Docker - Frank Maounis
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Docker is a container technology that allows applications and their dependencies to be packaged into standardized units called containers that can run on any infrastructure regardless of environment. Key Docker tools include Docker Engine for running containers, Docker Machine for provisioning hosts, Docker Swarm for clustering hosts, Docker Compose for defining multi-container apps, and Docker Registry for storing images. Containers allow developers to focus on code by ensuring consistency across environments and enabling microservices architectures through modularization of applications into independent containers that can scale individually.
Docker - Frank Maounis
- 2. Who am I - I am @maounis - I think I know a few things about containers - I have a lot to learn about Docker - I think Docker will help us orchestrate better our applications
- 3. Docker What?
- 4. Docker is a new container technology to “Build, ship and run any app, anywhere”
- 5. What is a Docker container Docker containers wrap up a piece of software in a complete filesystem that contains everything it needs to run: code, runtime, system tools, system libraries – anything you can install on a server.
- 6. Docker Toolbox popular tools
- 7. Docker Engine Runs on Linux to create the operating environment for your distributed applications
- 8. Docker Engine The Docker client executes commands to build, ship and run containers.
- 9. Docker Engine Easy to use:
- 10. Docker Machine Automatically sets up Docker on your computer, on cloud providers, and inside your data center.
- 11. Docker Machine Single command Docker setup. Supports AWS, GCE, Digital Ocean, Azure, Openstack, VMWare etc
- 12. Docker Swarm Distributed applications requires resources that are also distributed. Docker Swarm provides native clustering to turn Docker engines into a single, virtual Docker Engine.
- 13. Docker Swarm With these pooled resources, you can scale out your application as if it were running on a single, huge computer or data center.
- 14. Docker Compose Define your multi-container application with all of its dependencies in a single file, then spin your application up in a single command.
- 15. Docker Registry Open source application dedicated to the storage and distribution of your Docker images with community contributed backends (Ceph, OpenStack Swift, Aliyun)
- 16. Docker Kitematic The fastest and easiest way to start using Docker on your laptop.
- 17. How does this help devs? Well when your app is in Docker containers, you don’t have to worry about setting up and maintaining different environments or different tooling for each language. Focus on creating new features, fixing issues and shipping software.
- 18. Because now you can Deploy something: - And if it works locally, it will work on the server with exactly the same behavior - Regardless of versions - Regardless of distros - Regardless of dependencies
- 19. Containers look like microservices The principle is: - “Do one thing, and do it well” - One container for the web server - One container for the database - One container for logging - etc. Containers can share almost anything (files, network, memory)
- 20. Microservices A style of software architecture: Break down BIG monolithic applications and still run them in a farm of resources
- 21. Conclusion?
- 24. Want to try it? Get Docker Toolbox:
- 25. Thank you!