Docker Docker Docker Chef

Configuration Management Camp
Ghent Belgium
February 2016

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
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
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