Nagios Support Forum

Posted: **Tue Jun 11, 2019 1:55 pm**

Hello Team,

I am trying to configure check_logfiles plugin to read specific pattern in one of my log file. The log files are generated on daily basis with the below naming convention under this path /var/log

--> bmessenger-YYYYMMDD.log

So how do I inform check_logfiles plugin to monitor only my latest log file ? Any help would be highly appreciated. I have looked at the documentation but I couldn't make anything there.

Below is the documentation.

--> https://labs.consol.de/nagios/check_logfiles/index.html

Posted: **Tue Jun 11, 2019 3:23 pm**

A config like this:

Code: Select all

@searches = (
  {
    logfile => '/var/log/bmessenger-$CL_DATE_YYYY$$CL_DATE_MM$$CL_DATE_DD$',
  },
);

and running the plugin like this:

Code: Select all

/usr/local/nagios/libexec/check_logfiles --config filename.cfg

will get you started. You'll need to add the extras like pattern(s) to search for, etc...

Posted: **Tue Jun 11, 2019 11:53 pm**

Hello cdienger,

Thank you for the reply. It is working fine.

Like to have one another clarification.

I have configured the service definition in this file '/usr/local/nagios/etc/objects/templates.cfg'

Code: Select all

define service{
  name                              mservice
  active_checks_enabled             1
  passive_checks_enabled            1
  parallelize_check                 1
  obsess_over_service               1
  check_freshness                   0
  notifications_enabled             1
  event_handler_enabled             1
  flap_detection_enabled            0
  process_perf_data                 1
  retain_status_information         1
  retain_nonstatus_information      1
  is_volatile                       1
  check_period                      24x7
  max_check_attempts                1
  check_interval                    3
  retry_interval                    2
  contact_groups                    admins
  notification_options              w,u,c
  notification_interval             60
  notification_period               24x7
  register                          0
}

And in this file '/usr/local/nagios/etc/objects/node.cfg'

Code: Select all

define service {
  use                   mservice
  host_name             jd.messenger.com
  service_description   check_logfiles
  check_command         check_logfiles
}

And in this file '/usr/local/nagios/etc/objects/commands.cfg'

Code: Select all

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

Is this the recommended approach? Or do we have a better way to define the service, command, host definitions? I am asking this because I have configured service definition in template.cfg file and used the service in node.cfg. Is there a way to configure it in a single file? If yes how?

Posted: **Thu Jun 13, 2019 3:12 pm**

You could configure all the settings form the template right in the service, but using a template can reduce a lot of work if you have many checks that use the same settings.

All of these can be put in a single file, as long as the file is included with directives in the nagios.cfg

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