Dockerized Rails on Tutum (Passenger + HAProxy)

.0-Rails-Tutum.md

How to deploy rails in tutum as a production server behing HAproxy on Passenger

docker build -t 'my_image_name:latest' . && tutum image push my_image_name:latest

.env

AWS_ACCESS_KEY_ID=ABCXYZ
AWS_SECRET_ACCESS_KEY=ABCXYZ
RACK_ENV=production
RAILS_ENV=production
DATABASE_URL=postgres://myuser:mypass@localhost:5432/web

DockerFile

FROM phusion/passenger-ruby20:0.9.17

# Set correct environment variables.
ENV HOME /root

# Expose Nginx HTTP service
EXPOSE 80
EXPOSE 443

# Start Nginx / Passenger
RUN rm -f /etc/service/nginx/down

# Remove the default site
RUN rm /etc/nginx/sites-enabled/default

# Add the nginx site and config
ADD nginx.conf /etc/nginx/sites-enabled/web.conf
ADD rails-env.conf /etc/nginx/main.d/rails-env.conf

# Install bundle of gems
WORKDIR /tmp
COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock
RUN bundle install

# Add the Rails app
ADD . /home/app/web
RUN chown -R app:app /home/app/web
WORKDIR /home/app/web

RUN set -a && . /home/app/web/.env && bundle exec rake assets:precompile --trace

nginx.conf

server {
  listen 80;
  server_name localhost;
  root /home/app/web/public;

  passenger_enabled on;
  passenger_user app;
  passenger_app_env <my environment, Ex: staging, production>;

  passenger_ruby /usr/bin/ruby2.0;
}

rails-env.conf

#All Environment Variables you need preserved because passenger deletes them all by default
env AWS_ACCESS_KEY_ID;
env AWS_SECRET_ACCESS_KEY;
env RAILS_ENV;
env RACK_ENV;
env DATABASE_URL;
env REDIS_URL;

tutum.yml

redis:
  image: 'tutum/redis:latest'
  environment:
    - REDIS_PASS=mypass
  ports:
    - '6379:6379'
  restart: always
  roles:
    - global
db:
  image: 'postgres:9.4'
  environment:
    - POSTGRES_PASSWORD=mypass
    - POSTGRES_USER=myuser
  ports:
    - '5432:5432'
  restart: always
  roles:
    - global
lb:
  image: 'tutum/haproxy:latest'
  environment:
    - 'DEFAULT_SSL_CERT=<paste cert here. Method here: https://github.com/tutumcloud/haproxy#user-content-ssl-termination>'
  links:
    - web
  ports:
    - '80:80'
    - '443:443'
  restart: always
  roles:
    - global
web:
  image: 'my_image_name'
  command: '/sbin/my_init'
  environment:
    #All my env vars
    - AWS_ACCESS_KEY_ID=ABCXYZ
    - AWS_SECRET_ACCESS_KEY=ABCXYZ
    - 'DATABASE_URL=postgres://myuser:mypass@db:5432/web'
    - RACK_ENV=<my environment>
    - RAILS_ENV=<my environment>
    - 'REDIS_URL=redis://:mypass@redis:6379/0'
    - 'VIRTUAL_HOST=http://mydomain.com,https://mydomain.com'
  expose:
    - '80'
    - '443'
  links:
    - db
    - redis
  restart: on-failure
  roles:
    - global
  target_num_containers: 2
sidekiq:
  image: 'my_image_name'
  command: 'bundle exec sidekiq'
  environment:
    #All my env vars
    - AWS_ACCESS_KEY_ID=ABCXYZ
    - AWS_SECRET_ACCESS_KEY=ABCXYZ
    - 'DATABASE_URL=postgres://myuser:mypass@db:5432/web'
    - RACK_ENV=<my environment>
    - RAILS_ENV=<my environment>
    - 'REDIS_URL=redis://:mypass@redis:6379/0'
  links:
    - db
    - redis
  restart: on-failure
  roles:
    - global