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ANSIBLE Radically Simple Configuration & Deployment Michael DeHaan

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PREPARE FOR TRANSPORT

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but first a little bit about me...

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• IBM (Storage) • Motorola (Server/Embedded Stuff) • Red Hat (Cobbler, 1/3 of Func, Cloud...) • Puppet Labs (Product Mgmt) • rPath (API, Cloud...) • shot all photos in this presentation :) michaeldehaan.net

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So...

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In the Beginning There Was The Command Line

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And Everybody Wrote Shell Scripts

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This Was A Lot Of Work

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...It Got Better...

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CFEngine

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...Then It Got (More) Better...

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Puppet

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Strong Resources Support

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...But Too Complex Of A Language...

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Chef

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Uses Ruby To Replace Puppet Language

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Polarizing, not everyone likes Ruby

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Both Are Very “Configuration Focused”

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And also can be a pain to write “code” for and test

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Hard to tell what the scripts you write are actually going to do...

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and Configuration is NOT All You Need To Do

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What About...

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“Do This Now, Just Once, Fast!”

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Initially, SSH Loops

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Predates All of the Above

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then pssh, etc

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But these weren’t API oriented enough for some of us

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Enter Func (I wrote part of this)

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and numerous clones

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(These Are Cool Because You Can Build Applications On Top Of Them)

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But sometimes bad because they undo the work of the config system.

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WAIT!

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We Also Need To Push Software Releases!!!

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Various Attempts...

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Typically Liked By Webapp Developers

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Disliked By Sysadmins

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(Disregard for packaging, don’t track deps, tools can undo work of other tools)

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Capistrano

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Fabric

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Still Complicated...

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Very specialized

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And Multi-Tier Deployment?

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Various Attempts, None Very Good

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Fragile. Didn’t Learn Lessons from Config Tools.

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TO REVIEW

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We (Apparently) Need Three Different Classes of Solutions:

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(1) Configure (2) Deploy (3) Ad-Hoc Tasks

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As A Result, We Are Chained To Multiple Automation Systems

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This Makes No Sense

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Any Way Out?

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DevOps tools have become painful to use

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Knowing The Obscure Idioms To Do X & Y May Initially Seem Fun

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Because It’s Like Programming, Which Is (Sometimes) Fun

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But It’s Slow To Implement

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And It’s Only Fun Until Someone Gets Hurt

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HOW HAVE WE GOTTEN INTO THIS GIANT RABBIT HOLE?

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Why Do I Need Software Tests for My Infrastructure?

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I have other things to do than support this mess.

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WE NEED TO RESET

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We Are Drowning In Complexity

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I want one tool to manage all the things.

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Automation should not require programming experience.

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I Shouldn’t Be Chained Down By Tools That Are Hard To Learn, Use, & Debug

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Automate in English.

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Lock And Load

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It Can Still Be Fun.

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Simpler Tools Mean Easier Collaboration

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Configuration, Deployment, Ad-Hoc Tasks -- All in One Tool

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Idempotent Resources (yeah, we still like those)

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Multi-tier Deployment Designed For Large Web Installations.

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POWER.

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FAME. MONEY.

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Ok, we can’t promise that, but we can promise...

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1/60 the amount of source code of related config tools

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No servers or databases to set up and maintain

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No daemons to fall over

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Extensiblity in ANY programming/scripting language

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Get going in MINUTES

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A Really Powerful API

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A Minimal, Easy To Use Config Language

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Ad Hoc Task Support

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ansible clusterXYZ -a “/ sbin/reboot -t now”

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More Time For Stuff That Matters

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A Simpler Path

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Results.

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ansible.github.com