How to be Happy: Even When Your Sysadmin Knows Where You Live

It's hard to be happy. It's easier when you write software that doesn't give your sysadmin reason to arrive at your doorstep at 3am. Here's how.

Transcript

2. HOW TO BE HAPPY even when your sysadmin knows where you live
3. josephholsten.com • from teh internet • info janitor @ simply measured
4. who are you?
5. have you ever? • set up a home server? • had the hard drive go corrupt? • had an update introduce errors? • had a dependency conflict when installing? • had it become mysteriously slow?
6. boring is better moral:
7. a day in the life
10. fat artifacts • dependencies
11. deployment • install & config • roll forward • signals & services
12. config
13. services • foreman • process manager upstart, systemd, smf, runit • process monitoring god, bluepill, monit
14. rebuild
15. congrats!
16. ooo, shiny
17. zero downtime restarts • socket handover unicorn, rainbows, passenger 3 • proxy drain haproxy • stop requesting new jobs resque
18. signals • Signal Queues • Read
    http://unicorn.bogomips.org/SIGNALS.html • Then read jstorimer’s
    “Working with UNIX Processes”
19. #!/usr/bin/env ruby # trapper - demo ^C (SIGINT) handler ! trap('INT') { puts 'Got SIGINT'; exit } ! while true; end # loop
20. data migration
21. feature flippers
22. [christmas lights]
23. oh, no.
24. what’s the problem? • crashing • incorrect results • races or deadlocks • performance
25. do i care? • omg: monitoring • oops: issue tracking • fyi: logging, metrics
27. req/sec sec/req
29. STDOUT.printf
31. exceptions
34. if you liked it you should have put a nagios check on it