Mistakes were made - LCA 2012
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The document discusses failures that can occur in projects and provides suggestions to prevent and recover from them. It suggests planning for failures by documenting work, testing implementations, verifying assumptions, considering different perspectives, and conducting post-mortems. Tools like wikis, test frameworks, staging environments, and collaboration with others can help address failures in documentation, testing, verification, imagination, and implementation. Conducting reflections and learning from mistakes is important for improving future work.
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Mistakes were made - LCA 2012
- 1. Mistakes were made Selena Deckelmann selena@primeradiant.com Twitter/IRC: @selenamarie So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 2. Failure LC A 20 12
- 3. “Prevention” “Risk management” “Risk mitigation” “MTBF, MTTR” “Success Engineering” LC A 20 12
- 4. Plan for the worst. Minimize risk. Fail. Recover, gracefully. LC A 20 12
- 5. “We don’t need a risk management plan,” he emphatically stated, “because this project can’t be allowed to fail.” - Jim Hightower, http://jimhighsmith.com/2012/01/09/can-do-thinking-makes-risk- management-impossible/ LC A 20 12
- 6. x 2 210 01 E CAAL SLC
- 7. Failure is an option. LC A 20 12
- 8. SCIENCE LC A 20 12
- 9. Dr. Jerker Denrell LC A 20 12
- 10. x 2 210 01 E CAAL SLC
- 11. x 2 210 01 E CAAL SLC
- 12. x 2 210 01 E CAAL SLC
- 13. "I think getting two accidents of this type at the same time is a freak occurrence." -David Cunliffe, NZ Communications Minister LC A 20 12
- 14. x 2 210 01 E CAAL SLC
- 15. “Further damage was incurred on Tuesday afternoon and our engineers returned to repair the damage,” said Virgin Media. SLC CAAL 01E 2 10 2 x
- 16. Plan for when things fail. LC A 20 12
- 17. x 2 210 01 E CAAL SLC
- 18. x 2 210 01 E CAAL SLC
- 19. Tales of failure to... Document Test Verify Imagine Implement So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 20. Failure to document. SLC CAAL 01E 2 10 2 x
- 21. Moving Day Thanks, David Prior! SLC CAAL 01E 2 10 2 x
- 22. Prevent documentation failures. • Write documentation. • Update documentation. • Make documenting a step in your written process. • Assign a fixed amount of time to that step. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 23. Documentation tools • Graphic designers. (Pretty wikis. Pretty docs. (Sphinx?) Diagrams.) • Timelines. • Bug tracking. • Ordered todo lists. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 24. Failure to test. SLC CAAL 01E 2 10 2 x
- 25. “My first day posing as a sysadmin (~1990, no previous training....) I deleted all zero length files on a Sun workstation.” LC A 20 12
- 26. Prevent testing failures. • Verify success criteria. • Write tests. • Test with a buddy. • Have a plan. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 27. Testing tools • Your favorite test framework • Repeatable shell scripts • Staging environments So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 28. Failure to verify. SLC CAAL 01E 2 10 2 x
- 29. “What does ‘-d’ actually do?” LC A 20 12
- 30. Prevent verification failures. • Have a plan for things going wrong. • Have a staging environment. • Test your rollback plan, not just your implementation plan. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 31. Verification tools • Staging environments • Your buddy So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 32. Failure to imagine. LC A 20 12
- 33. For my group the bottom line was "don't trust anyone". Thanks, Maggie! LC A 20 12
- 34. Recover from failures to imagine. • Share your stories of failure. • Talk with people who are different from you. • Act out implementation scenarios. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 35. Failure to implement. LC A 20 12
- 36. Re-implement. • Learn from mistakes. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 37. Reflection. (or, the Post-Mortem) LC A 20 12
- 38. Before • Plan to do a post-mortem. • Document the plan with numbered steps and a timeline. • Test the plan and the rollback plan. • Identify a “point of no return”. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 39. During • Screen sharing: UNIX screen,VNC, etc. • Chatroom: IRC, AIM, Campfire (scrollback!) • Voice: Campfire, Skype,VOIP, POTS call line • Headsets! • Designated time-keeper. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 40. After • Documentation updates • Post-mortem to identify areas of success and areas for improvement. • Limit improvements to 1-2 things. So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 41. Plan for the worst. Minimize risk. Fail. Recover, gracefully. LC A 20 12
- 42. Thanks! xn 0e 1r2 ce ne 2 f1 E0 Ao CL CA SeC mL So
- 43. Mistakes were made Selena Deckelmann selena@primeradiant.com Twitter/IRC: @selenamarie So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c
- 44. Photo credits • Flickr: sheepguardingllama So mL SeC CA CL Ao E0 2 f1 ne 1r2 0e xn e c