How Hudson hit Puppet with a Cucumber

Hudson, Puppet, Cucumber Patrick Debois Julian Simpson 23-25 March 2010 http://www.ukuug.org/ Thursday 25 March 2010

Patrick: Belgian http://www.ﬂickr.com/photos/bookeditor/ Thursday 25 March 2010

Julian: New Zealand http://www.ﬂickr.com/photos/glutnix/ Thursday 25 March 2010

A story about an IT company not so far away http://www.ﬂickr.com/photos/timmygunz/213619310/sizes/l/ Thursday 25 March 2010

Meet the manager http://www.ﬂickr.com/photos/thomashawk/31562846/sizes/l/ Thursday 25 March 2010

Project Managers http://www.ﬂickr.com/photos/praziquantel/32023792/sizes/o/ Thursday 25 March 2010

Rock-Star developers http://www.ﬂickr.com/photos/mikeygottawa/400926090/sizes/o/ Thursday 25 March 2010

Rock-Star sysadmins http://www.ﬂickr.com/photos/auntylaurie/2486555769/sizes/l/ Thursday 25 March 2010

Stubborn guys from operations Thursday 25 March 2010

Typical chain of command http://www.ﬂickr.com/photos/keepwaddling1/3088388506/sizes/l/ Thursday 25 March 2010

Ops and Sysadmins usually get along http://www.ﬂickr.com/photos/anjibarton/3115066604/sizes/l/ Thursday 25 March 2010

But devs and sysadmins often debate about ‘quality’ http://www.ﬂickr.com/photos/charles_nouyrit/3102079345/sizes/o/ Thursday 25 March 2010

Devs:“You should be able to make changes faster in production” http://www.ﬂickr.com/photos/poenaru/1304953088/sizes/o/ Thursday 25 March 2010

Sysadmins: “You should Test More” http://www.ﬂickr.com/photos/cenz/15108117/sizes/o/ Thursday 25 March 2010

Usually results in .... Fight! http://www.ﬂickr.com/photos/timmygunz/213619310/sizes/l/ Thursday 25 March 2010

Then the managers created silos http://www.ﬂickr.com/photos/bulldogsrule/35701005/sizes/o/ Thursday 25 March 2010

Now only some deploys get through http://www.ﬂickr.com/photos/elsie/3577264876/sizes/l/ Thursday 25 March 2010

But over time developers evolved Thursday 25 March 2010

They looked on the internet http://www.ﬂickr.com/photos/gigijin/2400999295/sizes/o/ Thursday 25 March 2010

Found new ways to automate the tests TDD, BDD http://www.ﬂickr.com/photos/dvorscak/498914813/sizes/l/ Thursday 25 March 2010

New ways of automating delivery http://www.ﬂickr.com/photos/eiriknewth/282275178/sizes/l/ Thursday 25 March 2010

Solved their focus problem Thursday 25 March 2010

Kept operations on a leash http://www.ﬂickr.com/photos/squeakywheel/264379350/ Thursday 25 March 2010

And what about the sysadmins? http://www.ﬂickr.com/photos/24443965@N08/2893354732/sizes/o/ Thursday 25 March 2010

Whenever a customer wanted some new server http://www.ﬂickr.com/photos/31525296@N06/2951515346/sizes/o/ Thursday 25 March 2010

They would go off and do their manual installs http://www.ﬂickr.com/photos/maistora/485092742/sizes/l/ Thursday 25 March 2010

Even in terrible conditions http://www.ﬂickr.com/photos/brianatwebbmoto/3096643650/sizes/l/ Thursday 25 March 2010

Just like their role models http://www.flickr.com/photos/eelcoc/809648617/sizes/l/ http://www.flickr.com/photos/fmpgoh/4123201107/ http://www.flickr.com/photos/s9500/2490150854/sizes/l/ Thursday 25 March 2010

Then they started to use kickstarts http://www.ﬂickr.com/photos/alanhogan/3094280494/sizes/o/ Thursday 25 March 2010

Automated it with ‘ugly’ custom scripting http://www.ﬂickr.com/photos/donpezzano/2061429048/sizes/o/ Thursday 25 March 2010

conﬁg mgt v1 = Lcfg, CFEngine http://www.ﬂickr.com/photos/extraketchup/408727662/sizes/o/ Thursday 25 March 2010

What’s a DSL? http://strongdogz.com/wp-content/uploads/2009/11/dog-1.png Thursday 25 March 2010

Puppet is a DSL for systems administration http://www.ﬂickr.com/photos/schockwellenreiter/2184781281/sizes/l/ http://reductivelabs.com/products/puppet/ Thursday 25 March 2010

# verify owner & permissions class base_etc { file { "/etc/passwd": owner => root, group => root, mode => 644} file { "/etc/sudoers": owner => root, group => root, mode => 440} } # install apache class apache2 { # using the local package manager, install the reqd pkg package { "apache2": ensure => installed } service { "apache2": ensure => running, hasstatus => true, hasrestart => true, require => Package["apache2"], } } # default node is applied by _all_ connecting puppet clients node default { include base_etc } # specific config for host www01 node www01 { # load the corresponding class defined above include apache2 } Example Puppet Recipe Read more: http://www.agileweboperations.com/conﬁguration-management-introduction-to-puppet/#ixzz0iyVDqF89 http://www.ﬂickr.com/photos/paguma/4282178983/ Thursday 25 March 2010

Conﬁg Management is evolving Sysadmin Puppet Chef http://www.opscode.com/chef/ http://www.ﬂickr.com/photos/pmtorrone/65245861/sizes/l/ Thursday 25 March 2010

Deploy new systems more often, faster and better reproducible http://www.ﬂickr.com/photos/deannas_pics/3071841122/sizes/l Thursday 25 March 2010

Models http://www.ﬂickr.com/photos/keirmoffatt/35306073/sizes/o/ http://www.ﬂickr.com/photos/xjy/2269150356/sizes/o/ convergence congruence making systems rebuild the similar over time whole node http://resources.metapress.com/pdf-preview.axd?code=yuce6e26a51dx9nh&size=largest http://www.infrastructures.org/papers/turing/turing.html Thursday 25 March 2010

Provisioning Different Environments Test Dev Production http://www.ﬂickr.com/photos/idan586/3570542251/sizes/l/ http://www.ﬂickr.com/photos/richtpt/2173590295/sizes/l/ Thursday 25 March 2010

Becoming agile http://www.pet-dog-cat-supply-store.com/shop/shop_image/product/ad41a25245cbb895fbfbc950b1a0a3f5.jpg Thursday 25 March 2010

Cloud for testing conﬁguration systems http://www.ﬂickr.com/photos/stopbeingcarbon/231737755/sizes/o/ Thursday 25 March 2010

Sysadmins should look at problems from a development perspective http://www.ﬂickr.com/photos/utherpendragonsphotos/14010402/sizes/o/ Thursday 25 March 2010

Devs should view it from operational point of view Thursday 25 March 2010

Infrastructure is becoming code http://www.ﬂickr.com/photos/briandewitt/534143047/sizes/o/ Thursday 25 March 2010

So I’m a programmer now? http://c0424311.cdn.cloudﬁles.rackspacecloud.com/perfect-pet.jpg Thursday 25 March 2010

If you’re a programmer, be a good one http://www.ﬂickr.com/photos/zippy/199990105/sizes/l/ Thursday 25 March 2010

Version your scripts http://www.ﬂickr.com/photos/thelifeofshannon/385604955/sizes/o/ Thursday 25 March 2010

Use a repository http://www.ﬂickr.com/photos/jeffreygutermanﬂickr/2674219854/ Thursday 25 March 2010

Testing http://www.ﬂickr.com/photos/ideonexus/2897085942/sizes/l/ Thursday 25 March 2010

You might like http://cukes.info/ http://www.ﬂickr.com/photos/the_harry_philes/217927389/sizes/l/ Thursday 25 March 2010

Results Thursday 25 March 2010

Gherkin http://www.ﬂickr.com/photos/lawriecate/2543688459/ Thursday 25 March 2010

Validating Apache conﬁg Thursday 25 March 2010

Mail Scenarios Test Test Test http://github.com/albanpeignier/tryphon-puppet Thursday 25 March 2010

Mail Step deﬁnitions http://www.ﬂickr.com/photos/sziliotti/3787189858/sizes/o/ Thursday 25 March 2010

Testing will make the pains visible http://www.ﬂickr.com/photos/-konayuki-/3986635994/sizes/l/ Thursday 25 March 2010

Things will get dirty http://www.ﬂickr.com/photos/schneelocke/467551426/sizes/l/ Thursday 25 March 2010

It requires a strong stomach to keep it up http://www.ﬂickr.com/photos/82213449@N00/68608360/sizes/o/ Thursday 25 March 2010

Extra bonus : Cucumber-Nagios $ cucumber-nagios ukuug.feature critical: 0, warning: 0, 2 okay | passed=2, failed=0 http://auxesis.github.com/cucumber-nagios/ http://www.ﬂickr.com/photos/showbizsuperstar/4033321314/sizes/l/ Thursday 25 March 2010

Keep an overview on your changes Thursday 25 March 2010

Don’t change your infrastructure all at once http://www.ﬂickr.com/photos/sugarpond/2851411809/sizes/l/ Thursday 25 March 2010

One piece at a time http://www.ﬂickr.com/photos/lumpy_golightly/3479956609/sizes/l/ Thursday 25 March 2010

It’s still a human process http://www.ﬂickr.com/photos/shehal/2725353884/sizes/l/ Thursday 25 March 2010

Tools help Story! http://www.ﬂickr.com/photos/cvr/2914455499/ Thursday 25 March 2010

Hudson facilitates the process http://hudson-ci.org/ http://www.ﬂickr.com/photos/clofresh/3384877145/ Thursday 25 March 2010

provisions Puppet invokes Puppet manifests = are tested Hudson OS runs tests Cucumber http://www.ﬂickr.com/photos/tupwanders/89267092/sizes/l/ Thursday 25 March 2010

Tools are only a means to an end http://images0.cafepress.com/product/36081430v1_225x225_Front.jpg Thursday 25 March 2010

Devs and Ops working together http://www.ﬂickr.com/photos/42614915@N00/104222743/sizes/o/ Thursday 25 March 2010

Ops-Ops working together Network Operating System Database Thursday 25 March 2010

It’s about the business http://www.phantompub.com/images/CDPanel_Page_1.jpg Thursday 25 March 2010

Devops: a bit of everything business developers sysadmins http://www.ﬂickr.com/photos/stephenpoff/2852616498/sizes/l/ Thursday 25 March 2010

http://www.devopsdays.org/ http://planet.devops.info/ http://www.devops.info/ #devops - twitter #infra-talk - irc agile-system-administration - googlegroups Puppetcamp Europe 2010 : Ghent, Belgium , on 27&28 May, 2010 Devopsdays US: Mountain View, California, US on Friday, June 25, 2010 Devopsdays Europe coming somewhere in October/November Thursday 25 March 2010

Questions? http://www.ﬂickr.com/photos/rosslittle/161718033/sizes/l/ Thursday 25 March 2010

Thank you! Patrick Debois @patrickdebois patrick.debois@jedi.be http://jedi.be/blog Julian Simpson simpsonjulian@gmail.com @builddoctor http://www.build-doctor.com http://www.ﬂickr.com/photos/caliope-olga/4247576011/sizes/o/ Thursday 25 March 2010

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How Hudson hit Puppet with a Cucumber

by Patrick Debois

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