nrpe problem

[Sukesh /IT/BLR/JIG/IN]

Thanks its working for me using -n (with out ssl option) ie, check_nrpe -H
<ip address> -c <command> -n

  _____  

From: narendran.neelamegam at wipro.com [mailto:narendran.neelamegam at wipro.com]

Sent: Friday, October 12, 2007 7:13 PM
To: sukesh.v at jigrahak.com; nagios-users at lists.sourceforge.net
Subject: RE: [Nagios-users] nrpe problem



Sukesh,

 

1.	Can you execute this command and also check if you have proper
version of nrpe running on both client and server. 

 

Without SSL

$./check_nrpe -H xxxxx -n

NRPE v2.9

 

With SSL

$./check_nrpe -H xxxxx 

NRPE v2.9

 

2.	Can you can run the nrpe command locally with check_nrpe 

 

./check_nrpe -H localhost -c command

 

3.	Can you see if the plugin are located as configured in the nrpe.cfg?


4.	Can you verify if nagios user has execute permission to run plugins?


 

Regards,

Narendan Neelamegam

 

  _____  

From: nagios-users-bounces at lists.sourceforge.net
[mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf Of
tom.welsh at bt.com
Sent: Friday, October 12, 2007 3:59 PM
To: sukesh.v at jigrahak.com; nagios-users at lists.sourceforge.net
Subject: Re: [Nagios-users] nrpe problem

 

Hi 

 

  _____  

From: Sukesh /IT/BLR/JIG/IN [mailto:sukesh.v at jigrahak.com] 
Sent: 12 October 2007 04:17
To: Welsh,T,Tom,DLS C
Subject: RE: [Nagios-users] nrpe problem

This is my remote host log messages

 

Oct 11 07:00:13 ngapps-prd xinetd[619]: START: nrpe pid=1767
from=192.168.1.84
Oct 11 07:00:15 ngapps-prd nrpe[1767]: Could not read request from client,
bailing out...
Oct 11 07:00:15 ngapps-prd xinetd[619]: EXIT: nrpe status=0 pid=1767
duration=2(sec)

 

  _____  

From: tom.welsh at bt.com [mailto:tom.welsh at bt.com] 
Sent: Thursday, October 11, 2007 6:07 PM
To: sukesh.v at jigrahak.com; nagios-users at lists.sourceforge.net
Subject: RE: [Nagios-users] nrpe problem

From: nagios-users-bounces at lists.sourceforge.net
[mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf Of Sukesh
/IT/BLR/JIG/IN
Sent: 11 October 2007 10:48
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] nrpe problem

Hi

Iam running nagios-3.0a4 and nrpe V2.8.1.iam not getting the result while
running ./check_nrpe -H <IP Address>. alreday no firewall is running behind
those servers .tried to put '-t' option also but didn't work.Still iam able
to telnet 5666 with out any problem/so please help him for this.(iam able to
access one server and client using nrpe daemon other could not)/

 

Thanks,

Sukesh .

 

Hi Sukesh,

>From reading your email i take it you can sucessfully connect to the remote
NRPE host via telnet.

   user2 at usel <mailto:user2 at usel> :~> telnet host1.somedomain.com 5666
   Trying xxx.xxx.xxx.199...
   Connected to host1.somedomain.com.
   Escape character is '^]'.

If this is correct then NRPE is accepting connections.

You said in the previous mail that NRPE is working correctly on one machine
but not on another. This sounds like you have some configuration differences
between the two boxes.

We really need to have more details to help you with this problem.

What OS is running on the two remote boxes?

Is it the same OS on both boxes.

Can you send snippets off your configuration THAT RELATE TO nrpe? NRPE.CFG.
SERVICES.CFG CHECKCOMMAND.CFG etc

Have you carried out the following

Turn on debugging on the remote host running nrpe and see what comes out in
the logs?

To do this edit your nrpe.cfg file and turn debugging on

debugging=1

An example off NRPE debugging turned on

Oct 11 13:30:01 host1 nrpe[3950]: Added
command[check_dns1]=/usr/local/nagios/libexec/check_dns -H www.teeks.org -w
1 -c 2
Oct 11 13:30:01 host1 nrpe[3950]: Added
command[check_swap]=/usr/local/nagios/libexec/check_swap -w 30% -c 20%
Oct 11 13:30:01 host nrpe[3950]: Added
command[check_ntp]=/usr/local/nagios/libexec/check_ntp -H xxx.xxx.xxx-t 15
Oct 11 13:30:01 host nrpe[3950]: INFO: SSL/TLS initialized. All network
traffic will be encrypted.
Oct 11 13:30:01 host nrpe[3950]: Handling the connection...

 

Hi Sukesh,

Please dont respond to me directly. Please respond via the mailing list.
Also please ost your reply comments at the bottom off teh email as it makes
it easier to read it in chronological order. Well enough off that spagetti,
back to your problem.

Your log extract

---------------<SNIP>---------------

Oct 11 07:00:13 ngapps-prd xinetd[619]: START: nrpe pid=1767
from=192.168.1.84
Oct 11 07:00:15 ngapps-prd nrpe[1767]: Could not read request from client,
bailing out...
Oct 11 07:00:15 ngapps-prd xinetd[619]: EXIT: nrpe status=0 pid=1767
duration=2(sec)
---------------<SNIP>--------------- 

This really does not tell me anything. I take it you have already goggled
for "nrpe + Could not read request from client, bailing out..." and found
the Nagios FAQ about this. It doset look like its your problem but I dont
know as you have provided only one piece off te information i asked for.

 

So here we go again.

 

1. 

>>"./check_nrpe -H <IP Address>. already no firewall is running behind those
servers .tried to put '-t' option also but didn't 

>>work."

 

Please paste the output off the above command when you run it against your
two hosts. I take it you are running the check_nrpe command as the user
nagios?

Here is an example that I ran on my nagios server connecting to one off my
remote NRPE boxes

 

        usel:~ # su - nagios

        nagios at usel:~> id
        uid=1001(nagios) gid=100(users) groups=100(users),1001(nagcmd)

 

        /usr/local/nagios/libexec/check_nrpe -H xxx.xxx.xxx.xxx -p 5666 -c
check_users
        USERS OK - 0 users currently logged in |users=0;5;10;0

 

2.

>>Still I am able to telnet 5666 with out any problem/

 

Please paste in the output off your telnet sessions to both boxes and the
syslog/messages output on the remote hosts like I have below.

 

       nagios at usel:~> telnet xxx.xxx.xxx.xxx 5666
       Trying xxx.xxx.xxx.xxx...
       Connected to xxx.xxx.xxx.xxx.
       Escape character is '^]'.

3.

>>so please help him for this.

 We will If you provide us with more information

 

4.

>> (iam able to access one server and client using nrpe daemon  other could
not)

Show us. Post your output above as host1( working) host2(non-working)

 

The problem is probably going to be related to differences between your two
remote nrpe hosts. To understand this you need to tell us what OS you are
running on the boxes and also other relevant information. Things like the
following

 

4.1 OS Version

      Host1 (working

      Host2 (non-working)

 

4.2 ./configure syntax used to create makefile

      Host1 (working

      Host2 (non-working)

 

4.3 SSL - is it installed on both boxes and is the development libs also
there. something like "rpm -qa | grep ssl" on a Redhat box would show you
what ssl related stuff you have installed

      Host1 (working

      Host2 (non-working)

 

 

If you provide the above info it is entirely possible that whilst going
through the steps to gather the info  you might actually "stumble" across
the cause off your problem.

 

I look forward to hearing back from you

 

Regards

 

Tom

 


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