@Marvin how do I configure the Prefect worker to output its log messages to AWS CloudWatch? (and try not to start your message with "ah, the joys of logging.")

To configure the Prefect worker to output its log messages to AWS CloudWatch, you would need to set up logging handlers in Prefect and AWS CloudWatch. Here's a general approach: 1. Set up a logging handler in Prefect: Before you start each agent, you can set an environment variable to override the output filename. For example, you can use the following command to start an agent with a specified log file:

bash
$ PREFECT_LOGGING_HANDLERS_FILE_FILENAME=/var/log/prefect-agent1.log prefect agent start -q default

2. Set up AWS CloudWatch: After setting up the logging in Prefect, you would need to configure AWS CloudWatch to ingest these logs. This would involve creating a new log group in CloudWatch and setting up a CloudWatch Logs agent to monitor the log file specified in the Prefect logging handler. Please note that this is a general approach and you might need to adjust it according to your specific setup and requirements. For more detailed instructions, you can refer to the Prefect and AWS CloudWatch documentation. Prefect Logging Guide AWS CloudWatch Logs Agent Please let me know if you need more specific help!

That didn't work, and also the link for Prefect Logging Guide is a 404

Sure, here's an example of how you might set up a

logging.yaml

file to output logs to a file:

yaml
handlers:
    # The handlers we define here will output all logs they receive by default
    # but we include the `level` so it can be overridden by environment

    console:
        level: 0
        class: prefect.logging.handlers.PrefectConsoleHandler
        formatter: standard
        styles:
            # styles omitted for brevity

    prefect server:
        level: 0
        class: prefect.logging.handlers.PrefectServerHandler

    file:
        level: 0
        class: logging.FileHandler
        formatter: standard
        filename: /path/to/your/logfile.log

root:
    level: "${PREFECT_LOGGING_LEVEL}"
    handlers: [console, file]

prefect.client:
    level: "${PREFECT_LOGGING_LEVEL}"

prefect.infrastructure:
    level: "${PREFECT_LOGGING_LEVEL}"
    handlers: [file]

uvicorn:
    level: "${PREFECT_LOGGING_SERVER_LEVEL}"

fastapi:
    level: "${PREFECT_LOGGING_SERVER_LEVEL}"

In this example, a new handler named

file

is defined. This handler uses the

logging.FileHandler

class to output logs to a file. The location of the log file is specified by the

filename

parameter. The

file

handler is then added to the

handlers

list of the

root

logger and the

prefect.infrastructure

logger, so that logs from these sources will be output to the file. Please replace

/path/to/your/logfile.log

with the actual path where you want the logs to be stored. You can put this

logging.yml

file in Prefect’s home directory and Prefect will automatically use your logging configuration. For more details, you can refer to this discourse post.