Docker Docker Docker Chef

Transcript

1. Docker Docker Docker Chef

2. Config Management Camp Ghent, Belgium February 2016

3. Sean OMeara sean@chef.io @someara

4. whoami

5. Part 1

6. Remember the time

7. Remember that time we didn’t need configuration management because we

   had packaging?

8. Remember that time the cloud came out and we didn’t

   need sysadmins?

9. Remember that time when we didn’t need schemas because we

   had MongoDB?

10. Repeat after me

11. CONFIGURATION MANAGEMENT AND IMMUTABLE INFRASTRUCTURE ARE NOT MUTUALLY EXCLUSIVE

12. Say it again

13. CONFIGURATION MANAGEMENT AND IMMUTABLE INFRASTRUCTURE ARE NOT MUTUALLY EXCLUSIVE

14. We good?

15. The Docker cookbook

16. Configuration Management is not restricted to files, directories, packages and

    services

17. Configuration Management tests and repairs any programmable noun

18. Images are nouns

19. Containers are nouns

20. hello world

21. https://flic.kr/p/br26Cb Setup v0.0.1

22. Install ChefDK

23. git clone https:// github.com/someara/chef- docker-tutorial

24. kitchen test

25. git checkout v0.0.1 git checkout v0.1.0 git checkout v0.1.1 git

    checkout v0.2.0 git checkout v0.2.1 git checkout v0.3.0 git checkout v0.3.1

26. https://flic.kr/p/s684tk Feature v0.1.0

27. metadata.rb

28. .kitchen.yml

29. recipes/hello.rb

30. kitchen converge hello kitchen login hello docker images docker ps

    -a docker logs hello-world

31. git add . git commit -a -m “v0.1.0 - hello”

    git tag v0.1.0

32. https://flic.kr/p/53stX2 Patch v0.1.1

33. Bug report: “hello is not idempotent”

34. kitchen converge hello kitchen converge hello

35. kitchen login hello docker ps -a docker logs hello-world

36. hello-world exits after every run

37. This is expected!

38. http://gliderlabs.com/

39. recipes/hello.rb

40. rubocop \ && rspec \ && kitchen test hello

41. metadata.rb

42. git add . git commit -a -m “v0.1.1 - hello”

    git tag v0.1.1

43. an echo server https://flic.kr/p/6WtX6X

44. https://flic.kr/p/s684tk Feature v0.2.0

45. Recipe work Kitchen work Behavior testing Unit Final Acceptance Commit

46. .kitchen.yml

47. recipes/echo.rb

48. Docker Containers have 40+ (and growing) runtime API options

49. None

50. kitchen converge echo kitchen converge echo kitchen login echo docker

    images docker ps -a docker logs an_echo_server docker inspect an_echo_server echo "hi" | nc localhost 7

51. test/integration/echo/inspec/run_spec.rb

52. rubocop \ && rspec \ && kitchen test echo

53. metadata.rb

54. git add . git commit -a -m “v0.2.0 - echo”

    git tag v0.2.0

55. https://flic.kr/p/dRGr3t Patch v0.2.1

56. Security team recommends a change… Service should listen on explicitly

    defined interfaces

57. kitchen converge echo kitchen login echo netstat -anp

58. Listening on :::7 Let’s fix that.

59. recipes/echo.rb

60. test/integration/echo/inspec/run_spec.rb

61. rubocop \ && rspec \ && kitchen test echo

62. metadata.rb

63. git add . git commit -a -m “v0.2.1 - echo

    patch” git tag v0.2.1

64. https://flic.kr/p/ayDujN notifications and subscriptions

65. https://flic.kr/p/cNdyo Feature v0.3.0

66. recipes/web.rb

67. recipes/web.rb

68. kitchen converge web kitchen converge web kitchen login web docker

    images docker ps -a curl localhost docker logs bob

69. test/integration/web/inspec/run_spec.rb

70. rubocop \ && rspec \ && kitchen test web

71. metadata.rb

72. git add . git commit -a -m “v0.3.0 - web”

    git tag v0.3.0

73. https://flic.kr/p/o9c2G3 Patch v0.3.1

74. Marketing team recommends a change… Bob wasn’t there.

75. kitchen converge web kitchen login web curl localhost

76. Bob was here. Let’s fix that.

77. recipes/web.rb

78. test/integration/echo/inspec/run_spec.rb

79. rubocop \ && rspec \ && kitchen test web

80. metadata.rb

81. git add . git commit -a -m “v0.3.1 - echo

    patch” git tag v0.3.1

82. Part 2

83. kitchen-dokken http://on.mtv.com/1ls5SRc

84. Experimental status Soon to be renamed something less clever

85. Removes bootstrap overhead Uses Docker volumes Chef not baked into

    images Works on Travis

86. https://github.com/someara/ kitchen-dokken/

87. Install ChefDK chef gem install kitchen-dokken

88. git clone https://github.com/ someara/hello_dokken

89. kitchen list docker ps -a

90. None

91. kitchen create docker ps -a

92. Chef container Data container Runner container

93. docker run \ —volumes-from chef \ —volumes-from data \ imagename

    \ chef-client

94. docker diff suitename

95. https://travis-ci.org/ someara/etcd-cookbook

96. fin

97. None