"workstation up" - Docker Development at Flow
- 1. “workstation up” - Docker Development at Flow Mike Roth Principal Engineer roth@flow.io
- 2. Flow Commerce Flow is a next-generation solution for taking merchants global - more at https://flow.io We are about to launch and are hiring – email roth@flow.io if interested
- 3. “Everything should be made as simple as possible, but not simpler.” — Albert Einstein
- 4. Flow uses Docker for… Local development environment (workstation) https://github.com/flowcommere/workstation Building custom base images (Play & PostgresQL) https://github.com/flowcommerce/docker Continuous Integration (Travis CI) https://travis-ci.org/flowcommerce/delta Continuous Delivery (Delta) https://github.com/flowcommerce/delta External APIs https://github.com/flowcommerce/goutils Production (AWS/ECS)
- 6. Right now, let’s make a change… in Production
- 7. Key Stages in Delta • Syncs GitHub SHAs with master branch • Syncs tags & applies new one • Creates/Builds Docker Hub Automated Build • Scale **More on CD @ Flow** http://www.slideshare.net/mbryzek/nyc-continuous- delivery-meetup-introducing-delta
- 8. Now, back to Development
- 9. Docker for Mac • Simple • Containers referenced via `localhost` • Developers install less (e.g. No Virtual Box)
- 10. CLIs at Flow Ruby Go • CLI essentially “baked in” • Get stuff done - repetitive tasks (e.g. repo tagging, environment variable updates in S3, check kinesis, etc.) • Binaries can be passed around, and they “just work” • Super useful for non-tech • Robust
- 11. Application Dependencies Flow manages dependencies with Registry https://github.com/flowcommerce/registry
- 12. Application Dependencies • Implement custom health checks (with substance) • Loosely couple dependencies • No extends or links needed • No volumes • Use S3 for environment variables (in Dev & Prod)
- 13. External APIs Docker Hub API https://github.com/flowcommerce/external-apis/blob/master/ docker/hub.json Docker Registry https://github.com/flowcommerce/external-apis/tree/master/ docker Clients integrated with applications like Workstation and Delta
- 14. Workstation
- 15. Sample Process Flow For example: workstation up —app www Checks YAML configuration for app details Recursively checks for upstream dependencies and maintains priority order (based on their upstream dependencies)
- 16. Sample Process Flow (up) Container Running? Get “latest” from Docker Hub docker run NO Healthy? YES YES NO
- 17. Live Demo
- 18. Let’s Check Prod and send some Docker love!