NRPE Error

[noodle48]

I have an AIX client using NRPE daemon and a Nagios server on Redhat 6.3.

I install the nrpe daemon on AIX server and I issue the check_nrpe -H nagios server and get the version info back but when I issue the same check_npre -H AIX host I get this error:
CHECK_NRPE: Response packet had invalid CRC32.

Has anyone seen this before and if so how do I fix it.

Thanks

[nscott]

I found this post:

http://osdir.com/ml/network.nagios.deve ... 00004.html

Perhaps defining your NRPE commands to pipe STDERR to /dev/null/ might be a fix.

[noodle48]

And where to I define this command? Under the check_nrpe file or under xientd.d/nrpe ?

[slansing]

You would add to to commands in the commands.cfg file, that is found at:

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/usr/local/nagios/etc/objects/commands.cfg

[noodle48]

Okay....

define command{
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}

Current config, do I need to add > /dev/null or is there a certain syntax I need to follow?

[nscott]

The actual location of the file you need to edit depend on how you installed NRPE. The RPM installation has the nrpe.cfg (not the xinetd.d nrpe file) at /etc/nagios/nrpe.cfg, source installs will probably put it at /usr/local/nagios/etc/nrpe.cfg. Go to the very bottom of this file, and you should see something like this:

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# The following examples use hardcoded command arguments...

#command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10
#command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20
#command[check_hda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/hda1
#command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z
#command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 150 -c 200

However, these are probably uncommented. You'll need to tag an 2>&- onto all of them, this reroutes stderr to nothing:

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command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10 2>&-

The above changes the check_users only, so try that on check_users, or whatever check is giving your grief, and if it takes care of the CRC error, then apply it to all of them.

[noodle48]

This option still didn't help my problem. Any other ideas?