[Bug 1573766] Re: Enable the paste filter HTTPProxyToWSGI by default

[Seyeong Kim]

** Also affects: nova (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: nova (Ubuntu)
     Assignee: (unassigned) => Seyeong Kim (xtrusia)

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https://bugs.launchpad.net/bugs/1573766

Title:
  Enable the paste filter HTTPProxyToWSGI by default

Status in OpenStack nova-cloud-controller charm:
  New
Status in OpenStack Compute (nova):
  Fix Released
Status in nova package in Ubuntu:
  New

Bug description:
  oslo middleware provides a paste filter that sets the correct proxy
  scheme and host. This is needed for the TLS proxy case.

  Without this then enabling the TLS proxy in devstack will fail
  configuring tempest because 'nova flavor-list' returns a http scheme
  in Location in a redirect it returns.

  I've proposed a temporary workaround in devstack using:

  +            iniset $NOVA_API_PASTE_INI filter:ssl_header_handler past
  e.filter_factory oslo_middleware.http_proxy_to_wsgi:HTTPProxyToWSGI.factory
  +            iniset $NOVA_API_PASTE_INI composite:openstack_compute_ap
  i_v21 keystone "ssl_header_handler cors compute_req_id faultwrap sizelimit autht
  oken keystonecontext osapi_compute_app_v21"

  But this isn't a long-term solution because two copies of the default
  paste filters will need to be maintained.

  See https://review.openstack.org/#/c/301172

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