@ags313#cheffing

Cheffing a dept, one dev at a time

Andrzej Grzesik @ags313 andrzejgrzesik.info

Andrzej Grzesik!

!

!

@ags313

andrzej@grzesik.it

andrzejgrzesik.info

about:me

dev going deeper

disclaimers

my opinions are my own

questions?shoot!

#DevoxxUK #cheffingtweet please

tl;dr;

there is life beyond Tomcat

a bit of background

new department

new devsnext to existing org

do the right thingdo it right

enthusiasm through the roof

then: project happens

we need to run it!

what did we do?

started to use chef

why?

it was all amazing

ok, not really

we needed a prod quickly

and things were broken*and we didn’t have time nor nerves

So, chef

nope

why not *

dev friendliness

what does it look like?

package "haproxy" do! action :install!end!!

template "/etc/haproxy/haproxy.cfg" do! source "haproxy.cfg.erb"! owner "root"! group "root"! mode 0644! notifies :restart, "service[haproxy]"!end!!

service "haproxy" do! supports :restart => true! action [:enable, :start]!end!

put resources together into recipes organise recipes into roles apply roles to machines

code?

easy to read easy to version with concise DSL

there is a lot of this on githubproblem

infrastructure as code

bash scales well

protein scales wellit’s just 25 years to breed and train a new techie!

goal: automated infra

developers doing infra

developers doing infraproblem?

problems?“what could possibly go wrong”

it wasn’t easy

it isn’t easy

reality

needed buyin

soform follows function

simplicity is key

because yet another tool

a tiny problem

polyglots ftw

chef: server or solo?

why NOT chef server?

code reviewsmandatory

review-kiwigit@github.com:ktoso/review-kiwi.git

dual executionbiggest problem

people

politics

Single point of…

let people make mistakes

do food

great for trying

Law of Large Numbers

servers break

many servers break… a lot

phoenix patterndisposable servers

phoenix patterndon’t fix boxes, bake new

‘breaking’ loginhelps ;-)

How did we deploy?

not with chef

base roleextremely useful

what now?

QA/QE to the rescue

@YourTwitterHandle#DVXFR14{session hashtag} @ags313 #cheffing

Q & A

@YourTwitterHandle#DVXFR14{session hashtag} @ags313 #cheffing

Summar

y

people are complicated

summary

• keep it simple

• do things

• ???

• profit

kthxbye