Attack of the Zombie Dynos

A brief summary of the zombie dyno problem that brought SideTour.com the morning of the talk.
5 minute lightning talk for NYC.rb on Tuesday, May 8, 2012

Transcript

1. Attack of the Zombie Dynos Lee Edwards lee@sidetour.com
3. WTF is this? 2012-08-05T07:51:37-07:00 heroku[router]: Error H12 (Request timeout) -> GET sidetour. com/ web=web.2 queue=0 wait=0ms service=0ms bytes=0
4. Error H12 - Request timeout 1. Too much traffic for dynos to handle 2. DDoS attack 3. ???
7. Steps to contain 1. Reboot your app heroku restart 2. Install rack-timeout
8. Steps to fix 1. Wait for a Rack::Timeout::Error to be raised 2. Observe the stack trace 3. Fix the method that caused the problem 4. Deploy