User not in group wheel can't sudo with password

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1

I have configured ‘/etc/sudoers’ to activate group wheel.

##
## User privilege specification
##
root ALL=(ALL) ALL

##
## Uncomment to allow members of group wheel to execute any command
# %wheel ALL=(ALL) ALL

##
## Same thing without a password
%wheel ALL=(ALL) NOPASSWD: ALL

##
## Read drop-in files from /etc/sudoers.d
## (the '#' here does not indicate a comment)
#includedir /etc/sudoers.d

I have put one user in the group wheel, and it is working as expected for that user.

The problem occure when a user not in that group try to use sudo.
Example 1
normal user logged : user_test
user in group wheel : super_user


:~> sudo blkid
[sudo] passord for super_user:**************
user_test is not in the sudoers file. This incident will be reported.
:~>

Example 2
user logged : super_user
user in group wheel : super_user


:~> sudo blkid
/dev/sda3: LABEL="WINDOWS_10" UUID="A6B4ED96B4ED696F" TYPE="ntfs" PARTLABEL="Microsoft basic data" PARTUUID="b197e1f7-fa83-42a7-9916-18b80497a915"
/dev/sda4: LABEL="MS_RESERV1" UUID="96625C83625C6A4F" TYPE="ntfs" PARTUUID="44843f03-1e2e-453f-871e-805eb5298163"
/dev/sda5: LABEL="MS_RESERV2" UUID="700262BC026286C6" TYPE="ntfs" PARTLABEL="Microsoft reserved" PARTUUID="8547c1fd-01cd-4088-a587-d9f6057638aa"
/dev/sda6: LABEL="MS_RESERV3" UUID="D25CCA125CC9F0F1" TYPE="ntfs" PARTLABEL="Microsoft reserved" PARTUUID="bbad3d9a-6d15-4596-ae9b-01766847cc6b"
/dev/sda7: LABEL="WIN_DSK_D" UUID="923C8E4E3C8E2CF3" TYPE="ntfs" PARTLABEL="Microsoft basic data" PARTUUID="7f500d78-55ef-4b7b-8772-4c9430a5be05"
/dev/sda8: LABEL="LNX_SLASH" UUID="14d9d467-fe36-4f53-868e-bc6b27a59255" TYPE="ext4" PARTLABEL="Linux filesystem" PARTUUID="e52234bf-e3b3-49b5-825a-4455fc504de5"
:~>

1°)
Why sudo is asking the password of the user in the group wheel and not the password for root.

2°)
I would like normal user (user not in the group wheel) to use sudo with the root password ( when they know it )

Any help is welcome.

2

I have never been a fan of “sudo” so I don’t have experience with this.

Your user who knows the root password should be able to use “su” to become root.

3

This description seems to match the options runaspw and runas_default. Do you have these settings in any files under /etc/sudoers.d/?

Add the user on sudoers as the message indicates. Instead of %wheel use user_test. Or create another group and add user_test to this group. This won’t have the NOPASSWD directive.

You might want to take another look at man sudo.

4

Default behavior of openSUSE is to ask for target user password. Before changing default settings it makes sense to at least understand them.

I would like normal user (user not in the group wheel) to use sudo with the root password ( when they know it )

If you insist …

ALL,!%wheel ALL=(ALL) ALL

This description matches default sudo behavior without anything in /etc/sudoers(.d). Default /etc/sudoers in openSUSE sets targetpw option.