如何重用 ssh 连接 [英] How to reuse an ssh connection

问题描述

我正在创建一个小脚本来更新一些远程服务器(2+)
我正在与每个服务器建立多个连接；有没有办法可以重复使用 SSH 连接，这样我就不必一次打开太多?

I'm creating a small script to update some remote servers (2+)
I am making multiple connects to each server; is there a way I can reuse the SSH connections so I don't have to open too many at once?

推荐答案

如果用-M打开第一个连接:

If you open the first connection with -M:

ssh -M $REMOTEHOST

到$REMOTEHOST 的后续连接将捎带"在由主ssh 建立的连接上.最值得注意的是，不需要进一步的身份验证.有关详细信息，请参阅ControlMaster"下的 man ssh_config.使用-S指定共享socket的路径；我不确定默认值是什么，因为我使用配置文件来配置连接共享.

subsequent connections to $REMOTEHOST will "piggyback" on the connection established by the master ssh. Most noticeably, further authentication is not required. See man ssh_config under "ControlMaster" for more details. Use -S to specify the path to the shared socket; I'm not sure what the default is, because I configure connection sharing using the configuration file instead.

在我的 .ssh/config 文件中，我有以下几行:

In my .ssh/config file, I have the following lines:

host *
  ControlMaster auto
  ControlPath ~/.ssh/ssh_mux_%h_%p_%r

这样，我就不用记得用-M或-S；ssh 确定主机/端口/用户名组合是否已存在可共享连接，并在可能的情况下使用该连接.

This way, I don't have to remember to use -M or -S; ssh figures out if a sharable connection already exists for the host/port/username combination and uses that if possible.

该选项自 2004 年起在 OpenSSH 中可用.

This option is available in OpenSSH since 2004.

这篇关于如何重用 ssh 连接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！