Ansible Unicorn/rbenv setup

This Ansible role installs a service for Unicorn, with rbenv and multiple application support

Requirements

Expects rbenv to be installed system-wide

Role Variables

rbenv_root defaults to /usr/local/rbenv
rbenv_exe defaults to /usr/local/rbenv/bin/rbenv
rails_apps defaults to []

Each rails_apps entry is a dict with the following options
- name (eg my_app, required)
- ruby_version (eg ruby-2.1.1, required)
- env defaults to production
- root defaults to /var/www/{{ name }}/current (Capistrano compatible)
- config is used for db and secrets, defaults to {{ root }}/config if root is specified, otherwise to /var/www/{{ name }}/shared/config
- db is a dict for generating a database.yml file, with options:
  - adapter defaults to postgresql
  - host defaults to localhost
  - database defaults to app name
  - username defaults to app name
  - password defaults to app name
  - pool defaults to 5
  - timeout defaults to 5000
- secrets is a dict and all its keys are converted to secrets.yml

Example Playbook

The role could be included in a playbook as follows:

---
-hosts: application
  roles:
    - role: unicorn-rbenv
      rails_apps:
        - { name: 'my_app1', ruby_version: 'ruby-1.9.3' }
        - { name: 'my_app2', ruby_version: 'ruby-2.1.1', root: '/var/test_apps/app2', env: staging }
        - name: 'my_app3'
          ruby_version: 'ruby-2.1.1'
          db:
            password: topsecret
          secrets:
            secret_key_base: SuperSecretHexString

If the init script is called without any config parameters, it will attempt to run the init command for all unicorn configurations listed in /etc/unicorn/*.conf

/etc/init.d/unicorn start # starts all unicorns

If you specify a particular config, it will only operate on that one

/etc/init.d/unicorn start my_app

Notes

This role does not deploy the actual application, it assumes that this will be done in another role or using a deployment tool such as Capistrano.

If you use this role to generate database.yml and secrets.yml, it is advised to store the keys in an ansible vault file

License