= The External Check Datastore =

== External Check Overview ==

The configuration will list the external datastores that collectors can get data from.  In particular, the following URL is provided for a collector to get started at an external check datastore:


This call returns information about what checks are run by this external check store:

 * List of aggregate control planes this external check monitors
 * List of data plane experiments this external check has

{{{
https://externalcheckstore.gpolab.bbn.com/info/externalcheck/gpo
}}}


Here is an example response:

{{{
{
   "$schema": "http://www.gpolab.bbn.com/monitoring/schema/20140131/externalcheck#",
   "id": "gpo",
   "selfRef": "http://localhost:8088/info/externalcheck/gpo",
   "ts": 1397762559284773,
   "measRef: "http://localhost:8088/data/",
   "experiments": [
      {
         "href": "http://localhost:8088/info/experiment/missouri_ig_to_gpo_ig"
      }
   ],
   "monitored_aggregates": [
      {
         "id": "gpo-ig"
         "href": "https://datastore.instageni.gpolab.bbn.com/info/aggregate/gpo-ig"
      },
      {
         "id": "rci-eg"
         "href": "https://rci-hn.exogeni.net/ops-monitoring/info/aggregate/rci-eg"
      }
   ]
}
}}}

== The External Check Datastore part in Monitoring the Control and Data Planes ==
This page describes how monitoring data about more than one aggregate or about the control plane (reaching aggregates) is handled by the distributed operational monitoring architecture.
{{{
#!html
<table border="0" style="float:center">
  <tr>
       <td> <img src="http://groups.geni.net/geni/attachment/wiki/OperationalMonitoring/ExternalCheckStore/extck_store_cp_dp.png?format=raw" width="450" height="317"> </td>
  </tr>
  <caption align="bottom"> <b> Architectural Highlight of a Collector and a Local Datastore </b></caption>
</table>
}}}