I have two Debian Linux servers on the same network. I would like server A to execute this command on server B: run.sh VARIABLE, and it needs to be able to process the output of said command - however, I do not want the contents of run.sh to be viewable to server A. I need there to be some kind of authentication between these two machines as well.
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Your specs are somewhat vague. Assuming that run.sh exists somewhere on server B, the easiest would be to use an ssh forced command and using a key-pair for the ssh connection.
You define the forced command in the ~/.ssh/authorized_keys on server B and pull the VARIABLE out of SSH_ORIGINAL_COMMAND in run.sh.
server A never gets to see run.sh, is able to pass arguments to run.sh. and running run.sh is all it can ever do ...
tink
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1This works. Thank you @tink! – Anonymous Dec 26 '21 at 16:14
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Glad to hear it :) – tink Dec 26 '21 at 17:02
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Perhaps the easiest and fastest way you can accomplish this is to setup a standalone python REST server. On the client side you can use any client, even curl or python requests.
How to make a simple Python REST server and client?
As authentication it can be as simple as requiring a username and password in the JSON fields.