start-stop-daemon和python | daemon和python

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问题描述

我尝试使用start-stop-daemon启动python脚本：

I'm trying to start python script with start-stop-daemon:

sudo /sbin/start-stop-daemon --start --pidfile /home/loop.pid \
--user www-data --group www-data -b --make-pidfile --chuid www-data \
--exec /usr/bin/python /home/loop.py --verbose

但没有python脚本。我做错了什么？

but no python script in my processes. What i do wrong?

loop.py：

import time
while True:
    print "working..."
    time.sleep(3)

推荐答案

我试过你的脚本和命令行，它正在我的机器上工作。您确定脚本位于 /home/loop.py ？

I tried your script and command line, and it is working on my machine. Are you sure your script is located at /home/loop.py?

此外，请参阅这些打印，因为您指定 -b （background）选项，因此该过程将从您的终端分离。尝试运行它而不使用 -b 进行测试，然后可以使用 -stdout 选项：

Also, don't expect to see those prints, because you are specifying the -b (background) option, so the process is being detached from your terminal. Try running it without the -b for testing purposes and then you can redirect the standard output to a logfile with the -stdout option:

sudo /sbin/start-stop-daemon --start --pidfile /home/loop.pid \
--user www-data --group www-data -b --make-pidfile --chuid www-data \
--exec /usr/bin/python /home/loop.py --verbose -stdout /var/log/loop.log

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