I have this old app, Ruby 1.8.7, Rails 2.3.2, that runs on Ubuntu 1404. It is old, rock solid and undocumented. We are going to rewrite it but at present we have dockerised it as is because we feared that the host that runs it (also very old) may simply die So we build a container around 14.04, compiled ruby 1.8.7 and installed the necessary gems. Fired it up and pointed the load balancer at it. It is working just fine and we can finally breath. To be clear the container only contains the Rails app and the unicorn_rails application server, the rest of the stack, Nginx and the database, live in their own 22.04 containers Now the odd part, despite the application running in production mode it logs like it is in development mode and the logs are bloated with all the database activity. The log files are a minimum 2/3 database logging. The old installation doesn't do this For the life of me I can not work out how to stop the database logging Any ideas?