Pyfest Tunisia 2015 - Python & DevOps
- 1. Python & DevOps @pyfest 2015 Python & DevOps @pyfest 2015 Python & DevOps @pyfest 2015
- 2. Ahmed Bessifi @github/abessifi DevOps Engineer @IMDEV - Python, Flask, Puppet, Docker, Jenkins Open source - Author : Pyatta, repmgr-puppet - Contributor : LWP, RQ, PoWA - Member : Debian, openVswitch, metaflask
- 3. And you ?
- 4. DevOps !
- 8. DevOps, what is it for ? - Ensure better development of the application. - Continuous integration and deployment. - Ensure that the application is working as expected (monitoring, high availability, etc).
- 9. DevOps, what is it ?
- 10. DevOps, how to do it ?
- 11. What's all the fuss about ?
- 12. Docker : “... an open platform for developers and sysadmins to build, ship and run distributed applications.” https://www.docker.com/whatisdocker
- 13. Docker : Concepts Images A read only collection of “layers” joined together via a union File System. Containers An instance of an image on which one or more processes are running or have exited.
- 14. Docker : Use cases - Development environments - Application deployment - Continuous integration - Continuous delivery - Platform-as-a-Service (PaaS)
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- 17. Dev Env : Components - OS - System libraries - Python dependencies - Database, cache, etc
- 18. Dev Env : Problems - Constantly change - Never truly consistent - Miscommunication (Ops vs Devs)
- 19. Dev Env : Docker ! - Just write a Dockerfile ! - Easy to change and share - 100 % isolated - Always consistent - Production ready
- 21. Why we write tests ?!
- 22. Python testing libs/frameworks : ● - Pytest, Nose : Unittesting library (less boilerplate). - Mock : easily create fakes for testing. - WebTest : req/resp testing for WSGI web apps. - Selenium : browser automation (web).
- 23. Why using CI ? “A CI system improves the productivity of a development team by automating various things.”
- 24. Jenkins for Python : - Run builds (pytest, tox, etc). - Perform pep8 and Pyflakes checks. - Display xUnit, coverage reports. - Generate and publish docs. - Build python/deb package(s).
- 27. Thank you ! '' We build software for people who build software '' <Codiak> about.me/abessifi github.com/abessifi