Mistakes were made

Mistakes were made Selena Deckelmann @selenamarieSP ogm Ceon Cfo .En Uef2 re0n 1c1e

This is for everyone that’s stayed up all night ﬁxing broken systems.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

You can never think about failure too much.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

1c1e re0n Uef2 .En Cfo Ceon ogmSP

Some goals around pessimism.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Plan for the worst. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

Minimize risk. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

Recover, gracefully. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

Plan for the worst. Minimize risk. Recover, gracefully.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

1c1e re0n Uef2 .En Cfo Ceon ogmSP

Tales of failure to... Document Test Verify Imagine ImplementSP ogm Ceon Cfo .En Uef2 re0n 1c1e

Failure to document. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

Moving Day Thanks, David Prior!SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Prevent documentation failures. • Write documentation. • Update documentation. • Make documenting a step in your written process. • Assign a ﬁxed amount of time to that step.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Documentation tools • Checklists. • Graphic designers. (Pretty wikis. Pretty docs. (Sphinx?) Diagrams.) • Bug tracking.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Failure to test. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

“My ﬁrst day posing as a sysadmin (~1990, no previous training....) I deleted all zero length ﬁles on a Sun workstation.”SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Prevent testing failures. • Verify success criteria. • Write tests. • Test with a buddy. • Have a plan.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Testing tools • Staging environments • Your favorite test framework • Repeatable shell scriptsSP ogm Ceon Cfo .En Uef2 re0n 1c1e

Failure to verify. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

“What does ‘-d’ actually do?”SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Prevent veriﬁcation failures. • Have a plan for things going wrong. • Have a staging environment. • Test your rollback plan, not just your implementation plan.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Veriﬁcation tools • Staging environments • Your buddySP ogm Ceon Cfo .En Uef2 re0n 1c1e

Failure to imagine. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

For my group the bottom line was "dont trust anyone".SP Thanks, Maggie! ogm Ceon Cfo .En Uef2 re0n 1c1e

Recover from failures to imagine. • Share your stories of failure. • Talk with people who are different from you. • Act out implementation scenarios.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Failure to implement. 1c1e re0n Uef2 .En Cfo Ceon ogm SP

Re-implement. • Learn from mistakes.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Reﬂection. (or, the Post-Mortem)SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Checklist Manifesto E-Myth RevisitedSP ogm Ceon Cfo .En Uef2 re0n 1c1e

Summary: Writing down what you do and sharing it is a huge competitive advantage.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Before • Document the plan with a checklist. • Test the plan and the rollback plan. • Identify a “point of no return”.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

During • Screen sharing: UNIX screen,VNC, etc. • Chatroom: AIM, Campﬁre (scrollback!) • Voice: Campﬁre, Skype,VOIP, POTS call line • Headsets! • Designated time-keeper.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

After • Documentation updates • Post-mortems to identify areas of success and areas for improvement. • Limit improvements to 1-2 things.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Plan for the worst. Minimize risk. Recover, gracefully.SP ogm Ceon Cfo .En Uef2 re0n 1c1e

Thanks! re f2 1c 0n 1e Ue .En Cfo on Ce ogm SP

Mistakes were made Selena Deckelmann @selenamarieSP ogm Ceon Cfo .En Uef2 re0n 1c1e

Photo credits • Flickr: sheepguardingllamaSP ogm Ceon Cfo .En Uef2 re0n 1c1e

Mistakes were made

by Selena Deckelmann on Oct 20, 2011

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Mistakes were made — Presentation Transcript

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