On Tue, Feb 2, 2021 at 12:04 PM Mustapha Aissat via FreeIPA-users <
[email protected]> wrote:
>
> Hi all,
>
> I have a question regarding sudo command and rules in FreeIPA, is it
possible to allow a user to only install packages and not remove?
> for example the sudo command will look,like : /usr/bin/dnf install *****
>
> I tried to configure sudo command as "/usr/bin/dnf install" and it didn't
work
> If I use set the command to "/usr/bin/dnf" it works. But the user is also
allowed to remove packages!
>
> Any suggestions please?
>

>From `man sudoers(5)`, you will find that you can use the '!' operator
(remember to read its limitations).
For example, if you add the following in sudoers file:

  admin ALL=/usr/bin/dnf, !/usr/bin/dnf remove

User `admin` will be able to execute all dnf commands with sudo, but `sudo
dnf remove` will fail. The problem is that `sudo dnf remove emacs` will
succeed.

If you change the configuration to:

  admin ALL=/usr/bin/dnf, !/usr/bin/dnf remove *

Then you will have the effect you want, but `sudo dnf -y remove emacs` will
remove emacs.

Changing to:

  admin ALL=/usr/bin/dnf, !/usr/bin/dnf *remove*

Will prevent `dnf remove` to be executed, but it will also prevent any dnf
command that has "remove" anywhere in the command line.

Most of the suggestions I found, for similar issues, include creating a
wrapper script and providing access to that script.

Rafael

--
Rafael Guterres Jeffman
Senior Software Engineer
FreeIPA - Red Hat
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