RotatingFileHandler

RotatingFileHandler

The RotatingFileHandler class, located in the logging.handlers module, supports rotation of disk log files.

class logging.handlers.RotatingFileHandler(filename, mode='a', maxBytes=0, backupCount=0, encoding=None, delay=0)

LOGGING

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '%(levelname)s %(asctime)s %(module)s %(process)d %(thread)d %(message)s'
        },
        'simple': {
            'format': '%(levelname)s %(message)s'
        },
    },
    'handlers': {
        'logit': {
            'level': 'DEBUG',
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': '/tmp/logit.log',
            'maxBytes': 15728640,  # 1024 * 1024 * 15B = 15MB
            'backupCount': 10,
            'formatter': 'verbose',
        },
    },
    'loggers': {
        'logit': {
            'handlers': ['logit'],
            'level': 'DEBUG',
            'propagate': True,
        },
    },
}

Problems

  • Logs missing when host in uwsgi with multiple process

References

[1] [email protected], 15.9. logging.handlers — Logging handlers — 15.9.5. RotatingFileHandler

[2] [email protected], Django - Rotating File Handler stuck when file is equal to maxBytes

[3] [email protected], Django logging with RotatingFileHandler error

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