Rails logger configuration and log level in production environment

In production environment, it not feasible to use one log file forever. So people use log that rolls over, depending on file size or time etc.

If we want to roll over the log file, we can define our custom logger using the following code in the configuration(in config/environments/production.rb).

config.logger = Logger.new(config.log_path, 50, 5242880)

Here is the doc for instantiating Logger. The params are as follows.

Logger.new(name, shift_age = 7, shift_size = 1048576)<br />Logger.new(name, shift_age = 'weekly')

Another thing that we need to set for the production is the log level. We do not need to log the query generated by active record or logs that are in debug level. So we can define the log level as follows.

config.logger = Logger.new(config.log_path, 50, 5242880)<br />config.logger.level = Logger::INFO

But if you are using the default log which rails offers by default, you can set the log level as,

config.log_level = :info

You can find the rails environment configuration cheat sheet here.