nagios 3.0.3 error- return code of 127 is out of bounds-plugin may be missing

the port is already open and NSClient++ (Win32) service is also running.This is the output of the command from the server
[root@clone root]# telnet 192.168.0.41 12489
Trying 192.168.0.41...
Connected to oracle7 (192.168.0.41).
Escape character is '^]'.

Thanks for the prompt response.

why also the status of localhost is also showing down ?

Please check the below link
http://support.nagios.com/knowledge-base/faq/index.php?option=com_content&view=article&id=52&catid=35&faq_id=17&expand=false&showdesc=true

/usr/local/nagios/libexec is the default location where you will have nagios plugins, it can be change either during installation process.
Open /etc/nagios/resource.cfg and edit the MACRO variable to the plugin folder u configured

$USER1$=<plugin directory of nagios>

You have defined only one host called oracle7 you don't monitor the localhost. What local host are you talking about ?

If the port is open then it must be something to do with your nsclient++ installation over the windows.

In your guide

allowed_hosts contains only your network you need to include your localhost too:

allowed_hosts=127.0.0.1/32,192.168.0.41/24

I'll suggest you to enable these:

use_fle=1
debug=1
file=NSC.log

then restart your service and check the NSC.log to see if there are any reported errors.

you might also like to include
password=<your_password>

under [NCSA-Agent] section.

OUTPUT of the /usr/local/nagios/etc/resource.cf file
# Sets $USER1$ to be the path to the plugins
$USER1$=/usr/local/nagios/libexec

so make sure check_nt plugin is in the same folder and it have execute permission for nagios user.

Hi,

The reason you get this error is:
- You've installed the Nagios
- You've forgot to install Nagios-Plugins. Without Nagios Plugins installed Nagios cannot be able to check even the localhost. But nagios still does not come with any plugins and the inatallation manual does not mention about plugin installation.
- Error 127 is a result of there's no way to access any checks.
- Only after you install the plugins you'll be abl e to check your Windows server.
- If plugins were there you'd be getting data errors even if your plugin installation does not work at the Nagios Plugin Server (=your nagios client)
- Don't forget to edit nsc.ini and enable your port, allowed hosts etc. The default installation does not enable port. It only enables allowed hosts and password.

Cheers,
K.
 

I've told you You've installed "nagios" but did not install "nagios-plugins" This is why you get this error.
This is your solution. Install "nagios-plugins" and the error will stop.

BTW if you want to close the question you need to apply for the community support but since I've given you the answer you need I don2t think it is possible. Please do what I suggest first .

Cheers,
K.

Even I am behind the solution guide for this question I deserve points I prefer splitting points between KeremE and me.

"so make sure check_nt plugin is in the same folder and it have execute permission for nagios user."

I already the applied the solution which u tried to provide me before asking this question by googling around.
Thanx

There are two components which might cause the error:

The first is:
- Nagios-plugins (which provides check_nt)
- NSSClient++ Which will talk to the checknt

The second is a responsive asker. Instead of trying to cancel the question try to cooperate with us experts.

I see that both are lacking in the question. Thus it is not possible to solve the problem under these circumstances. You are right to cancel the question. But I'll suggest you to be more cooperative in the further questions if you really need an answer.