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messagehub071.md

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copyright lastupdated
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2015, 2017
2017-02-07

{:new_window: target="_blank"} {:shortdesc: .shortdesc} {:screen: .screen} {:codeblock: .codeblock} {:pre: .pre}

VCAP_SERVICES environment variable

{: #vcap}

When your application is bound to the {{site.data.keyword.messagehub}} service, details of the service are stored in JSON format in the VCAP_SERVICES environment variable for your app. Here is an example:

{
  "credentials": {
    "mqlight_lookup_url": "https://mqlight-lookup.messagehub.services.us-south.bluemix.net/Lookup?serviceId=584e8436-e7f5-43db-96ac-2864fccae5ae",
    "api_key": "d9JSx1SYsmLzNRbbgUFneDm2DtkedlVeViObYJIvrPAf2kJA",
    "kafka_admin_url": "https://kafka-admin.messagehub.services.us-south.bluemix.net:443",
    "kafka_rest_url": "https://kafka-rest.messagehub.services.us-south.bluemix.net:443",
    "kafka_brokers_sasl": [
      "kafka01.messagehub.services.us-south.bluemix.net:9093",
      "kafka02.messagehub.services.us-south.bluemix.net:9093",
      "kafka03.messagehub.services.us-south.bluemix.net:9093",
      "kafka04.messagehub.services.us-south.bluemix.net:9093",
      "kafka05.messagehub.services.us-south.bluemix.net:9093"
    ],
    "user": "d9JSx1SYsmLzNRbb",
    "password": "gUFneDm2DtkedlVeViObYJIvrPAf2kJA"
  }
}

{: codeblock}

The environment variable's content is the same, regardless of the API that you use to connect to {{site.data.keyword.messagehub}}. Your {{site.data.keyword.Bluemix_notm}} app selects the appropriate credentials from the VCAP_SERVICES environment variable, depending on the interface in use.