How to ensure just one instance of daemon?

Wed Feb 27 14:51:38 UTC 2013

I followed the instructions from
http://stackoverflow.com/questions/13069634/python-daemon-and-systemd-servicefor
how to avoid a problem with LinkFileLock from standard lockfile
library.

Now what I am seeing is, multiple copies of my daemon are happy to run
concurrently -- I expected to never have >1 instance running.

Can you offer any advice?

Thanks
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