Papertrail is an awesome log aggregation service we’ve used for long time. There are many ways to send logs to Papertail service, but we found the following solution is the most straightforward and secure for Rails apps like ours.
Add remote_syslog_logger to Gemfile
Configure logger in config/environments/production.rb
Package, deploy and verify logs are sent to Papertrail
Basically the solution can be described as:
Rails app sending log directly to localhost rsyslog daemon using UDP protocol. UDP is a fire-and-forget protocol, so it helps improve logging performance.
Then syslog daemon forward logs to Papertrail syslog host using TCP with TLS encryption. Because production logs may have sensitive information we must deliver them through a reliable and secure channel.