Include PIDs in Rails production.log


03 Aug, 2011 11:08 PM UTC

My production servers run Nginx + Passenger, so there are multiple ruby processes all writing to production.log at any given time. This makes it impossible to untangle which lines belong to which request or process afterwards, so I wrote a logger class that inherits from ActiveSupport::BufferedLogger, but includes the severity and PID in the line that is written to the log. This means that in papertrail, I can easily filter the log by PID when I need to see what happened in a specific request or set of requests. Hopefully this will help someone else having the same problem. :)

  1. Support Staff 1 Posted by Troy on 16 Aug, 2011 02:10 PM UTC

    This rocks, Andre. Nice work. The "traditional" solution - in as much as any can be traditional - is to have a per-worker log file, but I think appending the PID to entries is a lot easier.

    Thanks again for sending this. I'm closing the ticket but your update will still appear in other people's search results. Cheers,


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