如何通过shell脚本中的ssh使用另一台服务器连接到服务器? [英] How to connect to a server using another server by ssh in shell script?

问题描述

场景是这样的:

SERVER_A="servera.com"
SERVER_A_UNAME="usera"
SERVER_B="serverb.com"
SERVER_B_UNAME="userb"

我想写一个shell脚本，先连接到服务器A，然后才连接到服务器B.比如:

I want to write a shell script which will fist connect to server A, and then only it would be connected to server B. Like:

#!/bin/sh
ssh $SERVER_A_UNAME@$SERVER_A ...and then
ssh $SERVER_B_UNAME@$SERVER_B

但是我做不到.它只连接到服务器 A.我怎样才能实现它?

But I am not able to do it. It does connect to server A only. How can I achieve it?

推荐答案

你应该看看 ssh ProxyCommands，它可以让你自动进行间接连接.基本上你把以下内容放在你的 .ssh/config

you should have a look at ssh ProxyCommands that lets you do indirect connects automatically. basically you put the following in you .ssh/config

Host gateway1
  # nichts

Host gateway2
  ProxyCommand ssh -q gateway1 nc -q0 gateway2 22

Host targethost
  ProxyCommand ssh -q gateway2 nc -q0 targethost 22

然后即使无法直接访问目标主机，您也可以成功运行ssh targethost.您可以阅读更多关于此的信息，例如这里http://sshmenu.sourceforge.net/articles/transparent-mulithop.html

and then you can run ssh targethost successfully even if targethost is not reachable directly. you can read more about this e.g. here http://sshmenu.sourceforge.net/articles/transparent-mulithop.html

这篇关于如何通过shell脚本中的ssh使用另一台服务器连接到服务器?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！