One more time I'm here.
Today I tried put into production lsyncd in a much larger directory than I did in my tests. The directory has 217613 files.
the /proc/sys/fs/inotify/max_user_watches operating system currently is 8192.
I believe that because of this configuration I received the following message:
Tue Jul 31 04:17:30 2018 Error: Terminating since out of inotify watches.
Consider increasing /proc/sys/fs/inotify/max_user_watches
So I increased the value to 524288
and synchronization started.
Does lsyncd have any recommendations for this setting?