1. @ags313#cheffing
Cheffing a dept, one dev at a time
Andrzej Grzesik
@ags313
andrzejgrzesik.info

2. Andrzej Grzesik
!
!
!
@ags313
andrzej@grzesik.it
andrzejgrzesik.info

3. about:me

5. dev going deeper

6. disclaimers

7. my opinions are my own

8. questions?
shoot!

9. #DevoxxUK #cheffing
tweet please

10. tl;dr;

11. there is life beyond Tomcat

15. a bit of background

16. new department

17. new devs
next to existing org

18. do the right thing
do it right

19. enthusiasm through the roof

20. then: project happens

21. we need to run it!

22. what did we do?

23. started to use chef

24. why?

25. it was all amazing

26. ok, not really

27. we needed a prod quickly

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

29. So, chef

31. nope

33. why not *

34. dev friendliness

35. what does it look like?

36. 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!

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

38. code?
easy to read
easy to version
with concise DSL

40. there is a lot of this on github
problem

42. infrastructure as code

43. bash scales well

44. protein scales well
it’s just 25 years to breed and train a new techie!

46. goal: automated infra

48. developers doing infra

49. developers doing infra
problem?

50. problems?
“what could possibly go wrong”

51. it wasn’t easy

52. it isn’t easy

53. reality

56. needed buyin

57. so
form follows function

58. simplicity is key

59. because yet another tool

60. a tiny problem

62. polyglots ftw

63. chef: server or solo?

64. why NOT chef server?

66. code reviews
mandatory

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

68. dual execution
biggest problem

69. people

70. politics

71. Single point of…

73. let people make mistakes

75. do food

77. great for trying

79. Law of Large Numbers

80. servers break

81. many servers break… a lot

83. phoenix pattern
disposable servers

84. phoenix pattern
don’t fix boxes, bake new

85. ‘breaking’ login
helps ;-)

86. How did we deploy?

87. not with chef

88. base role
extremely useful

89. what now?

90. QA/QE to the rescue

91. @YourTwitterHandle#DVXFR14{session hashtag} @ags313#cheffing
Q
&
A

92. @YourTwitterHandle#DVXFR14{session hashtag} @ags313#cheffing
Sum
m
ary

93. people are complicated

94. summary
• keep it simple
• do things
• ???
• profit

95. kthxbye