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-rw-r--r--doc/source/middlewarearchitecture.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/source/middlewarearchitecture.rst b/doc/source/middlewarearchitecture.rst
index e9ec7c8..b613805 100644
--- a/doc/source/middlewarearchitecture.rst
+++ b/doc/source/middlewarearchitecture.rst
@@ -177,6 +177,11 @@ when ``auth_plugin`` is set to ``password``.
auth_url = http://127.0.0.1:35357
# Any of the options that could be set in api-paste.ini can be set here.
+If using an ``auth_plugin``, connection to the Identity service will be
+established on the ``admin`` interface as registered in the service catalog.
+In the case where you are using an ``auth_plugin`` and have multiple regions,
+also specify the ``region_name`` option to fetch the correct endpoint.
+
If the service doesn't use the global oslo.config object (CONF), then the
oslo config project name can be set it in paste config and
keystonemiddleware will load the project configuration itself.