Add migrate askbot to infra spec

Spec for migration of ask.openstack.org into infra repositories.
Notice: story-id will be updated when storyboard works again.

Change-Id: If9e27eec9dd84dc8a9b975c66d71e20037a48f8b
Story: 2000158

specs/migrate_askbot.rst

@@ -0,0 +1,120 @@
+::
+
+  Copyright 2015 OpenStack Foundation
+
+  This work is licensed under a Creative Commons Attribution 3.0
+  Unported License.
+  http://creativecommons.org/licenses/by/3.0/legalcode
+
+==================================
+Migrate ask.openstack.org to infra
+==================================
+
+https://storyboard.openstack.org/#!/story/2000158
+
+The OpenStack Q&A site located at ask.openstack.org currently
+running in an instance deployed by a third-party. The main
+goal of this migration to make the entire deployment process
+repeatable, and move the project to proper infrastructure
+puppet repositories.
+
+Problem Description
+===================
+
+The ask.openstack.org site was deployed manually and contains
+the minimal application stack required for running the site.
+Currently the site is missing regular backups, security
+updates and deployment documentation.
+
+Proposed Change
+===============
+
+Create the missing puppet modules, prepare the changes in
+openstack-infra/system-config repo.
+
+Alternatives
+------------
+
+Leave ask.openstack.org as is.
+
+Implementation
+==============
+
+Assignee(s)
+-----------
+
+Primary assignee:
+  marton-kiss
+
+Gerrit Topic
+------------
+
+Use Gerrit topic "askbot-site" for all patches related to this spec.
+
+.. code-block:: bash
+
+    git review -t askbot-site
+
+Work Items
+----------
+
+* Lower ask.openstack.org DNS TTL to 300
+* Create puppet-askbot split-out module
+* Add vamsee-solr module and puppet-askbot to modules.env
+* Make the system-config changes, add ask.pp
+* Add SSL certificates and passwords to hiera
+* Launch new ask.openstack.org server
+* Restore database and static files from original ask.openstack.org site
+* Silent testing with /etc/hosts override
+* Backup / restore of original ask.openstack.org data
+* Update DNS entry of ask.openstack.org with the new server address
+* Redirect html traffic using nginx to new ask.openstack.org to avoid db sync issues
+* Restore ask.openstack.org DNS TTL to 3600
+
+Repositories
+------------
+
+A new puppet-askbot repository will need to be created, along with updates to
+system-config to consume this module.
+
+Servers
+-------
+
+An ask.openstack.org will need to be created.
+
+DNS Entries
+-----------
+
+The ask.openstack.org zone must be point to the newly created server as the
+last step of this migration process.
+
+Documentation
+-------------
+
+Askbot documentation need to be added to ci.openstack.org documentation.
+
+Security
+--------
+
+The services will run on Ubuntu, so core operating system not requires any
+special attention.
+
+The application stack have some elements that must be deployed from
+tar.gz or pypy instead of OS packages:
+
+* Apache Solr (4.7.2)
+* askbot
+
+Testing
+-------
+
+Askbot don't have integration tests implemented. After instance creation
+and initial data migration, I suggest to do a 1-2 week long silent test
+of the UI and address upcoming bugs during that period.
+
+Dependencies
+============
+
+We are using vamsee-solr module 0.0.7 from puppetforge, and it is forcing
+Us to use solr 4.7.2 because 4.10.x requires some extra patches to work and
+this upgrade also means a schema change.