1. Ansible: Automated
App Deployment
Presented By:
Rand Graham

2. Unix
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3. • “Deploying Rails applications used to be a pain…” -
Michael Hartl
Rails’ Reputation
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•“Rails sucks
•My experience is admittedly limited here, but as far as I
can tell, installing a Rails app is impossible.” -Eevee

4. Drawbacks
•Fragile
•Hard to debug
•Error recovery
Shell Scripts
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5. •DSL - Domain Specific Language
Puppet and Chef
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6. Don’t Just Take My Word For It
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7. • Agentless
Ansible Advantages
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• Configuration as Data (YAML)
• Idempotent

8. •Playbooks contain Plays
•Plays contain Tasks
• Tasks call Modules
•Everything is sequentially ordered except
handlers that run at the end.
Ansible Playbooks
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9. A task calls a module to do the work.
Ansible Tasks
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---
- name: Install git
yum: pkg=git
state=installed

10. Apply changes to multiple machines
Inventory
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[web]
webserver-1.foo.com
webserver-2.foo.com
[db]
dbserver-1.foo.com

11. not all tasks are run:
Output of playbook
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PLAY [rails]
GATHERING FACTS
ok: [136.166.60.99]
PLAY RECAP
136.166.60.99 : ok=14 changed=7 unreachable=0 failed=0

12. ansible-playbook -i inventories/staging site.yml
Ansible One Liners
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ansible-playbook -i inventories/staging deploy_app.yml
Provision
Deploy

13. Efficient Rails DevOps
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14. Remember:
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15. Connect with me on twitter:
@rdg_rmcore
Read more at my website:
http://rmcore.com/
On the internets
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16. • The sad state of web app deployment
• Ruby on Rails Tutorial
• Efficient Rails DevOps
• An Overview of Chef
• Ansible Quick Start Video
• Stockfighter CTF
• There Is No Cloud
• Cloudcast Ansible Episode
• Postgresql Automation w/Ansible
References
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17. •Photo of forge by Andrew Stawarz.
Credits
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