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[John Dewey <john@xxxxxxxx>]

** Changed in: keystone
       Status: In Progress => Invalid

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https://bugs.launchpad.net/bugs/1338745

Title:
  Add healthcheck middleware

Status in OpenStack Identity (Keystone):
  Invalid

Bug description:
  Would be useful for keystone to support a healthcheck URL for
  consumption by load balancers.

  This middleware should provide the ability to manually disable the
  service via the existence of a file on the system's local disk.  This
  middleware should also perform a basic application functionality [1]
  check prior to reporting OK.

  Having this middleware would give us some flexibility around LB health
  checks we do not have today, and IMO would be beneficial.  This is
  fairly similar to what swift [2] is doing as well.

  [1] https://github.com/CiscoSystems/puppet-monit/blob/a459a7314ac4f0250ad8b9c6956a872b949840f1/files/healthcheck.py#L37
  [2] https://github.com/openstack/swift/blob/0b594bc3afbffe942edebe9cdf02f60c06e627ab/swift/common/middleware/healthcheck.py

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