Graylog: Sending error logs

This documentation is part of the Using with Python guide. You can view the complete guide here: How to send logs from Python to Graylog.

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Graylog is not just for standard log messages. You can also capture and forward errors to better monitor your application's behaviour. This makes it easier to track issues and receive notifications by email, Slack, or Mattermost.

Here is an example where we intentionally call a function that does not exist to generate an error. Remember to replace "<XXXXXX>.stackhero-network.com" with your actual instance hostname.

import logging
import graypy

my_logger = logging.getLogger('test_logger')
my_logger.setLevel(logging.DEBUG)

handler = graypy.GELFTLSHandler('<XXXXXX>.stackhero-network.com', 12201)
my_logger.addHandler(handler)

try:
    unknown_function()
except NameError:
    my_logger.debug('The "unknown_function" raised an error', exc_info=1)

You can run this script just like before. In your Graylog admin panel, you will see the error message "NameError: name 'unknown_function' is not defined" along with the full stack trace.

Error log example