vnStat

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vnStat is a lightweight network traffic monitor. It keeps a network traffic log on selectable interfaces. Through the command line the network traffic statistics can be shown.

Installation

Install vnstat from the official repositories.

Configuration

Create Interface Database

First you need to create the nvstat director:

# mkdir /var/lib/vnstat

then create the interface database you like to monitor by using the corresponding command. Eg. for eth0:

# vnstat -u -i eth0

or the wireless interface:

# vnstat -u -i wlan0

Database Update Method Selection

After introducing the interface(s) set one of the update methods.

Note: Choose only one of the following methods Systemd Service or Cron

Systemd Service (preferred)

The recommended way is using systemd service as provided by the installation:

# systemctl start vnstat.service

Cron

Alternatively you can use Cron. A sample of Cron usage is provided with vnStat at /usr/share/doc/vnstat/examples/vnstat.cron.

Auto-load during boot

# systemctl enable vnstat.service

Global settings

Other settings, like settings to control the daemon, can be done in /etc/vnstat.conf.

Usage

Query the network traffic:

# vnstat -q

Viewing live network traffic usage:

# vnstat -l

For all the other options, use:

# vnstat --help

Or for a complete list, use:

# vnstat --longhelp

See Also

VnStat Custom WebUI