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Old 09-27-2010, 11:53 PM
T o n g
 
Default root can't sudo

Hi,

I had no problem invoking my scripts embedded with sudo as root before,
but not now in my new installation:

root@coral:~# echo abc | sudo tee /tmp/t
sudo: can't open /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting

root@coral:~# id
uid=0(root) gid=0(root) groups=0(root)

root@coral:~# ls -l /etc/sudoers
-r--r----- 1 root root 2354 2010-09-17 09:34 /etc/sudoers

root@coral:~# head -1 /etc/sudoers
# sudoers file.

What could be wrong?

Thanks

--
Tong (remove underscore(s) to reply)
http://xpt.sourceforge.net/techdocs/
http://xpt.sourceforge.net/tools/


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Old 09-28-2010, 12:16 AM
Tom H
 
Default root can't sudo

On Mon, Sep 27, 2010 at 7:53 PM, T o n g <mlist4suntong@yahoo.com> wrote:
>
> I had no problem invoking my scripts embedded with sudo as root before,
> but not now in my new installation:
>
> root@coral:~# echo abc | sudo tee /tmp/t
> sudo: can't open /etc/sudoers: Permission denied
> sudo: no valid sudoers sources found, quitting
>
> root@coral:~# id
> uid=0(root) gid=0(root) groups=0(root)
>
> root@coral:~# ls -l /etc/sudoers
> -r--r----- 1 root root 2354 2010-09-17 09:34 /etc/sudoers
>
> root@coral:~# head -1 /etc/sudoers
> # sudoers file.
>
> What could be wrong?

grep root /etc/sudoers


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Old 09-28-2010, 12:34 AM
T o n g
 
Default root can't sudo

On Mon, 27 Sep 2010 20:16:05 -0400, Tom H wrote:

>> What could be wrong?
>
> grep root /etc/sudoers

% grep ^root /etc/sudoers
root ALL=(ALL) ALL

It has always been there.

--
Tong (remove underscore(s) to reply)
http://xpt.sourceforge.net/techdocs/
http://xpt.sourceforge.net/tools/


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Old 09-28-2010, 02:09 AM
Tom H
 
Default root can't sudo

On Mon, Sep 27, 2010 at 8:34 PM, T o n g <mlist4suntong@yahoo.com> wrote:
> On Mon, 27 Sep 2010 20:16:05 -0400, Tom H wrote:
>
>>> What could be wrong?
>>
>> grep root /etc/sudoers
>
> % grep ^root /etc/sudoers
> root ALL=(ALL) ALL
>
> It has always been there.

Sorry, no idea then.


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Old 09-28-2010, 02:16 AM
Tom H
 
Default root can't sudo

On Mon, Sep 27, 2010 at 10:09 PM, Tom H <tomh0665@gmail.com> wrote:
> On Mon, Sep 27, 2010 at 8:34 PM, T o n g <mlist4suntong@yahoo.com> wrote:
>> On Mon, 27 Sep 2010 20:16:05 -0400, Tom H wrote:
>>
>>>> What could be wrong?
>>>
>>> grep root /etc/sudoers
>>
>> % grep ^root /etc/sudoers
>> root ALL=(ALL) ALL
>>
>> It has always been there.
>
> Sorry, no idea then.

Spoke too early.

Do you have the "!root_sudo" option set?


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Old 09-28-2010, 02:22 AM
T o n g
 
Default root can't sudo

On Mon, 27 Sep 2010 22:16:34 -0400, Tom H wrote:

> Do you have the "!root_sudo" option set?

Nope:

$ sudo cat /etc/sudoers | grep root_sudo || echo no
no

Thank you all the same.

--
Tong (remove underscore(s) to reply)
http://xpt.sourceforge.net/techdocs/
http://xpt.sourceforge.net/tools/


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Old 09-28-2010, 02:44 AM
Tom H
 
Default root can't sudo

On Mon, Sep 27, 2010 at 10:22 PM, T o n g <mlist4suntong@yahoo.com> wrote:
> On Mon, 27 Sep 2010 22:16:34 -0400, Tom H wrote:
>
>> Do you have the "!root_sudo" option set?
>
> Nope:
>
> $ sudo cat /etc/sudoers | grep root_sudo || echo no
> no
>
> Thank you all the same.

You're welcome.

Do you have an "/etc/pam.d/sudo" file? Can another user use sudo? Any
hint about the reason for the failure in "/var/log/auth.log"?


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Old 09-28-2010, 02:52 AM
T o n g
 
Default root can't sudo

My bad.

The failed environment is a linux-live environment that I built myself.
When mirroring it to HD, everything works fine. So it's actually the live
environment's problem, not sudo's.

Thanks again for your comprehensive tips, which I'll garter bellow in
case someone else need to troubleshoot:

- Make sure the 'root ALL=(ALL) ALL' line is in /etc/sudoers

% grep ^root /etc/sudoers
root ALL=(ALL) ALL

- should not have the "!root_sudo" option set

$ sudo cat /etc/sudoers | grep root_sudo || echo no
no

Also check,

On Mon, 27 Sep 2010 22:44:07 -0400, Tom H wrote:

> Do you have an "/etc/pam.d/sudo" file? Can another user use sudo? Any
> hint about the reason for the failure in "/var/log/auth.log"?

Thanks again.

--
Tong (remove underscore(s) to reply)
http://xpt.sourceforge.net/techdocs/
http://xpt.sourceforge.net/tools/


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Old 09-28-2010, 03:53 AM
Tom H
 
Default root can't sudo

On Mon, Sep 27, 2010 at 10:52 PM, T o n g <mlist4suntong@yahoo.com> wrote:
> My bad.
>
> The failed environment is a linux-live environment that I built myself.
> When mirroring it to HD, everything works fine. So it's actually the live
> environment's problem, not sudo's.
>
> Thanks again for your comprehensive tips, which I'll garter bellow in
> case someone else need to troubleshoot:
>
> - Make sure the 'root ALL=(ALL) ALL' line is in /etc/sudoers
>
> % grep ^root /etc/sudoers
> root ALL=(ALL) ALL
>
> - should not have the "!root_sudo" option set
>
> $ sudo cat /etc/sudoers | grep root_sudo || echo no
> no
>
> Also check,
>
> On Mon, 27 Sep 2010 22:44:07 -0400, Tom H wrote:
>
>> Do you have an "/etc/pam.d/sudo" file? Can another user use sudo? Any
>> hint about the reason for the failure in "/var/log/auth.log"?
>
> Thanks again.

You're welcome.


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Old 09-28-2010, 07:01 AM
Alexander Hintzer
 
Default root can't sudo

Am 28.09.2010 02:16, schrieb Tom H:

On Mon, Sep 27, 2010 at 7:53 PM, T o n g<mlist4suntong@yahoo.com> wrote:


I had no problem invoking my scripts embedded with sudo as root before,
but not now in my new installation:

root@coral:~# echo abc | sudo tee /tmp/t
sudo: can't open /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting

root@coral:~# id
uid=0(root) gid=0(root) groups=0(root)

root@coral:~# ls -l /etc/sudoers
-r--r----- 1 root root 2354 2010-09-17 09:34 /etc/sudoers

root@coral:~# head -1 /etc/sudoers
# sudoers file.

What could be wrong?


grep root /etc/sudoers


Why should one use "sudo" in addition to being root and thus having all
rights?
I would understand if you add your own user to the sudoers file...but
this way...
Can you tell me the sense behind it? I mean i am really interested in,
because maybe there is something new i can learn about "sudo".



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