program specified

然后您可以轻松找到解决方案:将-t选项添加到

then you can easily find the solution: add the -t option to your ssh command:

-t
强制伪终端分配.这可用于在远程计算机上执行任意基于屏幕的程序，这可能非常有用，例如实施菜单服务时.多个 -t 选项强制tty分配，即使ssh没有本地tty.

-t
Force pseudo-terminal allocation. This can be used to execute arbitrary screen-based programs on a remote machine, which can be very useful, e.g. when implementing menu services. Multiple -t options force tty allocation, even if ssh has no local tty.

这已经在前面讨论过了:

This has been discussed before:

• 如何解决"sudo:不存在tty且未指定AskPass程序"错误?
• sudoers NOPASSWD:sudo:没有tty当前且未指定AskPass程序

• How to fix 'sudo: no tty present and no askpass program specified' error?
• sudoers NOPASSWD: sudo: no tty present and no askpass program specified

关于帕拉米科(Paramiko)，存在一些相关的问题，有几种不同的解决方法:

Regarding Paramiko, there have been related questions, with a couple of different approaches:

• 使用 get_pty Channel的a>获取伪终端的方法(类似于告诉ssh这样做)
• 使用sudo的-S选项，然后在标准输出上发送密码.

• use the get_pty method of the ssh Channel to obtain a pseudo-terminal (which is analogous to telling ssh to do this)
• use the -S option of sudo, and send the password on your standard output.

有关讨论，请参见此处的建议答案:

For discussion, see the suggested answers here:

• Paramiko和伪tty分配
• 与Paramiko嵌套的SSH会话

• Paramiko and Pseudo-tty Allocation
• Nested SSH session with Paramiko

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