Log Rotation Log rotation for your Hanami project

Log Rotation

By default, Hanami logger uses standard output because it’s a best practice that most hosting SaaS companies suggest using.

If you want to use a file, pass stream: 'path/to/file.log' as an option.

Here’s how to setup daily log rotation:

# config/environment.rb
# ...

Hanami.configure do
  # ...

  environment :production do
    logger "daily", level: :info, formatter: :json,
                    stream: "log/production.log"

    # ...
  end
end

If log/ directory is missing, it will be created at the server startup.

Alternatively, you can decide to put a limit to the number of files (let’s say 10) and the size of each file (eg 1,024,000 bytes, aka 1 megabyte):

# config/environment.rb
# ...

Hanami.configure do
  # ...

  environment :production do
    logger 10, 1_024_000, level: :info, formatter: :json,
                          stream: "log/production.log"

    # ...
  end
end

You can speficy arbitrary arguments, that are compatible with Ruby’s Logger.

Learn more at https://guides.hanamirb.org/projects/logging/