Arrrrcamp 2012: Testing Chef

The state of testing chef recipes

Transcript

1. ® Friday 5 October 12
2. T C f Friday 5 October 12
3. I r • me • devops • chef • clients Friday 5 October 12
4. M • Bernard Grymonpon - @wonko_be • 80% ops, 20% dev • hosting company • managed setups for clients Friday 5 October 12
5. D vOp • buzzword (its a mindset, not a job title) • infra as code • sysadmins using git (hooray) Friday 5 October 12
6. Op C f • recipes / cookbooks • attributes • resources / providers / ... • Solo vs hosted Friday 5 October 12
7. package "apache2" service "apache2" do supports :status => true action [ :enable, :start ] end template "/etc/apache2/ports.conf" do source "ports.erb" owner "root" group "root" mode "0644" end Friday 5 October 12
8. W T R p ? • ease of mind • avoid regression Friday 5 October 12
9. T r p • does a recipe work as intended • is the end-result correct • does the “install me an apache webserver”, actually install apache Friday 5 October 12
10. W w v What google found... Friday 5 October 12
11. F r Friday 5 October 12
12. RSp - f • https://github.com/calavera/rspec-chef • 9 months ago commited • had to patch it to work with latest chef • doesn’t work Friday 5 October 12
13. R p - f Friday 5 October 12
14. RSp - f Friday 5 October 12
15. C f p • https://github.com/acrmp/chefspec • no real runs • no providers/resources/lwrp’s • mocks & all supported • feels like testing chef, not the recipe Friday 5 October 12
16. C f p Friday 5 October 12
17. C f p Friday 5 October 12
18. C f p • hard to work with nested attributes • not all system attributes available (you can add them in) Friday 5 October 12
19. S p! (hammertime) Friday 5 October 12
20. W w v • if I ask chef to install a package • ...will it call the package resource • not ...is the package installed in the end Friday 5 October 12
21. W I • Given a setup for a client • When I run chef-client • Then I want the webapp/site/service to work Friday 5 October 12
22. S p 1: v I v • spinning up machine • apply recipe(s)/role(s) • assertions • destroy machine Friday 5 October 12
23. V r • ruby wrapper around virtualbox • works with “base boxes” • pretty solid integration • solo and server Friday 5 October 12
24. f- -W • whyrun feature • will mock a run • not 100% correct Friday 5 October 12
25. - f- r • https://github.com/calavera/minitest-chef- handler • feedback after converge • only test end result after a run, in chef- running-window Friday 5 October 12
26. Friday 5 October 12
27. C b r- f In its current incarnation, cucumber-chef makes two important assumptions. Firstly, we assume you’re using the Opscode platform rather than your own Chef server. Secondly, we assume that you are comfortable with using Amazon’s EC2 service for providing the ‘bare metal’ on which we set up the test lab. Future releases may well allow you to use your own Chef server, and will definitely look at offering alternative cloud providers. In the meantime, we welcome patches and pull requests! Friday 5 October 12
28. F r • cucumber • vagrant • sahara for snapshotting • aruba (cucumber steps) Friday 5 October 12
29. Friday 5 October 12
30. F r • 50% of time reading/fiddling Vagrant • 20% waiting for virtualbox • 20% wrapping vagrant in a helper class (BoxCollections, Box, etc...) • 5% tying it together Friday 5 October 12
31. T • lxc linux • low-resource virtual machines • actually, close to what I want • https://github.com/exceedhl/toft Friday 5 October 12
32. T - • assembles everything • metadata contains the platforms • test/kitchen contains recipes for tests Friday 5 October 12
33. f • unused • unexplored • unknown • basis for what we can do (supports, parameters, recipes, ...) Friday 5 October 12
34. rr • I have a chef server • It has recipes • It has nodes with roles applied • Test it all Friday 5 October 12
35. I r • git commit • <magic> • “all green, carry on” Friday 5 October 12
36. I r • cucumber / rspec language • vagrant / fog / libvirt / lxc / EC2 / ... • chef server (clone) • librarian • CI server Friday 5 October 12
37. I fr r r - w I high-level, fully-automated, magic Friday 5 October 12