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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => havana-3

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https://bugs.launchpad.net/bugs/1192774

Title:
  Fails to get metadata versions without X-Instance-Id when using
  quantum metadata proxy

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  I'm not sure this is bug or not, but it looks like.
  When I tries to get metadata service availability for health check with 'curl http://meta_service_ip:8775' , metadata service returns 400 error  with the message that X-Instance-ID is missing. (I enabled quantum metadta proxy)

  Looking at the related codes, I can see that the service returns
  available versions without X-Instance-ID checking if no additional
  path passed.

  nova/api/metadata/handler.py
  --------------------
  class MetadataRequestHandler(wsgi.Application):

      @webob.dec.wsgify(RequestClass=wsgi.Request)
      def __call__(self, req):
          if os.path.normpath("/" + req.path_info) == "/":
              return(base.ec2_md_print(base.VERSIONS + ["latest"]))
  --------------------

  But os.path.normpath("/" + req.path_info) returns "//" not "/" if I send request "http://meta_service_ip:8775"; or "http://meta_service_ip:8775/";.
  If I remove "/" from ("/" + req.path_info) it works fine and the service returns version correctly.

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