Is there any way to allow user modify process niceness without giving root permisions?
OS: Ubuntu 14.04.1 LTS
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Do using `sudo nice` counts as _giving root permissions_? – ThoriumBR Dec 22 '14 at 13:08
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Related: https://askubuntu.com/questions/564375/allow-users-to-set-higher-lower-nice-levels – fuenfundachtzig Mar 02 '19 at 09:55
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Since allowing sudo nice is pretty much the same as granting root permissions, I would not consider doing that.
I see two possible solutions:
1/ Allow the full command via sudo and pin it's parameters, like:
%nicegroup ALL=/bin/nice --20 /bin/whatever
But that works only if it is always the same program that needs nice'ing.
2/ Allow only renice via sudo like this:
%nicegroup ALL=/bin/renice
The users then need to start their program like always and afterwards manually renice it via sudo /bin/renice 20 -p $PID.
That is manual effort, but it can be scripted to be automated.
faker
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No, there is not. nice is one of those commands that will run the process given in its own context - that is, if you allow sudo nice, any commands passed to nice will be executed as root. It may be possible to use /etc/limits.conf and use nice limits that way and run the script you want to be higher/lower priority, but it doesn't help with renice.
Nathan C
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