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![Python is simple
class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello World!");
}
}
Java
print("Hello World!")
Python](https://image.slidesharecdn.com/ansiblesimplicityandthezenofpython-150805152850-lva1-app6892/85/Ansible-Simplicity-and-the-Zen-of-Python-11-320.jpg)
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Ansible, Simplicity, and the Zen of Python
- 1. Todd Owen Ansible, Simplicity, andthe Zen of Python
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- 4. for host in`cat /etc/temple_hosts` do ssh $host sudo apt-get purge puppet done Bash
- 5. ————————————————————————————————————————— / 3. Simpleis better than complex. / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || || >>> import this
- 6. master agent agent MANIFEST SSL for host in`cat /etc/temple_hosts` do ssh $host sudo apt-get purge puppet done Push Pull SIMPLE
- 7. What is Ansible? •ITautomation tool! •à la puppet, chef, CFEngine, salt, etc! •Growing fast
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- 10. Example playbook --- - hosts:all sudo: yes tasks: - apt: name=puppet state=absent purge=yes -i /etc/temple_hosts
- 11. Python is simple classHelloWorld { public static void main(String[] args) { System.out.println("Hello World!"); } } Java print("Hello World!") Python
- 12. ————————————————————————————————————————— / 3. Simpleis better than complex. / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || || 4. Complex is better than complicated. ! ! ! ! !
- 13. Occam’s Razor Complex:! • manyelements! • all necessary! Complicated:! • introduces unnecessary elements
- 14. Ansible Puppet apt yum package aptyum APT YUM APT YUM module: provider: resource type: Complex Complicated OS:
- 15. Python is uncomplicated •grp (Unix)! • winreg (Windows)! • “…don’t cut off access to platform capabilities or properties” (Guido van Rossum)
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- 19. ————————————————————————————————————————— / 5. Flatis better than nested. / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || ||
- 20. Ansible: unarchive Python: zipfile .NET:System.IO.Compression
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- 22. ————————————————————————————————————————— / 19. Namespacesare one honking great idea -- let's do more of those! / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || ||
- 23. Namespace Roles: Stouts django cchurchdjango futurice django
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- 25. sum_fields --delim="," tally_columns exportIFS="," ! ! ... !
- 26. ————————————————————————————————————————— / 2. Explicitis better than implicit. / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || ||
- 27. Explicit module result tasks: -name: Verify Python 3.x is the default command: /usr/bin/python --version register: pyver failed_when: "'Python 3' not in pyver.stderr"
- 28. Magic variable? tasks: - name:Verify Python 3 is the default command: /usr/bin/python --version register: pyver failed_when: "'Python 3' not in res.stderr"
- 29. Magic variable? tasks: - name:Verify Python 3 is the default command: /usr/bin/python --version register: pyver failed_when: "'Python 3' not in res.stderr" ! - copy: dest=~/py.ver content="{{res.stderr}}"
- 30. Ansible and Python Similardesign philosophy! •Simple! •Consistent! •Easy to learn
- 31. Ansible vision Michael DeHaan,BDFL! “radically simple”! “easiest config management system to use, ever”! — README v0.0.1
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- 33. ————————————————————————————————————————— / 8. Specialcases aren't special enough to break the rules. / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || ||
- 34. –Michael DeHaan “We’re simplifiers.We’re seeking a whole new technical aesthetic where much of the software industry has been adrift.”
- 35. ————————————————————————————————————————— / 1. Beautifulis better than ugly. / ————————————————————————————————————————— ^__^ (oo)_______ (__) )/ ||————w | || ||
- 36. Beautiful! Python simplicity! minimalism! pragmatism = todd.owen@cba.com.au! ! Analytics & InformationTeam, Commonwealth Bank WE’RE HIRING!
- 37. Image Credits ! ThoughtWorks TechnologyRadar! ! Copyright ThoughtWorks! Ansible Galaxy Logo!! ! ! ! ! Copyright Ansible, Inc.! Github Avatar!! ! ! ! ! ! ! Copyright Michael DeHaan! All other images! ! ! ! ! ! ! Public domain Copyright ! This work by Todd Owen is licensed under a Creative Commons Attribution 4.0 International License.!