Upgrade 2015 Mjolnir

Software Requirements

Python (Already set up in /software)
Ruby + Rubygems (Already set up in /software)
Sandstorm Requirements
- Swap to CLANG as the primary compiler
  - Clang compiler version 3.4 or better
- Upgraded Kernel
  - Linux x86_64, with kernel version 3.13 or later
Swap to Nginx?

Service Requirements

In decreasing order of priority:

Wordpress
GIT (and GitLab)
ShareLatex

Webserver

Apache is probably good enough, but many web-apps seem to only support Nginx. Would it be possible to install both so that we can start with Apache and then possibly transition over to Nginx at some point in the future?

Postgres

Data Directory: /data/pgdata
Start/Stop: init.d
Test: psql should return DATABASE MISSING or ACCESS DENIED

GitLab relies on Postgres, as do several less critical services.

MySql

Data Directory: [system default] (/var/lib/mysql)
Start/Stop: init.d
Test: mysql should return ACCESS DENIED

Wordpress (the lab website) relies on Mysql. It would be nice if the data directory got moved to /data so that it got backed up properly.

MongoDB

Data Directory: /data/mongodb
Start/Stop: init.d
Test: mongo should connect you to 'test'

MongoDB will be getting phased out in favor of using Sandstorm-based services, but it would be nice to have it available as a backup or during the transition phase to ensure that services that rely on it can be safely moved over.

Redis

Data Directory: n/a (redis is not a persistent data store)
Start/Stop: init.d
Test: redis-cli should open up a shell.

Redis will be getting phased out in favor of using Sandstorm-based services, but it would be nice to have it available as a backup or during the transition phase to ensure that services rely on it can be safely moved over.

Wordpress

Data Directory: [MySql] and /var/www/html/
Start/Stop: Automatically served by Apache
Test: http://odin.cse.buffalo.edu/
Depends On: Apache, Mysql

Wordpress is mission critical.

ShareLaTeX

Data Directory: /data/sharelatex
User: sharelatex
Start/Stop: Manual management using ~sharelatex/start_all.sh (super finicky setup...)
Test: http://latex.odin.cse.buffalo.edu/
Depends On: MongoDB, Redis

ShareLatex is not mission critical, and will be moving over to Sandstorm. However, it would be useful to have a useable install of ShareLaTeX during the transition period.

GitLab

Data Directory: /data/git
User: git
Start/Stop: init.d
Test: http://odin.cse.buffalo.edu/gitlab
Depends On: MongoDB, Redis

GitLab is mission critical. It will be moving over to Sandstorm, but it is essential that GitLab be available in the interim.

GIT

Data Directory: /data/git
User: git
Start/Stop: [Runs over SSHD]
Test: git clone git@mjolnir.cse.buffalo.edu:odin-lab/documentation.git should say "Warning, cloned an empty repository"
Depends On: GitLab

GIT runs over SSHD ~/.ssh/authorized_keys as an improvised ACL. This file is managed by GitLab, and uses a program called gitlab-shell to actually implement access control.