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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Stackhero offers a ready-to-use Graylog cloud solution that provides a host of benefits, including:

• Unlimited and dedicated SMTP email server included.
• Effortless updates with just a click.
• Customisable domain name secured with HTTPS (for example, https://logs.your-company.com).
• Optimal performance and robust security powered by a private and dedicated VM.

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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 keep track of issues and receive notifications by email, Slack, or Mattermost.

Here is an example where we deliberately 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 as before. In the 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