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+..  This work is licensed under a Creative Commons Attribution 3.0 Unported
+    License.
+    http://creativecommons.org/licenses/by/3.0/legalcode
+
+=====================
+Local Docker Registry
+=====================
+
+Storyboard: https://storyboard.openstack.org/#!/story/2002840
+
+A local Docker registry should be included in a StarlingX containerized
+deployment to allow users to store Docker images that they might not want
+to share publicly through Docker Hub.
+
+Problem Description
+===================
+
+Without the local Docker registry, the only way to obtain Docker images is
+through public means, such as Docker Hub. Users of StarlingX might have images
+that they do not want to publicly share. Docker Hub might also not meet the
+users' performance requirements. Deploying a local Docker registry allows the
+user to deploy custom images without uploading it to Docker Hub first.
+
+Use Cases
+=========
+
+End users and StarlingX administrators can push and deploy images from the
+local registry without publicly sharing them on Docker Hub.
+
+Proposed change
+===============
+
+An instance of the Docker Distribution project would be integrated on
+StarlingX:
+https://github.com/docker/distribution
+
+Docker Distribution (Docker Registry) shall be deployed in StarlingX, managed
+by STX-HA's SM in active standby mode. The registry process shall be running
+as a host process as opposed to a container. Docker Distribution shall use a
+resizable DRBD synced file system as its root directory.
+
+The registry will be deployed with token authentication. A token server shall
+be deployed as well, and managed by SM, running in active standby mode. The
+token server will use Openstack Keystone as a back end, and allow users to log
+in using their Openstack credentials to work with Docker images in the
+registry. The token server shall provide minimal authorization support where
+users shall only be allowed to modify resources belonging to their own repo.
+For example, user1 shall not be allowed to push user2/testimage:v1.0.
+
+Alternatives
+============
+
+Docker registry shall be deployed as a host process as opposed to a container.
+This allows the registry to hold kube-system container images for starting up
+Kubernetes itself in the future if needed.
+
+Data model impact
+=================
+
+None
+
+REST API impact
+===============
+
+None
+
+Security impact
+===============
+
+Docker registry shall run on port 9001 while the registry token server shall
+run on port 9002. Authentication and authorization are done through Keystone,
+so no credentials need to be stored on the Docker registry or token server
+side. Communications between the registry, Docker client, and registry token
+server will be through HTTPS by default, using the system self-signed
+certificate by default. All communication is done over the management network.
+
+Other end user impact
+=====================
+
+None
+
+Performance Impact
+==================
+
+None
+
+Other deployer impact
+=====================
+
+None
+
+Developer impact
+=================
+
+None
+
+Upgrade impact
+===============
+
+None
+
+Implementation
+==============
+
+Assignee(s)
+===========
+
+Primary assignee:
+  jerry-sun-u
+
+Repos Impacted
+==============
+
+ * stx-integ
+ * stx-config
+ * stx-ha
+
+Work Items
+===========
+
+Build, configure, and manage through STX-HA's SM, the Docker registry process.
+Build, configure, and manage through SM, a token server that can communicate
+with Openstack Keystone and can act as an authentication and authorization
+service for the Docker registry.
+
+Dependencies
+============
+
+Docker Distribution and its dependencies
+SM from stx-ha
+
+Testing
+=======
+
+Docker Distribution comes with its own unit tests. The token server can be
+tested by doing a deployment on StarlingX. Specifically, ensure that one
+user cannot delete images from another user.
+
+For now, Docker registry and token server processes should be run only if
+kubernetes is configured during config controller.
+
+Documentation Impact
+====================
+
+None
+
+References
+==========
+
+None
+
+History
+=======
+
+.. list-table:: Revisions
+         :header-rows: 1
+
+   * - Release Name
+     - Description
+   * - 2019.03
+     - Introduced
+
+