Now I am going to explain network monitoring tool which monitors bandwidth for a system, ie vnstat(view network statistics).
Its very much easy to install and configure.
To install vnStat on Ubuntu/Debian, you can use apt-get:
sudo apt-get install vnstat
After installation completed, we can test vnstat
root@fwhwin:~# vnstat -d eth0: Not enough data available yet. root@fwhwin:~#
Don’t worry about error intitially it will show error because it’s the first time you are executing that command, so it has to create DB.
You can restart the vnStat daemon vnstatd with:
# /etc/init.d/vnstat restart Starting vnStat daemon: vnstatd
For monitoring traffic per day
root@fwhwin:~# vnstat -d
eth0 / daily
day rx | tx | total | avg. rate
------------------------+-------------+-------------+---------------
08/28/14 15.46 MiB | 3.92 MiB | 19.38 MiB | 3.83 kbit/s
------------------------+-------------+-------------+---------------
estimated 31 MiB | 6 MiB | 37 MiB |
root@fwhwin:~#
For monitoring traffic per hour
root@fwhwin:~# vnstat -h
eth0 11:35
^ r
| r
| r
| r
| r
| r
| r
| r
| rt
| rt
-+--------------------------------------------------------------------------->
| 12 13 14 15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11
h rx (KiB) tx (KiB) h rx (KiB) tx (KiB) h rx (KiB) tx (KiB)
12 0 0 20 0 0 04 0 0
13 0 0 21 0 0 05 0 0
14 0 0 22 0 0 06 0 0
15 0 0 23 0 0 07 0 0
16 0 0 00 0 0 08 0 0
17 0 0 01 0 0 09 0 0
18 0 0 02 0 0 10 0 0
19 0 0 03 0 0 11 22550 5629
root@fwhwin:~#
For monitoring traffic per month
# vnstat –m
We can check vnstat status by following command
root@fwhwin:~# sudo /etc/init.d/vnstat status * vnStat daemon is running root@fwhwin:~#
