在DaemonContext中定义pidfile，在python中禁用logger

Question

我试图在python中创建一个带有日志到文件选项的守护进程服务。如果我将pidfile参数添加到daemon。DaemonContext构造函数，logger不记录任何消息到logger.log文件。但是如果我去掉这个参数，一切都会正常工作。运行时没有任何错误。有人知道为什么pidfile参数在守护进程。DaemonContext禁用日志消息?怎么解呢?

任何帮助将不胜感激。由于

import signal
import daemon
import lockfile
import logging
import logging.handlers
def run():
    logger = logging.getLogger("DaemonLog")
    logger.setLevel(logging.INFO)
    handler = logging.FileHandler('logger.log')
    handler.setFormatter(logging.Formatter("%(asctime)s - %(levelname)s - %(message)s"))
    logger.addHandler(handler)
    daemon_context = daemon.DaemonContext(
        working_directory='/opt/myDaemon',
        umask=0o002,
        pidfile=lockfile.FileLock('/var/run/myDaemon.pid'),
        files_preserve=[handler.stream]
    )
    daemon_context.signal_map = {
        signal.SIGTERM: terminate_collector,
        signal.SIGHUP: terminate_collector,
        signal.SIGABRT: terminate_collector
    }
    with daemon_context as context:
        while True:
            logger.info("log")
            func()
            time.sleep(PARAM_SLEEP)
if __name__ == "__main__":
    run()

Answer 1

我成功解决了这个问题。问题是没有使用

命令创建pidfile。

pidfile=lockfile.FileLock('/var/run/myDaemon.pid')

解决方案是使用daemon。Pidfile模块，而不是lockfile模块:

pidfile=daemon.pidfile.PIDLockFile('/var/run/myDaemon.pid')

完整代码解决方案:

import signal
import daemon
import daemon.pidfile
import lockfile
import logging
import logging.handlers
def run():
    logger = logging.getLogger("DaemonLog")
    logger.setLevel(logging.INFO)
    handler = logging.FileHandler('logger.log')
    handler.setFormatter(logging.Formatter("%(asctime)s - %(levelname)s - %(message)s"))
    logger.addHandler(handler)
    daemon_context = daemon.DaemonContext(
        working_directory='/opt/myDaemon',
        umask=0o002,
        pidfile=daemon.pidfile.PIDLockFile('/var/run/myDaemon.pid'),
        files_preserve=[handler.stream]
    )
    daemon_context.signal_map = {
        signal.SIGTERM: terminate_collector,
        signal.SIGHUP: terminate_collector,
        signal.SIGABRT: terminate_collector
    }
    with daemon_context as context:
        while True:
            logger.info("log")
            func()
            time.sleep(PARAM_SLEEP)
if __name__ == "__main__":
    run()