A simple rc.d script for running multiple Rails apps using unicorn and bundler on FreeBSD.

#Features

• Run the rails apps as unprivileged system users
• Run multiple rails apps using one rc.d script
• The rails app is run using bundle exec unicorn

#Quick setup

Copy the unicorn file to /usr/local/etc/rc.d and mark it as executable using chmod a+x unicorn.

Edit your rc.conf. In this example, we'll add a Redmine and a GitLab installation:

unicorn_enable="YES"
unicorn_children="redmine gitlab"

#redmine
unicorn_redmine_enable="YES"
unicorn_redmine_directory="/var/www/redmine/redmine-2.5.2"
unicorn_redmine_config="/var/www/redmine/unicorn.rb"
unicorn_redmine_user="redmine"

#gitlab
unicorn_gitlab_enable="YES"
unicorn_redmine_directory="/var/www/gitlab"
unicorn_redmine_config="/var/www/gitlab/config/unicorn.rb"
unicorn_redmine_user="gitlab"

#Defaults

The following variables are inferred by default.

unicorn_<child>_group=unicorn_<child>_user
unicorn_<child>_pidfile=unicorn_<child>_directory/tmp/pids/unicorn.pid
unicorn_<child>_env="production" #unicorn -E production

#Debugging / Developing

##Debug messages

Enable rc_debug to get more information on which variable-value-assignments.

##function _set_child_var

This function sets global variables for a child specified in _child. Usage as follows:

_set_child_var 'global_variable_name' 'child_variable' 'yes/no' 'alternative'

###Example

_child="redmine"
_set_child_var "unicorn_group" 'group' 'no' "${unicorn_user}"
# => unicorn_group=$unicorn_redmine_group if specified
# OR unicorn_group=${unicorn_user}