Radicale/logging.md

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page	Logging	/logging/

Radicale logs to stderr. The verbosity of the log output can be controlled with --debug command line argument or the debug configuration option in the logging section.

This is the recommended configuration for use with modern init systems (like systemd) or if you just test Radicale in a terminal.

You can configure Radicale to write its logging output to files (and even rotate them). This is useful if the process daemonizes or if your chosen method of running Radicale doesn't handle logging output.

A logging configuration file can be specified in the config configuration option in the logging section. The file format is explained in the Python Logging Module.

An example configuration to write the log output to the file /var/log/radicale/log:

[loggers]
keys = root

[handlers]
keys = file

[formatters]
keys = full

[logger_root]
level = WARNING  # Change this to DEBUG or INFO for higher verbosity.
handlers = file

[handler_file]
class = FileHandler
args = ('/var/log/radicale/log',)  # Specify the output file here.
formatter = full

[formatter_full]
format = %(asctime)s - [%(thread)x] %(levelname)s: %(message)s

You can specify multiple logger, handler and formatter if you want to have multiple simultaneous log outputs.