Building a Platform-as-a-Service with Docker and Node.js
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Docker describes itself as "an open source project to pack, ship and run any application as a lightweight container." Learn how to use Docker to create a simple Platform-as-a-Service for packaging and deploying your Node.js applications! Introducing Borealis.
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Building a Platform-as-a-Service with Docker and Node.js
- 1. Building a Platformas-a-Service with Docker and Node.js @kevinswiber
- 3. “We all live every day in virtual environments, defined by our ideas.” Michael Crichton
- 5. Design Goals • • • • • Process isolation Rapid deployment Ops visibility Elastic scaling Developer experience
- 6. Characteristics • • • • • • • • • Transparent scale Developers use their own tools Access control Status monitoring Task scheduling Release versioning / rollback Zero-downtime deployments Built-in analytics Client SDKs for app developers
- 7. Components • • • • • • User Management Routing Logging Application Lifecycle Add-on Support Monitoring
- 13. Why use Node? • • • • • Event loop HTTP JSON Rich module ecosystem We know it, and so do you.
- 14. Challenges • • • • Routing between containers SSH WTF??? $ man iptables Docker API quirks
- 15. Future Work • • • • User Management Application Lifecycle Better deploy strategy Scale out
Editor's Notes
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- You may know some existing public Platform as a Service providers. Platforms as a Service offer application hosting and often integrated deployment features. Heroku, for instance, integrates with the git version control system, allowing you to `git push heroku master` for deployment. Multiple languages and platforms are often supported. Java, Node.js, PHP, Ruby, Python, C#, and even Erlang in some cases.
- Platforms-as-a-Service make use of a technique called application virtualization. This means apps are run in a sandboxed environment with parameters such as memory usage, disk space, CPU, and bandwidth limits.
- Open source enterprise PaaS offerings are beginning to emerge. This enables PaaS scenarios inside the firewall and running in data centers that have had years of million dollar investments.
- Docker - an open source project to pack, ship and run any application as a lightweight container. Docker introduces the concept of a container, an abstraction over lower level OS application virtualization tools. Separate concerns. Web app runs in one container. Database runs in another. Docker was built by a PaaS provider named dotCloud. Over 4,000 GitHub stargazers in 4 months. Now almost 9,000.
- Overcome platform constraints (dyno limits on Heroku, paywalls). Quick deployment. Make your own rules. It’s fun.
- Code walkthrough. Demo.
- We used Node for all the core components.