How to add SysLogHandler

Hi,
I would like to write all log messages which are written to launch.log per default additionally to the system log (and later on to a remote logging server).

What I tried so far is to add a SysLogHandler in my launch.py file to every registered logger:

import launch.logging
import logging.handlers
import logging

def generate_launch_description():

    for logger in launch.logging.LaunchLogger.all_loggers:
        handler = logging.handlers.SysLogHandler(address = '/dev/log')
        logger.addHandler(handler)
        logger.critical("test")

The "test" message is logged correctly but the actual output of all other loggers is not shown in the syslog. I guess the reason for this that the loggers are created when the LaunchDescription is executed.

So my question is: How can a add an additional handler to every logger created by ros2 launch in order to write all log messages which are written to launch.log also to the syslog.

Start by tracing how launch.logging.LaunchLogger instances are created and how launch.py's generate_launch_description() relates to that lifecycle. Review the logger and handler entry points mentioned in the issue, including LaunchLogger.all_loggers and SysLogHandler. Done means a supported approach exists for sending all messages written to launch.log to syslog.