Skyline: use an external object store (Swift) in the dashboard

Change-Id: I0247877c245f12994ffab983a624844e1238de9b

ansible/roles/skyline/defaults/main.yml

@@ -196,3 +196,9 @@ skyline_enable_tls_backend: "{{ kolla_enable_tls_backend }}"
 # Custom logos: files and folders will be copied to static folder
 ####################
 skyline_custom_logos: []
+
+####################
+# External Swift: url of external Swift service, e.g. when running standalone Ceph
+####################
+skyline_external_swift: "no"
+skyline_external_swift_url: ""

ansible/roles/skyline/templates/nginx.conf.j2

@@ -308,6 +308,16 @@ http {
             proxy_set_header X-Forwarded-Host $host;
             proxy_set_header Host $http_host;
         }
+        {% elif skyline_external_swift | bool %}# Region: {{ openstack_region_name }}, Service: external swift
+        location {{ skyline_nginx_prefix }}/{{ openstack_region_name | lower }}/swift {
+            proxy_pass {{ skyline_external_swift_url }};
+            proxy_redirect {{ skyline_external_swift_url }} {{ skyline_nginx_prefix }}/{{ openstack_region_name | lower }}/swift/;
+            proxy_buffering off;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-Host $host;
+            proxy_set_header Host $http_host;
+        }
         {% endif %}
     }
 }

ansible/roles/skyline/templates/skyline.yaml.j2

@@ -74,7 +74,7 @@ openstack:
 {% if enable_neutron | bool %}
     network: neutron
 {% endif %}
-{% if enable_swift | bool or enable_ceph_rgw | bool %}
+{% if enable_swift | bool or enable_ceph_rgw | bool or skyline_external_swift | bool %}
     object-store: swift
 {% endif %}
 {% if enable_heat | bool %}

doc/source/reference/shared-services/skyline-guide.rst

@@ -81,3 +81,18 @@ To replace all use
 Since the files are overwritten inside the container, you have to remove the
 container and recreate it if you want to revert to the default logos. Just
 removing the configuration will not remove the files.
+
+External Swift
+~~~~~~~~~~~~~~
+
+If you are running an external Swift compatible object store you can add
+it to the skyline dashboard. Since Skyline can not use Keystone's
+endpoint api, you have to tell it the url of your external service.
+
+You have to set ``skyline_external_swift`` and
+``skyline_external_swift_url`` in your configuration:
+
+.. code-block:: yaml
+
+   skyline_external_swift: "yes"
+   skyline_external_swift_url: "https://<your-host>/swift"

releasenotes/notes/skyline-external-swift-d9e38f696a22c117.yaml

@@ -0,0 +1,9 @@
+---
+features:
+  - |
+    Setup Skyline to show resources from an external object store in the
+    dashboard. If you run an external Swift compatible object store you
+    have to tell Skyline about it as it can not use Keystone's endpoint
+    api to determine that at runtime. See the reference
+    `documentation <https://docs.openstack.org/kolla-ansible/latest/reference/shared-services/skyline-guide.html#external-swift>`__
+    for details.