---
features:
  - >
    [`bug 1641654 <https://bugs.launchpad.net/keystone/+bug/1641654>`_]
    The ``healthcheck`` middleware from `oslo.middleware` has been added to the
    keystone application pipelines by default. This middleware provides a common
    method to check the health of keystone. Refer to the example paste provided
    in ``keystone-paste.ini`` to see how to include the ``healthcheck`` middleware.
upgrade:
  - |
    [`bug 1641654 <https://bugs.launchpad.net/keystone/+bug/1641654>`_]
    The ``healthcheck`` middleware from `oslo.middleware` has been added to the
    keystone application pipelines by default. The following section has been
    added to ``keystone-paste.ini``::

      [filter:healthcheck]
      use = egg:oslo.middleware#healthcheck

    It is recommended to have the ``healthcheck`` middleware first in the pipeline::

      pipeline = healthcheck cors sizelimit http_proxy_to_wsgi osprofiler ...