How do I run the discussion forums in devstack?

run LMS and CMS
vagrant ssh
sudo su forum
git pull to get most recent version of cs_comments_service master branch
If necessary, run a migration (see migration steps below).
run the following commands
```
bundle install # this should only be needed once
API_KEY=password bundle exec rackup -o 0.0.0.0 -p 18080 # this command needs to be run every time you need discussions
```
1. See https://github.com/edx/configuration/wiki/edX-Developer-Stack#forums--ruby-issues if having problem problems with missing Ruby gems (via bundle install).
2. Use "ruby app.rb -p 18080" if rackup is not working, but this will not cache mongo results and should not be used for performance work.

How do I run a database migration on the cs_comments_service in devstack?

This is an example for a specific migration script:

mongo cs_comments_service_development scripts/db/migrate-007-thread-type.js

How do I run and debug unit tests for the comments service (ruby code)?

Debugging Ruby Comments Service

How do I enable cohorts?

See Internal Cohort Documentation

and/or https://docs.google.com/document/d/1o7S79mLilcRfJ2E6cILcfVOTBb8-m_CNXi7K_yiWE88/edit

Then add your course author as a forum admin or moderator so that they can see all cohorts (via LMS instructor dashboard).

Note that posts created BEFORE cohorts are enabled will be visible to all cohorts. Therefore it is necessary to create users in the various cohorts and create new posts within cohorted topics to see that cohorting is working.

How do I use MathJax in discussion posts?

See https://courses.edx.org/courses/edX/DemoX.1/2014/wiki/edX.DemoX.1.2014/math-formatting-course-discussions/

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