Nagios Support Forum

Posted: **Fri Jan 24, 2014 2:59 pm**

I've attached the output of ls -la

I checked the paths for the commands, they all point to /use/lib/nagios/plugins (same as on my 32-bit system)

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command[check_users]=/usr/lib/nagios/plugins/check_users -w 5 -c 10
command[check_load]=/usr/lib/nagios/plugins/check_load -w 15,10,5 -c 30,25,20
command[check_hda1]=/usr/lib/nagios/plugins/check_disk -w 20% -c 10% -p /dev/hda1
command[check_zombie_procs]=/usr/lib/nagios/plugins/check_procs -w 5 -c 10 -s Z
command[check_total_procs]=/usr/lib/nagios/plugins/check_procs -w 150 -c 200 
 
 
# The following examples allow user-supplied arguments and can
# only be used if the NRPE daemon was compiled with support for 
# command arguments *AND* the dont_blame_nrpe directive in this
# config file is set to '1'.  This poses a potential security risk, so
# make sure you read the SECURITY file before doing this.
 
#command[check_users]=/usr/lib/nagios/plugins/check_users -w $ARG1$ -c $ARG2$
#command[check_load]=/usr/lib/nagios/plugins/check_load -w $ARG1$ -c $ARG2$
command[check_disk]=/usr/lib/nagios/plugins/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$
#command[check_procs]=/usr/lib/nagios/plugins/check_procs -w $ARG1$ -c $ARG2$ -s $ARG3$

I also made sure that check_init_service existed, which it does:

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$ pwd
/usr/lib/nagios/plugins
$ ls -lah check_init_service 
-rwxr-xr-x 1 root root 4.0K Feb  5  2013 check_init_service

Posted: **Fri Jan 24, 2014 3:08 pm**

Can you run the check from the cli as user "nagios"? Additionally, have you restarted nrpe on the remote system after you changed the nrpe.cfg?
Lets see if nrpe works at all - on the nagios server, run:

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./check_nrpe -H <remote host IP>

You should get version output.

Posted: **Mon Jan 27, 2014 6:40 am**

NRPE has been restarted since the changes were made.

I have other monitoring working on this host. Disk, load, open files, ping, swap, total processes, and users checks are all working fine. Its just Cron Scheduling Daemon, SSH server and System Logging Daemon that aren't working.

Here is the output of the command you wanted, as the nagios user.

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[nagios@nagiosxi libexec]$ ./check_nrpe -H 10.22.172.21
NRPE v2.12

Posted: **Mon Jan 27, 2014 11:25 am**

check_init_service is not defined in your nrpe.cfg. Add the following to the remote host's nrpe.cfg:

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command[check_init_service]=/usr/lib/nagios/plugins/check_init_service $ARG1$

And then restart the nrpe service on the remote host.

Posted: **Mon Jan 27, 2014 11:37 am**

abrist wrote:check_init_service is not defined in your nrpe.cfg. Add the following to the remote host's nrpe.cfg:
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command[check_init_service]=/usr/lib/nagios/plugins/check_init_service $ARG1$
And then restart the nrpe service on the remote host.

check_init_service is defined. I specifically stated that I added it in this post as well as copied the excerpt from my nrpe.cfg in this post.

Whats odd is several other hosts appear to be working without having that line added to the remote host.

Posted: **Mon Jan 27, 2014 12:11 pm**

Is there a chance that the agent was installed twice on this system? (once from the agent install script, and once from a repo)

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apt-get install mlocate
updatedb
locate nrpe.cfg

Posted: **Mon Jan 27, 2014 12:53 pm**

Only installed once.

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$ find / -name nrpe.cfg
/etc/nagios/nrpe.cfg
$

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$ mlocate nrpe.cfg
/etc/nagios.nrpe.cfg
$

I could try removing and reinstalling the package via apt or dpkg if you think that might help. Here is what is currently installed:

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$ dpkg --get-selections | grep nagios
libnagios-plugin-perl                           install
nagios-agent                                    install
nagios-nrpe-server                              install
nagios-plugins                                  install
nagios-plugins-basic                            install
nagios-plugins-standard                         install
nagios-snmp-plugins                             install

Posted: **Mon Jan 27, 2014 1:56 pm**

Well, this is strange. NRPE should log to the system messages. Can you get a healthy tail of them on the remote host?

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tail -25 /var/log/messages

Posted: **Tue Jan 28, 2014 6:56 am**

Oddly enough, there are no entries for NRPE other than when I restarted the service to see if that would affect anything. I checked /var/log/syslog

Might there be another location that nagios would log to? I was under the impression that everything went into syslog.

Posted: **Tue Jan 28, 2014 11:17 am**

jdev wrote:Oddly enough, there are no entries for NRPE other than when I restarted the service to see if that would affect anything. I checked /var/log/syslog

Just to clarify, you are checking the logs on the remote system, correct?

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