Mar 162008
 


vnStat is a free OpenSource (GPL License) network traffic monitor for Linux that keeps a log of daily network traffic for the selected interface(s) on the system. Unlike other Network Traffic monitors, vnStat analyzes the traffic information from the /proc filesystem. And, vnStat can be used even without root permissions.

vnStat maintains a database for every interface for which the network traffic analysed. We can watch the live Traffic status on the selected interface(s) or run reports on Hourly, Daily, Weekly and Monthly bandwidth statics for the selected network interfaces.


To install vnStat, all you need is the required C compiler installed.

Here I install vnStat on a Debian 4.0R2 system

Download vnStat

Download the vnStat from here

DebianSystem# wget http://humdi.net/vnstat/vnstat-1.6.tar.gz

Unzip & Untar the downloaded the file

DebianSystem# tar -zxvf vnstat-1.6.tar.gz

Install C Compilers

Ensure that the required C compilers are installed in the system. In debian to install the required packages to compile

DebianSystem# aptitude install build-essentials

ChangeDirectory & Install

DebianSystem# cd vnstat-1.6

DebianSystem:/vnstat-1.6# make

DebianSystem:/vnstat-1.6# make all

That installs the vnStat Bandwidth monitoring software.

Test the Kernel

DebianSystem# vnstat –testkernel

Create Interface Database

Run the following to create a database for each of the interfaces that you would want to monitor traffic bandwidth on.

DebianSystem# vnu -u -i eth0

This creates a database for the interface eth0

Now, give it a few minutes to collect enough data to provide useful statistics.

To show the summary simply type vnstat

DebianSystem# vnstat
Database updated: Sun Dec  2 22:20:01 2007

inet (eth0)

received:     735.00 GB (48.9%)
transmitted:     769.38 GB (51.1%)
total:       1.47 TB

rx     |     tx     |  total
———————–+————+———–
yesterday     23.35 MB |   20.25 MB |   43.60 MB
today     27.47 MB |   21.37 MB |   48.84 MB
———————–+————+———–
estimated        29 MB |      22 MB |      51 MB

To show hourly statistics

DebianSystem# vnstat -h
 inet (eth0)                                                              22:15
^                                                                 r
|                                                                 rt r
|                                                                 rt rt
|                                                                 rt rt
|                                                              r  rt rt
|     rt                                                       r  rt rt
|     rt                                                 rt    rt rt rt
|  rt rt rt                                  r  r  rt r  rt r  rt rt rt
|  rt rt rt                               r  rt rt rt rt rt rt rt rt rt
|  rt rt rt rt r              r     r  r  r  rt rt rt rt rt rt rt rt rt rt
-+—————————————————————————>
|  23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22

h   rx (kB)    tx (kB)      h   rx (kB)    tx (kB)      h   rx (kB)    tx (kB)
23      1,352      1,219    07        277        151    15      1,352      1,165
00      2,281      2,140    08        402        158    16      1,487        878
01      1,485      1,261    09        290        155    17      1,752      1,559
02        648        522    10        589        185    18      1,455      1,001
03        392        261    11        650        202    19      2,332      1,835
04        323        240    12        907        350    20      3,881      3,619
05        311        179    13      1,234      1,044    21      3,695      3,237
06        281        173    14      1,221        812    22        675        591

Other options are

   -q,  –query         query database
-h,  –hours         show hours
-d,  –days         show days
-m,  –months         show months
-w,  –weeks         show weeks
-t,  –top10         show top10
-s,  –short         use short output
-u,  –update         update database
-i,  –iface         change interface (default: eth0)
-?,  –help         short help
-v,  –version         show version
-tr, –traffic         calculate traffic
-l,  –live         show transfer rate in real time

 Leave a Reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

(required)

(required)