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How to send an SSH command from a protocol that requires sudo privileges?

Solved2.22K views11th July 2023protocols serial protocol SSH
4
Jochen Dewachter [SLC] [DevOps Advocate]2.16K 13th December 2022 0 Comments

I'd like to send a command from a protocol to retrieve data from a Linux server via SSH.

However that command needs sudo elevated privileges. The response I retrieve is just the text that is asking for a username/pwd.

How can I do this from a protocol, please?

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 11th July 2023

3 Answers

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Gerwin van der Kamp [DevOps Enabler]2.92K Posted 13th December 2022 2 Comments

Can you change files on the box itself? otherwise an option can be setup passwordless sudo for that user: https://linuxhint.com/setup-sudo-no-password-linux/

or just some commands: https://askubuntu.com/questions/159007/how-do-i-run-specific-sudo-commands-without-a-password

Marieke Goethals [SLC] [DevOps Catalyst] Selected answer as best 11th July 2023
Gellynck Jens [SLC] commented 13th December 2022

Security wise it’s probably safest to only grant the specific commands sudo without password permission. Or if only the dmidecode command needs sudo privileges, you could consider fetching the same information from /sys/devices/virtual/dmi/id, /proc/cpuinfo or /proc/meminfo

Jochen Dewachter [SLC] [DevOps Advocate] commented 13th December 2022

I prefer not to do that, because in order to use that protocol, no user settings have to be adjusted on the machine itself…

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