simple run ntop manually and see log... for example my problem:
tomfi# ntop
Mon May 21 19:27:20 2007 ntop will be started as user nobody
Mon May 21 19:27:20 2007 ntop v.3.0 SourceForge .tgz MT (SSL)
Mon May 21 19:27:20 2007 Configured on Jan 30 2005 22:53:02, built on
Jan 30 2005 22:53:23.
Mon May 21 19:27:20 2007 Copyright 1998-2004 by Luca Deri <deri.DeleteThis@ntop.org>
Mon May 21 19:27:20 2007 Get the freshest ntop from
http://www.ntop.org/
Mon May 21 19:27:20 2007 Initializing ntop
Mon May 21 19:27:20 2007 Checking eth0 for additional devices
Mon May 21 19:27:20 2007 Resetting traffic statistics for device eth0
Mon May 21 19:27:20 2007 DLT: Device 0 [eth0] is 1, mtu 1514, header 14
Mon May 21 19:27:20 2007 Initializing gdbm databases
Mon May 21 19:27:20 2007 Now running as requested user 'nobody'
(65534:65534)
Mon May 21 19:27:20 2007 **FATAL_ERROR** ....open of
/var/lib/ntop/prefsCache.db failed: File open error
Mon May 21 19:27:20 2007 1. Is another instance of ntop running?
Mon May 21 19:27:20 2007 2. Make sure that the use you specified can
write in the target directory
tomfi# ls -ls /var/lib/ntop/prefsCache.db
14 -rw-r--r-- 1 ntop ntop 12849 May 2 2006 /var/lib/ntop/prefsCache.db
the row with FATAL_ERROR say something about error opening dbfile .. so
I looked on this file, and I see that file owner is ntop:ntop ... but
ntop runs as user 'nobody'(it is writed on row before the
FATAL_ERROR)... so there is my problem ... for example
jpff napsal(a):
> ...I realise this may be peripheral to firewalls, but I run a Debian
> firewall, which also provides a few other services. For a long time i
> also ran ntop on it to see what was happening. Since updating to 4.0
> it seems that ntop is running but there is no data being collected.
> What simple thing have I overlooked?
> ==John ffitch
>
>
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