How to log everything into a file using RotatingFileHandler by using logging.conf file?

Question

I am trying to use `RotatingHandler` for our logging purpose in Python. I have kept backup files as 500 which means it will create maximum of 500 files I guess and the size that I have set is 2000 Bytes (not sure what is the recommended size limit is). If I run my below code, it doesn't log everything into a file. I want to log everything into a file - ``` #!/usr/bin/python import logging import logging.handlers LOG_FILENAME = 'testing.log' # Set up a specific logger with our desired output level my_logger = logging.getLogger('agentlogger') # Add the log message handler to the logger handler = logging.handlers.RotatingFileHandler(LOG_FILENAME, maxBytes=2000, backupCount=100) # create a logging format formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s') handler.setFormatter(formatter) my_logger.addHandler(handler) my_logger.debug('debug message') my_logger.info('info message') my_logger.warn('warn message') my_logger.error('error message') my_logger.cri…

Accepted Answer

It doesn't print out INFO, DEBUG message into the file somehow.. Any thoughts why it is not working out?

you don't seem to set a loglevel, so the default (warning) is used

from http://docs.python.org/2/library/logging.html :

Note that the root logger is created with level WARNING.

as for your second question, something like this should do the trick (I haven't tested it, just adapted from my config which is using the TimedRotatingFileHandler):

```
[loggers]
keys=root

[handlers]
keys=logfile

[formatters]
keys=logfileformatter

[logger_root]
level=DEBUG
handlers=logfile

[formatter_logfileformatter]
format=%(asctime)s %(name)-12s: %(levelname)s %(message)s

[handler_logfile]
class=handlers.RotatingFileHandler
level=NOTSET
args=('testing.log','a',2000,100)
formatter=logfileformatter
```

How to log everything into a file using RotatingFileHandler by using logging.conf file?

Solution

Problem