'Logs as Conversations' - Troy Davis

Transcript

1. Logs as Conversations Troy Davis troy@sevenscale.com @troyd 1
2. a meta moment Photo credits: Other People 2
3. Logs as.. 1 a chat 2 data 3 dump 3
4. logs as a two-way chat 4
5. Processing IncidentsController#locator (for 127.0.0.1 at 2012-01-04 15:51:21) [GET] Parameters: {"address"=>"123 home rd."} 5
6. Processing IncidentsController#locator (for 127.0.0.1 at 2012-01-04 15:51:21) [GET] Parameters: {"address"=>"123 home rd."} I don't read minds. Give me a hint what you care about. 6
7. Processing IncidentsController#locator (for 127.0.0.1 at 2012-01-04 15:51:21) [GET] Parameters: {"address"=>"123 home rd."} I don't read minds. Give me a hint what you care about. Rendering incidents/locator 'cuz a lot of this is just noise. just sayin. 7
8. Processing IncidentsController#locator (for 127.0.0.1 at 2012-01-04 15:51:21) [GET] Parameters: {"address"=>"123 home rd."} I don't read minds. Give me a hint what you care about. Rendering incidents/locator 'cuz a lot of this is just noise. just sayin. Completed in 22ms (View: 6, DB: 14) | 200 OK [http:// localhost/] 8
9. Processing IncidentsController#locator (for 127.0.0.1 at 2012-01-04 15:51:21) [GET] Parameters: {"address"=>"123 home rd."} I don't read minds. Give me a hint what you care about. Rendering incidents/locator 'cuz a lot of this is just noise. just sayin. Completed in 22ms (View: 6, DB: 14) | 200 OK [http:// localhost/] PS tell matz hello 9
12. puts() is your contribution * or logger.info() 12
13. logs as data 13
14. they already are 14
16. format is usually a distraction X 16
17. stop worrying about format start worrying about utility 17
18. We have delimiters = , : . => 18
19. • iterat{ive,ing} • dense • paprika 19
20. Iterat{ive,ing} log_weasel 20
21. Iterat{ive,ing} log_weasel TwP/logging 21
22. Iterat{ive,ing} 127.0.0.1 GET / 200 OK AlertsController#index HTML 283.3 (DB 5.6, View 158.2) {} {} TwP/logging 22
23. Dense 23
24. Paprika 24
25. Paprika 127.0.0.1 GET /members?s=1 200 OK MembersController#index HTML 133.6 (DB 1.3, View 18.3) {“s”=>”1”} {:user_id=>1} 25
26. meaning is not that hard 26
27. meaning is not that hard heroku logs | awk '{print $1}' | sort | uniq -c \ | awk '{print $1}' | xargs spark 27
28. meaning is not that hard heroku logs | awk '{print $1}' | sort | uniq -c \ | awk '{print $1}' | xargs spark horrifying! awesome! 28
29. logs as a dumping ground 29
31. hierarchy of instrumentation • it might be happening • yep, it happened • it happened with a specific return code/response • it happened X times (count) • it happened at X velocity (gauge) • ... broken down by more attributes (customer, user, instance) • thresholds 31
32. log recklessly. prune occasionally. 32
33. What can I do today? • Add 5 puts() to an app. Anywhere. • Install TwP/logging or log4r • Add 5 debug outputs and flip one on • Install log_weasel • Install my 1-line logger, cabin, or rip Adam Wiggins’ log() • heroku drains:add <log dest like Papertrail> 33
34. what aren’t your apps telling you? Dear audience, 34
35. Logs as Conversations Troy Davis troy@sevenscale.com @troyd 35
36. t/y papertrailapp.com Email me questions, suggestions, feedback troy@sevenscale.com 36