NRPE: Unable to read output (after upgrading sudo to 1.7.2p1-6.el5_5)

[Luc I. Suryo]

1) do : uname -n
the output must match the host defined, in your case ds2
JUST in case put a space between NOPASSWD: and /usr/....

2) make sure nagios has a correct/auth shell (/etc/shells)

3) add the following lines in the sudo file
Cmnd_Alias      LIST            =       /usr/bin/sudo -l
ALL             ALL     =       NOPASSWD: LIST
then as root : su - nagios 
once you are nagios do a : sudo -l 
and maybe a : sudo /usr/lib/nagios/plugins/check_ldap_fd -w 250 -c 500


not much... 

-ls

Ben O'Hara <bohara at gmail.com>
   wrote at Wed, May 19, 2010 at 10:35:56PM +0200:

> I found the same problem with sudo after an update.
> 
> Seems the comment line in the sudoers file causes a synax with
> #comment, you need a space, so # comment works ok.
> 
> Ben
> 
> On Wed, May 19, 2010 at 5:48 PM, Yungwei Chen <yungwei at resolvity.com> wrote:
> > Hi,
> >
> >        I have been using a check_ldap_fd command on a nagios client without any problem. That command requires superuser permission.
> >        After upgrading sudo to 1.7.2p1-6.el5_5, the command stops working.
> >
> >        Running the following command on my nagios server always shows the following:
> >        [TEST:root at serv1 ~]# /usr/lib/nagios/plugins/check_nrpe -H 192.168.12.2 -c check_ldap_fd
> >        NRPE: Unable to read output
> >
> >        This is the command defined in /etc/nagios/nrpe.cfg on the nagios client:
> >        command[check_ldap_fd]=/usr/bin/sudo /usr/lib/nagios/plugins/check_ldap_fd -w 250 -c 500
> >
> >        I also made the following changes to /etc/sudoers on the nagios client in order to make the command work:
> >        #Defaults    requiretty
> >        nagios ds2 = NOPASSWD:/usr/lib/nagios/plugins/check_ldap_fd
> >
> >        Any ideas? Thanks.
> >

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