Comments on: Install ntop on Red Hat Enterprise Linux / CentOS Linux

By: Vince

Vince — Mon, 08 Aug 2011 14:39:06 +0000

Hi. Thanks for putting this tutorial together. After 2 days of tryhing to install this app, it’s working. I do have a question about an error that was pointed out above, but not answered. See below.

Do this error message mean that it was started, but not running as a daemon at start up? I do get data and able to see graphs.

Thanks for your help. Vince

# /usr/local/bin/ntop -d -L -u ntop -P /usr/local/var/ntop –skip-version-check –use-syslog=daemon

**ERROR** ++++ DEMON MODE=1

Tue Dec 28 15:52:52 2010 NOTE: Interface merge enabled by default
Tue Dec 28 15:52:52 2010 Initializing gdbm databases
Tue Dec 28 15:52:52 2010 **ERROR** ++++ DEMON MODE=1

By: Pablo

Pablo — Tue, 10 May 2011 19:42:33 +0000

Hi Ace, you need to install devel libraries try doing this
yum install libpcap-devel gdbm-deve
Cheers,
Pablo

By: Sudheera

Sudheera — Mon, 28 Mar 2011 06:24:58 +0000

I cant get complied ,

Just type make to compile ntop:
# make

wht can be the major reason?

By: Casey

Casey — Thu, 10 Mar 2011 13:46:17 +0000

Thanks m++, that worked for me too..
I started Ntop without the daemon option..

But one thing I noticed, wen I ran ntop, it would load, but I cant have access to the web interface..
Sorted that out by running
#ntop -W 3001 (this runs as a daemon)
#stop Ntop
#/etc/init.d/ntop start -

That worked..

By: charlie

charlie — Tue, 28 Dec 2010 07:54:07 +0000

This mean??? while I’m try to execute the startup of ntop

# /usr/local/bin/ntop -d -L -u ntop -P /usr/local/var/ntop –skip-version-check –use-syslog=daemon

**ERROR** ++++ DEMON MODE=1

Tue Dec 28 15:52:52 2010 NOTE: Interface merge enabled by default
Tue Dec 28 15:52:52 2010 Initializing gdbm databases
Tue Dec 28 15:52:52 2010 **ERROR** ++++ DEMON MODE=1

By: Christo

Christo — Fri, 17 Sep 2010 03:20:26 +0000

Fixed it, seems selinux was the issue.

http://www.gossamer-threads.com/lists/ntop/users/20506

you can either disable SELinux (if you’re sure you can live without it)

/etc/sysconfig/selinux:
SELINUX=disabled

or change the SELinux security context of the library file

/usr/bin/chcon system_u:object_r:textrel_shlib_t
/usr/local/lib/libntop-3.3.3.so

By: Christo

Christo — Fri, 17 Sep 2010 02:36:12 +0000

Hi,

Getting the error below, I have added /usr/local/lib in ldconfig.conf and updated the cache but still showing the error.

/usr/local/bin/ntop: error while loading shared libraries: /usr/local/lib/libntopreport-4.0.1.so: cannot restore segment prot after reloc: Permission denied

By: Eugene Frakt

Eugene Frakt — Tue, 07 Sep 2010 21:00:44 +0000

You have to change ownership of the ntop directory to ntop user by running something like this for a compiled version of ntop.
chown -R ntop /usr/local/var/ntop

For an rpm version of ntop, it would be this command.
chown -R ntop /var/ntop

Hope this helps.

By: xut

xut — Tue, 07 Sep 2010 04:38:24 +0000

yum install cairo-devel libxml2-devel pango-devel pango libpng-devel freetype freetype-devel libart_lgpl-devel libpcap libpcap*
then install RRDTool
you can download RRDTool from http://oss.oetiker.ch

By: Nandakumar

Nandakumar — Fri, 27 Aug 2010 07:09:39 +0000

I am getting error

configure: error: Unable to find RRD at /usr/local/rrdtool: please use –with-rrd-home=DIR

But i have rrd tool installed. Please help me to solve….

Thanks,
Nandakumar.D

By: chpego

chpego — Fri, 06 Aug 2010 03:30:44 +0000

@ ACE : install libgdbm via yum => yum install libgdm -y
@ Red : yum install GeoIP GeoIP-devel

By: same

same — Fri, 30 Jul 2010 06:07:07 +0000

same problem

By: Red

Red — Fri, 30 Jul 2010 04:20:41 +0000

I have geoip-1.4.6-1 installed but still I get:

Removing dups and misplaced entries from LIBS and INCS…
checking for GeoIP_record_by_ipnum in -lGeoIP… no
checking for GeoIP_name_by_ipnum_v6 in -lGeoIP… no
Please install GeoIP (http://www.maxmind.com/)

Is this an error or not?

By: Ace

Ace — Fri, 30 Jul 2010 03:40:44 +0000

hi, i am having

ERROR: gdbm header or library routines are missing…

Any ideas? I have installed:

gdbm-1.8.0-26.2.1

By: Nice Thomas

Nice Thomas — Sat, 26 Jun 2010 04:31:00 +0000

I have tried installing ntop and installation is completed fine.
But the link http://serverip:3000 is now working
Mine is a vps. The /etc/sysconfig/iptables is an empty file.
I am a getting a page load error while accessing the link
http is up and running fine.
Do you have any idea why it is due to?

By: Sachin Gholap

Sachin Gholap — Thu, 14 Jan 2010 07:51:42 +0000

I m getting error when i use make command
plzzz help me
ntop.h:417:19: error: evdns.h: No such file or directory
address.c: In function ‘dns_response_callback’:
address.c:123: error: ‘DNS_ERR_NONE’ undeclared (first use in this function)
address.c:123: error: (Each undeclared identifier is reported only once
address.c:123: error: for each function it appears in.)
address.c:129: error: ‘DNS_IPv6_AAAA’ undeclared (first use in this function)
address.c:142: warning: assignment discards qualifiers from pointer target type
address.c:150: error: ‘DNS_IPv4_A’ undeclared (first use in this function)
address.c:164: error: ‘DNS_PTR’ undeclared (first use in this function)
address.c: In function ‘queueAddress’:
address.c:243: warning: nested extern declaration of ‘evdns_resolve_reverse’
address.c:243: error: ‘DNS_ERR_NONE’ undeclared (first use in this function)
address.c:249: warning: nested extern declaration of ‘evdns_resolve_reverse_ipv6′
make[2]: *** [address.lo] Error 1
make[2]: Leaving directory `/opt/ntop-3.3.10′
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/opt/ntop-3.3.10′
make: *** [all] Error 2

By: Nishth Vyas

Nishth Vyas — Mon, 07 Dec 2009 07:56:55 +0000

The provided link is not present. Please check.
wget http://freshmeat.net/redir/ntop/7279/url_tgz/ntop-3.3.6.tar.gz

By: praveen

praveen — Thu, 24 Sep 2009 05:39:37 +0000

i install ntop from rpm . when i start the ntop it starts well but after sometime it automatically stops

By: charles

charles — Thu, 27 Aug 2009 19:06:50 +0000

cp: cannot stat `GeoLiteCity.dat’: No such file or directory
make[2]: *** [install-data-local] Error 1
make[2]: Leaving directory `/usr/local/ntop-3.3.10-rc1′
make[1]: *** [install-am] Error 2
make[1]: Leaving directory `/usr/local/ntop-3.3.10-rc1′
make: *** [install-recursive] Error 1

how to solve it, Thank you.

By: m++

m++ — Sun, 09 Aug 2009 05:37:55 +0000

I noticed rrd didn’t work for me if I started `ntop -d` as a daemon. If I started it without the the -d flag as `ntop &` the rrd graphs work fine. I’m using v.3.3.11-dev which warns of possible funny business. Overall, the tool built easily and is completely awesome for monitoring network traffic!