problem with check_yum

[Matthias Flacke]

Seth Simmons wrote:
> I think I found the problem.  When I ran check_yum locally I forgot it was running as root which explains why it worked.  Running locally as nagios caused the error.  Apparently it isn't the plugin.  If, as nagios, I run yum check-update it tells me I need to be root to access RHN repositories.  Seems CentOS doesn't have that requirement with yum, which explains why it works on all of those systems.
> 
> Running check_yum as nagios locally with sudo (nagios ALL=NOPASSWD: /usr/local/nagios/libexec/check_yum) for that one binary works.
> 
> Problem now is, using the plugin with sudo through nrpe.  When I try to run through nrpe it returns "unable to read output".
> 
> This is the command:
> command[check_yum_rhn]=/usr/bin/sudo /usr/local/nagios/libexec/check_yum
> 
> been looking around and some have had the same problem; often fixed by adding the complete path to sudo, but it isn't working here.

It seems that your /etc/sudoers contains a line

'Defaults requiretty'

If you comment it, also connections without a real tty are allowed
to run sudo commands.

-Matthias


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