How can I access CakePHP log files on Heroku?

Question

I\'ve deployed a CakePHP application to Heroku. CakePHP writes its logs in APP_ROOT/app/tmp/logs/error.log and APP_ROOT/app/tmp/logs/debug.log by d

Answer 1

In the latest versions of CakePHP (>= 3.6.0), the config/app.php file comes pre-configured to use an environment variable override for the stock debug and error logs. These vars should contain a DSN-style string defining the same attributes you would normally place in your config/app.php file.

In the Heroku dashboard under Settings (or via the heroku cli tool), you can add the following ENV vars:

LOG_DEBUG_URL = file:///?className=Cake%5CLog%5CEngine%5CConsoleLog&levels[]=notice&levels[]=info&levels[]=debug
LOG_ERROR_URL = file:///?className=Cake%5CLog%5CEngine%5CConsoleLog&levels[]=warning&levels[]=error&levels[]=critical&levels[]=alert&levels[]=emergency

The above two lines replicate the stock CakePHP logging, but redirect all output to the console instead of files.