Environment setup:
- Centos 7 | WHM/Cpanel installed | A user who can access Shell and is in the wheel group (sudoer)
This error occurs when trying to use a sudoer user. Users who are in the /etc/sudoers file should be able to run root commands by prefacing sudo to such commands. Here, however, when you supply the sudo command for such a user, the error is shown.
To resolve it, do the following:
1. Run the following commands to check the permissions and ownership of /usr/bin/sudo file. The expected output of the commands is also displayed below.
a)ls
-l /usr/bin/sudo
---s--x--x
1 root root 143184 Apr 11 07:30 /usr/bin/sudo
b)stat
/usr/bin/sudo
-----------------------------------
Access:
(4111/---s--x--x) Uid: (0/ root) Gid:(0/ root)
-----------------------------------
2. If the output is not as displayed above, run the following commands to set the right permissions and ownerships.
[root@serv1]# chown root:root /usr/bin
[root@serv1]# chmod u+s /usr/bin/sudo
3. Lastly, login to WHM>>Account Functions>> Manage Shell Access. Set the particular account to Normal Shell instead Jail Shell as Jail Shell has some restrictions.