Rails and Docker in Production at NDrive

Transcript

1. Rails and Docker in Production at NDrive André Freitas github.com/andrefreitas

   Euruko 2016

2. We build offline gps navigation apps

3. We have microservices Made with Ruby on Rails, Golang and

   Python

4. How we build any Rails service? FROM docker.ndrive.com/rails ONBUILD COPY

   Gemfile* /code/ ONBUILD RUN bundle install --without="development test" ONBUILD COPY . /code ONBUILD RUN chown 99:99 -R /code ONBUILD USER 99 ONBUILD ARG version ONBUILD LABEL com.ndrive.version=$version DOCKER_TAG=0.1.0 make docker-build docker-push

5. How we deploy? ansible-playbook site.yml -i production.ini --limit web1.ndrive.com --tags

   store environment server or group of servers service

6. - name: container docker: name: auth state: reloaded restart_policy: always

   pull: always net: bridge log_driver: journald image: "docker.ndrive.com/auth:{{ auth.tag }}" ports: - "4001:4001" volumes: - /srv/settings/auth.json:/code/config/settings.json Example of an Ansible Role

7. Dashboard of Containers (Rancher)

8. Logs - Rails logs to stdout - Container sends logs

   to Journald journalctl CONTAINER_NAME=auth -f

9. Pros of Docker - Configuration of servers is simple -

   We build all in a single artifact (Docker image) - Less surprises in deployments - Easy to spin up a test environment (CI) - Friend of microservices

10. Cons of Docker - We need to know how to

    deal with Docker issues - Low maturity in orchestration (maybe Swarm or Rancher in the future) - Risky for databases

11. Links - http://docs.ansible.com/ansible/docker_contain er_module.html - http://rancher.com/rancher/