Nagios output pluginedit

  • Plugin version: v3.0.6
  • Released on: 2018-04-06
  • Changelog

For other versions, see the Versioned plugin docs.

Getting Helpedit

For questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github. For the list of Elastic supported plugins, please consult the Elastic Support Matrix.


The Nagios output is used for sending passive check results to Nagios via the Nagios command file. This output currently supports Nagios 3.

For this output to work, your event must have the following Logstash event fields:

  • nagios_host
  • nagios_service

These Logstash event fields are supported, but optional:

  • nagios_annotation
  • nagios_level (overrides nagios_level configuration option)

There are two configuration options:

  • commandfile - The location of the Nagios external command file. Defaults to /var/lib/nagios3/rw/nagios.cmd
  • nagios_level - Specifies the level of the check to be sent. Defaults to CRITICAL and can be overriden by setting the "nagios_level" field to one of "OK", "WARNING", "CRITICAL", or "UNKNOWN"

          if [message] =~ /(error|ERROR|CRITICAL)/ {
            nagios {
              # your config here

Nagios Output Configuration Optionsedit

This plugin supports the following configuration options plus the Common Options described later.

Setting Input type Required





string, one of ["0", "1", "2", "3"]


Also see Common Options for a list of options supported by all output plugins.



  • Value type is string
  • Default value is "/var/lib/nagios3/rw/nagios.cmd"

The full path to your Nagios command file.


  • Value can be any of: 0, 1, 2, 3
  • Default value is "2"

The Nagios check level. Should be one of 0=OK, 1=WARNING, 2=CRITICAL, 3=UNKNOWN. Defaults to 2 - CRITICAL.

Common Optionsedit

The following configuration options are supported by all output plugins:

Setting Input type Required











  • Value type is codec
  • Default value is "plain"

The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output without needing a separate filter in your Logstash pipeline.


  • Value type is boolean
  • Default value is true

Disable or enable metric logging for this specific plugin instance. By default we record all the metrics we can, but you can disable metrics collection for a specific plugin.


  • Value type is string
  • There is no default value for this setting.

Add a unique ID to the plugin configuration. If no ID is specified, Logstash will generate one. It is strongly recommended to set this ID in your configuration. This is particularly useful when you have two or more plugins of the same type. For example, if you have 2 nagios outputs. Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.

output {
  nagios {
    id => "my_plugin_id"

Variable substitution in the id field only supports environment variables and does not support the use of values from the secret store.