Documentation forLoggly

Heroku Logs

Loggly provides the infrastructure to aggregate and normalize log events so they are available to explore interactively, build visualizations, or create threshold-based alerting. In general, any method to send logs from a system or application to an external source can be adapted to send logs to Loggly. The following instructions provide one scenario for sending logs to Loggly.

You can send your Heroku logs by adding a drain to Loggly. We will automatically parse the logs as well. For alternatives on Heroku log analysis, please see the Advanced Options section.

Heroku Logging Setup

1. Add A Drain

Use drain to send your heroku application logs to loggly. Follow below command to send logs.

heroku drains:add --app HEROKU_APP_NAME


  • TOKEN: your customer token from the source setup page
  • HEROKU_APP_NAME: the name of your Heroku application

2. Send Test Logs

Send some test logs to Loggly. If you’re using a logger library in your respective technology, set it up on Heroku to log to stdout.

Ruby sample

puts 'hello logs'

Java sample

System.out.println("hello logs");

3. Verify Events

Search Loggly for events with the heroku tag over the past 20 minutes. It may take a few minutes to index the event. If it doesn’t work, see the troubleshooting section below.


Heroku Log Example
Click on one of the logs to show a list of syslog fields. If you don’t see them, please check that you are using one of our automatically parsed formats.

Advanced Heroku Logging Options

Troubleshooting Heroku Logs

If you don’t see any data show up in the verification step, then check for these common problems.

Check heroku:

  • Wait a few minutes in case indexing needs to catch up
  • Run the "heroku drains" command to verify Heroku has created the drain
  • Run the "heroku logs" command to verify Heroku has received the logs you sent
  • Try curling an event to the bulk endpoint to verify Loggly is able to receive your events

Still Not Working?

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