title: Monitoring with Nagios disk - NRPE - Linux
body: <p>I am having a problem with respect to Nagios / NRPE service is as follows:</p>
  
  <p>I have done the configuration of each of the files, but does not recognize me nagios response delivered by NRPE on the client:</p>
  
  <p><strong>File: /etc/nagios/nrpe.cfg (client)</strong></p>
  
  <pre><code>command[check_users]=/usr/lib64/nagios/plugins/check_users -w 5 -c 10
  command[check_load]=/usr/lib64/nagios/plugins/check_load -w 15,10,5 -c 30,25,20
  command[check_disk]=/usr/lib64/nagios/plugins/check_disk -w 20% -c 10% -p /dev/mapper/VG_opt-LV_opt
  command[check_zombie_procs]=/usr/lib64/nagios/plugins/check_procs -w 5 -c 10 -s Z
  command[check_total_procs]=/usr/lib64/nagios/plugins/check_procs -w 150 -c 200
  </code></pre>
  
  <p><strong>File: services.cfg  (Servidor)</strong></p>
  
  <pre><code>define service{
    use                   generic-service
    host_name             192.168.160.10, 192.168.160.11, 192.168.160.12
    service_description   Disk Space
    notification_options w,u,c,r
    check_command         check_nrpe!check_disk
  }
  </code></pre>
  
  <p>Clearly I restarted the services on the client and server and other consultations via NRPE results are obtained, as the number of processes, CPU and RAM is the problem with check_disk.</p>
  
  <p><strong>The result obtained with the check_disk locally is:</strong></p>
  
  <pre><code>DISK OK - free space: /opt 34024 MB (76% inode=98%);| /opt=10522MB;37544;42237;0;46930
  </code></pre>
  
  <p><strong>Result via web</strong></p>
  
  <pre><code>Disk SpaceUNKNOWN    2014-09-26 09:18:31    0d 15h 52m 53s    4/4    (No output returned from plugin) 
  </code></pre>
  
  <p>it is even more strange when from the <strong>nagios server</strong> if I get results.</p>
  
  <pre><code>$ ./check_nrpe -H 192.168.160.10 -c check_disk
  DISK OK - free space: /opt 33389 MB (74% inode=98%);| /opt=11156MB;37544;42237;0;46930
  </code></pre>
  
  <p><strong>Vía Web:</strong></p>
  
  <pre><code>**(No output returned from plugin)**
  
  (No output returned from plugin)
  NRPE Plugin for Nagios
  Copyright (c) 1999-2008 Ethan Galstad (nagios@nagios.org)
  Version: 2.15
  Last Modified: 09-06-2013
  License: GPL v2 with exemptions (-l for more info)
  SSL/TLS Available: Anonymous DH Mode, OpenSSL 0.9.6 or higher required
  \nUsage: check_nrpe -H &lt;host&gt; [ -b &lt;bindaddr&gt; ] [-4] [-6] [-n] [-u] [-p &lt;port&gt;] [-t &lt;timeout&gt;] [-c &lt;command&gt;] [-a &lt;arglist...&gt;]
  \nOptions:
  -h = Print this short help.
  -l = Print licensing information.
  -n = Do no use SSL
  -u = Make socket timeouts return an UNKNOWN state instead of CRITICAL
  &lt;host&gt; = The address of the host running the NRPE daemon
  &lt;bindaddr&gt; = bind to local address
  -4 = user ipv4 only
  -6 = user ipv6 only
  [port] = The port on which the daemon is running (default=5666)
  [timeout] = Number of seconds before connection times out (default=10)
  [command] = The name of the command that the remote daemon should run
  [arglist] = Optional arguments that should be passed to the command. Multiple
  arguments should be separated by a space. If provided, this must be
  the last option supplied on the command line.
  \nNote:
  This plugin requires that you have the NRPE daemon running on the remote host.
  You must also have configured the daemon to associate a specific plugin command
  with the [command] option you are specifying here. Upon receipt of the
  [command] argument, the NRPE daemon will run the appropriate plugin command and
  send the plugin output and return code back to *this* plugin. This allows you
  to execute plugins on remote hosts and 'fake' the results to make Nagios think
  the plugin is being run locally.
  \n
  </code></pre>