Create rhosp_director_glance_image_cache.rst

Author: sdodsley

source/glance/rhosp_director_glance_image_cache.rst

@@ -0,0 +1,46 @@
+Implementing Glance Image Cache for Cinder in Red Hat OpenStack Platform
+========================================================================
+
+.. _glance_cache_rhosp:
+
+Overview
+--------
+
+This section should be used in conjunction with `Deploying Pure Storage FlashArray
+Cinder driver in a Red Hat OpenStack Platform <../cinder/configuration/cinder_config_files/section_rhosp162_director_flasharray_configuration.html>`__.
+
+.. note::
+
+  For more information about RHOSP, please refer to its `documentation pages
+  <https://access.redhat.com/documentation/en-us/red_hat_openstack_platform>`_.
+
+Deployment Steps
+----------------
+
+Prepare the environment files
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+RHOSP makes use of **TripleO Heat Templates (THT)**, which allows you to define
+the Overcloud resources by creating environment files.
+
+To ensure that your RHOSP environment is correctly configured to use Glance
+Image Cache on Pure Storage FlashArrays edit your version of `cinder-pure-config.yaml <https://raw.githubusercontent.com/PureStorage-OpenConnect/tripleo-deployment-configs/master/RHOSP16.2/cinder-pure-config.yaml>`__
+and add the following information:
+
+.. code-block:: yaml
+    :name: custom-config.yaml
+    parameter_defaults:
+      ControllerExtraConfig:
+        cinder::config::cinder_config:
+          DEFAULT/cinder_internal_tenant_project_id:
+            value: PROJECT_ID
+        cinder::config::cinder_config:
+          DEFAULT/cinder_internal_tenant_user_id:
+            value: USER_ID
+This will render the required parameters in the ``cinder.conf`` file as:
+
+.. code-block::
+    :name: cinder.conf
+    [DEFAULT]
+    cinder_internal_tenant_project_id=PROJECT_ID
+    cinder_internal_tenant_user_id=USER_ID