Using Nagios check_log command doesn't work - nagios

Question

Firstly, sorry for my english.
I try to configure a probe in nagios for monitor log files and notify me when Nagios find string like "Exception" or "Error".
I use Nagios with Centreon.
So, when I execute my command :
$USER1$/check_log -F path/for/log.files -q /Exception/
Nagios return : "Log check error: Log file path/for/log.files does not exist!"
When i check in my server the path, the files exists, all (root, group and other) can read the file. So the problem doesn't seem to come of rights management.
The client for supervisor is a CentOS. I have already install nrpe client, and configure allowed host etc ...
I looked everywhere for someone who had the same error but find nothing.
If someone can help me, it would be so nice !
If you need further informations for help me, please, don't hesitate, i'm not sur that i'm explain in good way my problem.
Regards.

Answer 1

On Nagios server side, you must define something like this:
define service {
service_description service_name
host_name your_remote_hostname
use your_template
check_command ext_check!check_log!-f path/for/log.files -g /Exception/
}
In commands.cfg or in similar file on Nagios server:
define command{
command_name ext_check
command_line $USER1$/check_nrpe -t 30 -H $HOSTADDRESS$ -p 5666 -c $ARG1$ -a $ARG2$
}
On client/monitored host you must edit nrpe.cfg file:
command[check_log]=/opt/nagios/plugins/check_log $ARG1$
after that, you must restart nrpe service and reload Nagios configuration.