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HAProxy and Rails App running on Docker with Docker Compose

Ruby 78.14% JavaScript 2.18% CoffeeScript 0.70% CSS 2.85% HTML 16.12%

haproxy_docker_rails_demo's Introduction

HAproxy with Rails App and Postgres running on Docker using Docker Compose

Important Ports:

HAProxy Admin Port 70
HAProxy Port 80
MailCatcher 1080

Preparations

docker-compose build

docker-compose run app bundle exec rake db:create
docker-compose run app bundle exec rake db:migrate

docker-compose up

Now you will be able to access the haproxy which will balance the rails apps which use postgres. Don't forget to access the right Docker IP.

Getting Docker's IP

docker-machine ls

Useful routes

/ - will add and email on worker and respond with an text
/debug - will call pry debugger - Please read Caveats before acessing.
/sidekiq - Sidekiq Monitor

Important files:

Useful commands

List Env Variables docker-compose run app env
Run Tests the -e is Optional docker-compose run -e "RAILS_ENV=test" app rake test
Start just one container docker-compose up mailcatcher
Logs for specific app docker-compose logs postgres
Start app with TTY and service ports working docker-compose run --service-ports app

Caveats: Debug

docker-compose run creates a TTY session for your app to connect to, allowing interactive debugging. The default docker-compose up command does not create a TTY session.

Instead of running docker-compose up run the following command:

docker-compose run --service-ports app

Now you'll be able to access the debugger.

🐳

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