Ethercalc spec

We have been requested to run an ethercalc server for PTG time block
management. Make it so.

Change-Id: Iea1fad4abc95806aa7cbc2dbec9f72698526c529

doc/source/index.rst

@@ -38,6 +38,7 @@ permits.
    specs/complete-reviewable-release-automation
    specs/deploy-ci-dashboard
    specs/deploy-stackviz
+   specs/ethercalc
    specs/jenkins-job-builder_2.0.0-api-changes
    specs/neutral-governance-website
    specs/nodepool-launch-workers

specs/ethercalc.rst

@@ -0,0 +1,115 @@
+::
+
+  Copyright 2017 OpenStack Foundation
+
+  This work is licensed under a Creative Commons Attribution 3.0
+  Unported License.
+  http://creativecommons.org/licenses/by/3.0/legalcode
+
+..
+
+=========
+Ethercalc
+=========
+
+Include the URL of your StoryBoard story:
+
+https://storyboard.openstack.org/#!/story/2000839
+
+The PTG will have unconference like scheduled rooms/activities. It has been
+requested that we run an Ethercalc server to help facilitate the adhoc
+scheduling of these rooms. The spreadsheet setup makes it easy to track
+a matrix or rooms against times and Ethercalc's distributed editing feature
+makes it a good choice for the PTG.
+
+Problem Description
+===================
+
+Run an Ethercalc server to facilitate distributed scheduling of shared
+(real world) resources.
+
+Proposed Change
+===============
+
+We will deploy a new server, ethercalc01.openstack.org, using the puppet-nodejs
+and puppet-redis modules to install nodejs+npm from which we can install
+ethercalc. Ethercalc unlike etherpad does have a hard dependency on Redis so
+puppet-redis will be used to deploy a colocated Redis server.
+
+Alternatives
+------------
+
+We could use some on site physical scheduling medium. A common choice at
+unconferences is post it notes on a grid. White boards would also work.
+The trouble with these setups is that they are centralized to a physical
+location making it difficult for people not on site or in different areas to
+keep up with the current state.
+
+Implementation
+==============
+
+Assignee(s)
+-----------
+
+Primary assignee:
+  cboylan (clarkb)
+
+Gerrit Topic
+------------
+
+Use Gerrit topic "ethercalc" for all patches related to this spec.
+
+.. code-block:: bash
+
+    git-review -t ethercalc
+
+Work Items
+----------
+
+* Write puppet module for ethercalc
+* Write operational documentation in system-config
+* Deploy new server using new puppet module
+* Update DNS when service is ready
+* Announce service availability
+
+Repositories
+------------
+
+Will need to create puppet-ethercalc. An alternative would be to tack this
+on to the existing puppet-etherpad module as they are similar.
+
+Servers
+-------
+
+Need to create ethercalc01.openstack.org.
+
+DNS Entries
+-----------
+
+Need to create::
+
+  ethercalc01.openstack.org A $IPFROMCLOUD
+  ethercalc01.openstack.org AAAA $IPFROMCLOUD
+  ethercalc.openstack.org CNAME ethercalc01.openstack.org
+
+Documentation
+-------------
+
+Just docs related to the new service in the system-config docs.
+
+Security
+--------
+
+This should be low risk. The service will be completely isolated from all
+other services.
+
+Testing
+-------
+
+We will reuse existing puppet testing templates to ensure the module works.
+
+Dependencies
+============
+
+Will need new puppet-ethercalc repo. Note I have searched for an ethercalc
+module on puppetforge and found none.