How to enable sudo commands over SSH without asking password?
It seems like I had a "typo" in the /etc/sudoers
file...
jeff ALL=NOPASSWD: ALL
needed to be at the very end of file. Ubuntu Help only says Add (...) to the END of the file (if not at the end it can be nullified by later entries)
After that, password is never asked for "jeff's sudo commands, either locally or over SSH.
Jeff
Updated on September 18, 2022Comments
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Jeff over 1 year
I have server A and server B (both Ubuntu 10.04 LTS) doing different tasks. Server A needs to poke Server B, which generates a file and scp's it back to server A when done. This is all in-house and I am not too concerned about security issues. SSH Key exchange is already performed between servers A and B and works fine.
On server B, the script
generateOfflineSig
looks like#!/bin/bash echo "in script" sudo apt-offline set offline_package.sig --install-packages "$0" echo "after sudo" scp offline_package.sig jeff@servera:/tmp
Also on server B, visudo has this entry:
jeff ALL=NOPASSWD: ALL
Which works if I execute
sudo ls
on Server B... no password asked.Unfortunately SSH always asks for a password on Server A:
jeff@servera:~$ ssh -t jeff@serverb /home/jeff/generateOfflineSig "incron" in script [sudo] password for jeff:
Any ideas? This process can't be interrupted by password input.
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snapshoe almost 11 yearsNot 100% sure of
/etc/sudoers
syntax, but my file has the line# %wheel ALL=(ALL) NOPASSWD: ALL
. Maybe your line should bejeff ALL=(ALL) NOPASSWD: ALL
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HiFi almost 11 yearsDoesn't the entire remote command have to be in quotes? You might be executing the script on Sever A
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Jeff almost 11 yearsActually... I think snapshoe is on to something. I'll answer my own question a bit later...
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