使用不同于ssh密钥所有者的用户，使用rsync + ssh + public key同步本地和远程目录 [英] Syncing local and remote directories using rsync+ssh+public key as a user different to the ssh key owner

问题描述

目标是通过ssh同步本地和远程文件夹。

The goal is to sync local and remote folders over ssh.

我当前的用户是 user1 ，而且我没有密码通过ssh访问设置到服务器 server1 。
我想通过 rsync 实用程序将本地文件夹与 server1 上的文件夹同步。
通常我会运行：

My current user is user1, and I have a password-less access setup over ssh to a server server1. I want to sync local folder with a folder on server1 by means of rsync utility. Normally I would run:

rsync -rtvz /path/to/local/folder server1:/path/to/remote/folder

ssh 访问按预期工作， rsync 可以通过 ssh 连接，但是返回Permission denied错误，因为在 server1 文件夹 / path / to / remote / folder 由 user2 拥有： user2 。该文件夹的文件权限不允许任何其他人更改。
user1 是 server1 上的sudoer，所以 sudo su - user2 在 ssh 会话期间。
如何在 rsync 中切换用户，当 ssh 发送到服务器时

ssh access works as expected, rsync is able to connect over ssh, but it returns "Permission denied" error because on server1 the folder /path/to/remote/folder is owned by user2:user2. File permissions of the folder do not allow it to be altered by anyone else. user1 is a sudoer on server1 so sudo su - user2 works during ssh session. How to forse rsync to switch the user when it ssh'ed to the server?

将 user1 添加到组 user2 不是一个选项，因为服务器上的所有用户/组管理都是自动完成的，每X分钟从中央回购复制，我没有访问。

Adding user1 to the group user2 is not an option because all user/group management on the server is done automatically and replicated from a central repo every X mins, that I have not access to.

与更改目标文件夹的权限/所有权相同：定期自动更新所有权限的重置。

Same for changing permissions/ownership of the destination folder: it is updated automatically on a regular basis with a reset of all permissions.

我想到的可能解决方案是将本地文件夹与服务器上的 user1 所拥有的临时中间远程文件夹同步的脚本，然后将两个远程文件夹同步为用户2 。

Possible solution coming to my mind is a script that syncs the local folder with a temporary intermediate remote folder owned by user1 on the server, and then syncs two remotes folders as user2.

搜索更短更漂亮的解决方案没有成功。

Googling for a shorter and prettier solution did not yield any success.

推荐答案

我没有尝试过，但是如何使用rsync的'--rsync-path'选项？

I have not tried it by myself, but how about using rsync's '--rsync-path' option?

rsync -rtvz --rsync-path='sudo -u user2 rsync' /path/to/local/folder server1:/path/to/remote/folder

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