Deploy and Monitoring

Deploy and Monitoring

Change database to Postgres replacing sqlite3 with pg

nano Gemfile

# Use Postgres as the database for Active Record
gem 'pg'

bundle install

Update database config

nano config/database.yml

default: &default
  adapter: postgresql
  pool: 5
  timeout: 5000
development:
  <<: *default
  database: rails_apz_dev
test:
  <<: *default
  database: rails_apz_test
production:
  <<: *default
  database: rails_apz_prod  

Setup database

rake db:create
rake db:migrate

Restart Rails server and open any page to check your app

rails s

open http://localhost:3000

Create Heroku App

heroku create

Get host name

export HOST_NAME_HEROKU=`heroku info -s | grep domain_name | cut -d= -f2`

Add host name to Recaptcha domains

open https://www.google.com/recaptcha/admin#list

Set ENV variables to Heroku

heroku config:set \
       HOST_NAME=$HOST_NAME_HEROKU \
       SMTP_HOST=$SMTP_HOST \
       SMTP_PORT=$SMTP_PORT \
       SMTP_USER=$SMTP_USER \
       SMTP_PASS=$SMTP_PASS \
       RECAPTCHA_PUBLIC_KEY=$RECAPTCHA_PUBLIC_KEY \
       RECAPTCHA_PRIVATE_KEY=$RECAPTCHA_PRIVATE_KEY

Create database and Redis

heroku addons:create heroku-postgresql:hobby-dev
heroku addons:create heroku-redis:hobby-dev

Install Unicorn as the app server and add rails_12factor

nano Gemfile

# Use Unicorn as the app server
gem 'unicorn'
gem 'rails_12factor'
bundle install

Create Procfile for Unicorn and Sidekiq

nano Procfile

web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
worker: bundle exec sidekiq -q mailers -q default

Create Unicorn config

nano config/unicorn.rb

worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 90
preload_app true

before_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
    Process.kill 'QUIT', Process.pid
  end

  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.connection.disconnect!
end

after_fork do |server, worker|
  Signal.trap 'TERM' do
    puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
  end

  defined?(ActiveRecord::Base) and
    ActiveRecord::Base.establish_connection
end

Add Heroku to Git

git add .
git commit -m "Add Heroku config"
git push

Push to Heroku and migrate

git push heroku master
heroku run rake db:migrate

Start worker dyno

heroku ps:scale worker=1

Open the app

heroku open

Add Papertrail

heroku addons:create papertrail
heroku restart

heroku addons:open papertrail

Next step: Update README