Rotate log files after 150 MB (retain 5)

Resolves #1743

Author: orenyk

CHANGELOG.md

@@ -2,8 +2,9 @@
 * This file will be updated whenever a new release is put into production.
 * Any problems should be reported via the "report an issue" link in the footer of the application.
 
-## v6.3.4 - 2018-08-03
+## v6.3.4 - 2018-08-10
 ### Changed
+* Log files now rotate properly, limited to 150 MB/file with 5 files retained ([#1743](https://github.com/YaleSTC/reservations/issues/1743)).
 * Allowed for bulk-updating of user roles with a csv import with just usernames ([#1748](https://github.com/YaleSTC/reservations/issues/1748)).
 
 ### Fixed

config/environments/production.rb

@@ -65,7 +65,11 @@
 
   # Use the lowest log level to ensure availability of diagnostic information
   # when problems arise.
-  config.log_level = :debug
+  config.log_level = :info
+
+  # Rotate logs after 150 MB, keep 5 files
+  # See https://medium.com/@atinders/easy-log-rotation-with-rails-5-7b8d3c173461
+  config.logger = Logger.new(config.paths['log'].first, 5, 150.megabytes)
 
   # Prepend all log lines with the following tags.
   # config.log_tags = [ :subdomain, :uuid ]