Search⌘ K
Home
Courses
Creating Long-Lived Web Apps with Ruby on Rails

Improving Production Logging with lograge

Understand how to improve Rails application logging in production by using the Lograge gem. Learn to configure it for clean, single-line log entries that work well with log aggregation tools. Explore how to enable and document this setup to ensure consistent and maintainable log output for your Rails apps.

We'll cover the following...

How are Rails logs different?

Rails application logs have colored text and appear on multiple lines. This might be nice for local development, but it wreaks havoc with most log aggregation tools we may use in production to examine our application logs. Even if we download the files and grep them, we need each logged event to be on a single line on its own.

The lograge is a gem that provides this exact feature. It requires only a short initializer in config/initializers as configuration. Let’s install the gem first:

Ruby
# Gemfile
# bundler-audit checks our dependencies for vulnerabilities
gem "bundler-audit" 
# lograge changes Rails' logging to a more
# traditional one-line-per-event format
gem "lograge"
...