[SOLVED] Bandwidth logging and monitoring on interface

lpallard · 06-13-2010, 12:43 PM

Hi! following my recent adventures with setting up my slackware router/firewall box (thanks to the slackware guys and this community!!) I am looking to complete the setup with specific features.

I would like to implement a way to monitor and log the internet bandwidth on the eth0 interface (the one that carry the connection to/from the outside world).

My network setup is like that:

ISP -> eth0 (Slackware Firewall/router/DHCP) eth1 -> 8 ports switch -> LAN clients

As you can see, if I monitor EVERYTHING that comes in and out of eth0, I wil get my answers. Because I dont want to monitor whats going on IN my lan, I dont need to worry about eth1.

What would be the best way to achieve this? I would like to get a real time monitoring as well as a daily/monthly/yearly cumulative logging. Similar to what IPTRAF does...

Please keep in mind that I will use this to eventually stop the eth0 when the monthly bandwidth exceed my ISP limit (60GB/month).

I dont want to rely on their logging (from their website) and I dont want to exceed, they will charge me wayyy to much.

Thanks for feedback!

KMBS · 06-14-2010, 07:06 AM

Check out ntop, it's available as slackbuild.

scheidel21 · 06-14-2010, 07:44 AM

could also use SNMP on the server and collect the data with something like cacti, nice graphs with that.

lpallard · 06-14-2010, 08:02 PM

Hi! I tried to install ntop from slackbuilds.org, all the dependency packages installed fine (libevent, lua, and GeoIP) except rrdtool which generated these errors when compiling:

Code:

Find 3rd-Party Libraries
checking for libdbi... no
checking for cairo_font_options_create in -lcairo... no
checking for pkg-config... pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-png.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-png. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-png, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-png is 1.4.6.

       LIBS=-lm 
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
                
checking for cairo_svg_surface_create in -lcairo... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-svg.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-svg. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-svg, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-svg is 1.4.6.

       LIBS=-lm 
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
                
checking for cairo_pdf_surface_create in -lcairo... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-pdf.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-pdf. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-pdf, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-pdf is 1.4.6.

       LIBS=-lm 
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
                
checking for cairo_ps_surface_create in -lcairo... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no cairo-ps.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of cairo-ps. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libcairo and its header files. If
  you have not installed cairo-ps, you can get it either from its original home on

     http://cairographics.org/releases/

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of cairo-ps is 1.4.6.

       LIBS=-lm 
   LDFLAGS=
  CPPFLAGS=

----------------------------------------------------------------------------
                
checking for glib_check_version in -lglib-2.0... yes
checking glib.h usability... no
checking glib.h presence... no
checking for glib.h... no
checking for pkg-config... (cached) pkg-config
checking for glib_check_version in -lglib-2.0... yes
checking glib.h usability... yes
checking glib.h presence... yes
checking for glib.h... yes
checking for pango_cairo_context_set_font_options in -lpango-1.0... no
checking for pkg-config... (cached) pkg-config
configure: WARNING:
----------------------------------------------------------------------------
* I found a copy of pkgconfig, but there is no pangocairo.pc file around.
  You may want to set the PKG_CONFIG_PATH variable to point to its
  location.
----------------------------------------------------------------------------

configure: WARNING:
----------------------------------------------------------------------------
* I could not find a working copy of pangocairo. Check config.log for hints on why
  this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
  so that compiler and the linker can find libpango-1.0 and its header files. If
  you have not installed pangocairo, you can get it either from its original home on

     http://ftp.gnome.org/pub/GNOME/sources/pango/1.17

  You can find also find an archive copy on

     http://oss.oetiker.ch/rrdtool/pub/libs

  The last tested version of pangocairo is 1.17.

       LIBS=-lm  -lglib-2.0  
   LDFLAGS=    
  CPPFLAGS= -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include  

----------------------------------------------------------------------------
                
checking for xmlParseFile in -lxml2... yes
checking libxml/parser.h usability... yes
checking libxml/parser.h presence... yes
checking for libxml/parser.h... yes
configure: error: Please fix the library issues listed above and try again.

I installed pango & cairo with "slackpkg install pango" & "slackpkg install cairo" but no success....

Any idea?
Thanks!

KMBS · 06-15-2010, 12:38 AM

You need the following packages from slackbuilds:

libsigc++
glibmm
cairomm
pangomm

Edit: When I think about it, I'm not quite sure if this is it.

When I run 'pkg-config --list-all | grep cairo' I get the lines 'cairo-svg' and 'cairomm-svg-1.0' among others.
Check if in your case at least 'cairo-svg' shows up.

I built cairomm and pangomm prior to rrdtool for some other program, and the rrdtool description doesn't
mention cairomm and pangomm, so I guess they're not needed, but it's worth a shot.

Post the output of 'pkg-config --list-all | grep cairo' and 'pkg-config --list-all | grep pango', maybe it is helpful.

frandalla · 06-15-2010, 02:22 AM

it depends on what kind of monitoring you want to do. if you want something like "top" to monitor processes of the system, go with "ntop".
If you want to have statistics and logging and pretty graphics and would like to throw a nice web interface to that I'd go with MRTG.

http://oss.oetiker.ch/mrtg/

KMBS · 06-15-2010, 05:27 AM

Quote:

Originally Posted by frandalla

If you want to have statistics and logging and pretty graphics and would like to throw a nice web interface to that I'd go with MRTG.

That's what ntop does.

lpallard · 06-17-2010, 09:25 PM

KMBS, installing the packages you suggested did it!

thanks!
ntop seems perfect for my needs!

frandalla · 06-24-2010, 03:38 AM

Quote:

Originally Posted by KMBS

That's what ntop does.

I see. I only knew ntop as the top-like tool to monitor network traffic. I didn't know it had (or incorporated) mrtg like features.

scheidel21 · 06-24-2010, 08:44 AM

Well there is ntop the application that you run from cli and then there is ntop the software that has a web interface. That one collects data from your network and provides a lot of information. I've attached a screenshot of what ntop looks like in the web interface.

frandalla · 06-27-2010, 09:32 PM

I just knew ntop as a top-like console tool. Thanks for the info

Quote:

Originally Posted by KMBS

That's what ntop does.