The main extension of this fork is the addition of a Nagios prober which can be used to perform checks using any Nagios probe. It can be configured as follows:

modules:
  nagios_test:
    prober: nagios
    nagios:
      check: check_test
      args:
        - --host $target$
        - --something=42
      proxy_url: 'http://someproxy:80'
      treat_warnings_as_failure: true

The following values are supported for the nagios prober:

Value	Description	Default
`check`	The check name; the corresponding binary must either reside in the `checks` subdirectory or anywhere on the system's `PATH` environment variable.
`args`	An array of command-line arguments passed to the Nagios probe; see below for placeholders support.	`[]`
`proxy_url`	An optional proxy URL to use; note that this only sets corresponding environment variables internally (`HTTP_PROXY`, `HTTPS_PROXY`, etc.), so the Nagios probe needs to utilize these.
`treat_warnings_as_failure`	The Blackbox Exporter reports whether a check succeeded in the `probe_succes` metric; if this setting is set to `true`, a Warning result will be treated as an unsuccessful check.	`false`

Argument placeholders

Placeholders in arguments passed to the Nagios probe via the args value have the form $name$ :

args:
  - --host $target$

The following standard placeholders are supported:

Placeholder	Description
`target`	The full host name that should be used as the Nagios probe's target.
`target_host`	If the target is a URL, this contains the host name of that URL.
`target_port`	If the target is a URL, this contains the host port of that URL.
`target_scheme`	If the target is a URL, this contains the scheme of that URL.
`target_path`	If the target is a URL, this contains the path of that URL.
`target_base`	If the target is a URL, this contains the scheme plus host name of that URL.
`testclient_id`	The ID of the site-specific test client.
`testclient_secret`	The secret of the site-specific test client.

Any additional parameters passed by URL can also be used as placeholders:

http://blackbox.example.com/probe?module=nagios_test&target=google.com&my_param=123

The custom parameter my_param can then be accessed as $my_param$ in the probe arguments.

Also note that placeholder names are not case-sensitive.