Monitor pfSense v.2 NRPE2

[AWS]

Hello.

CentOS 5
32-bit
Manual Install of XI
Transparent proxy in place, no SSL

I'm running a pfSense 2.0.1 system. An add-on within the system is NRPE2 monitoring for Nagios. Out of the box it has some pre-built checks. I setup monitoring within my Nagios server but all I get to work is the basic ping check.

Here is the out of the box settings within pfS:


I setup a new config based off of "other" for monitoring a Unix machine. I change my values in Nagios while setting up to match the "extra options" setup on the pfS side.

Can anyone give me some ideas what I'm doing wrong? What "more details" do I need to explain or show to make better sense of this issue?

Thanks
AWS

[lmiltchev]

What is the output of the following command, ran from the command line on the Nagios server?

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# /usr/local/nagios/libexec/check_nrpe -H <your_target_machine_IP_address>

[AWS]

It reads:

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NRPE v2.12

Thanks!

AWS

[AWS]

The command within Nagios I am using for checking disk /var/run is:

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check_nrpe!check_disk!-a '-w 20% -c 10% -p /var/run'

Which appears to be the same settings as the screen shot above. Yes?

AWS

[lmiltchev]

OK, try running these commands from the Nagios server in the command line:

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#  ./check_nrpe -H <your_target_machine_IP_address> -t 30 -c check_disk -a '-w 20% -c 10% -p /'

and

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#  ./check_nrpe -H <your_target_machine_IP_address> -t 30 -c check_disk -a '-w 20% -c 10% -p /var/run'

Can you post the output of these commands?

[AWS]

Thanks for the help.

Results are as follows:

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[root@nagios ~]# ./check_nrpe -H 10.1.1.254 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
-bash: ./check_nrpe: No such file or directory
[root@nagios ~]#

"No such file or directory" for both commands.

AWS

[yancy]

Are you in the correct directory?

Try:

/usr/local/nagios/libexec/check_nrpe -H 10.1.1.254 -t 30 -c check_disk -a '-w 20% -c 10% -p /

[AWS]

Thanks for the location of the check_nrpe command. I was looking for it...

Results:

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[root@nagios ~]# /usr/local/nagios/libexec/check_nrpe -H 10.1.1.254 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
CHECK_NRPE: Received 0 bytes from daemon.  Check the remote server logs for error messages.
[root@nagios ~]#

I did verify that the daemon is running on pfS.

Now I'm trying to view/find the logs on the pfSense side for NRPE.

Thanks for your patience. I make no claims to being good at anything in the Unix world.

AWS

[AWS]

Could it be an SSL issue? When I run:

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[2.0.1-RELEASE][[email protected]]/usr/local/libexec/nagios(12): ./check_nrpe2 -H 10.1.1.254 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
CHECK_NRPE: Error - Could not complete SSL handshake.

Then if I try to my Nagios server the same:

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[2.0.1-RELEASE][[email protected]]/usr/local/libexec/nagios(13): ./check_nrpe2 -H 10.1.1.4 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
Connection refused by host

Is my pfS (10.1.1.254) trying to SSL communicate with my Nagios (10.1.1.4) box and Nagios isn't configured for such? Is that what these messages are telling me?

Thanks
AWS

[scottwilkerson]

Could it be an SSL issue? When I run:

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[2.0.1-RELEASE][[email protected]]/usr/local/libexec/nagios(12): ./check_nrpe2 -H 10.1.1.254 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
CHECK_NRPE: Error - Could not complete SSL handshake.

Then if I try to my Nagios server the same:

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[2.0.1-RELEASE][[email protected]]/usr/local/libexec/nagios(13): ./check_nrpe2 -H 10.1.1.4 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
Connection refused by host

Is my pfS (10.1.1.254) trying to SSL communicate with my Nagios (10.1.1.4) box and Nagios isn't configured for such? Is that what these messages are telling me?

Thanks
AWS

Ok, you are making the connection the wrong way. From the Nagios machine you did it correct here:

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[root@nagios ~]# /usr/local/nagios/libexec/check_nrpe -H 10.1.1.254 -t 30 -c check_disk -a '-w 20% -c 10% -p /'
CHECK_NRPE: Received 0 bytes from daemon.  Check the remote server logs for error messages.
[root@nagios ~]#

but there was an error, that error was likeny that your pfs doesn't have a check_disk command...

Try this from the Nagios XI console

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cd /usr/local/nagios/libexec/
/check_nrpe -H 10.1.1.254 -c check_load