vnStat

vnStat is a console-based network traffic monitor that uses the network interface statistics provided by the kernel as the information source. This means that vnStat won’t actually be sniffing any traffic and also ensures light use of system resources.

By default, traffic statistics are stored on a five minute level for the last 48 hours, on an hourly level for the last 4 days, on a daily level for the last 2 full months and on a yearly level forever. The data retention durations are fully user-configurable. Total seen traffic and a top days listing are also provided. Optional png image output is available in systems with the gd library installed.

Feature

• quick and simple to install and get running
• gathered statistics persist through system reboots
• can monitor multiple interfaces at the same time
• several output options
  • summary, 5 minutes, hourly, daily, monthly, weekly, yearly, top days
  • optional png image output (using libgd)
• data retention duration is fully user configurable on the fly
• months can be configured to follow the billing period
• light, minimal resource usage
• same low cpu usage regardless of traffic
• can be used without root permissions
• online color configuration editor

Changelog v2.7

• Fixed
  • Possibility of segmentation fault with image list output when database
    existed but no data was available
  • ./configure output could show invalid install paths with some parameter
    combinations (pull request by Severin Glöckner)
  • Columns in text hours graph output could get misaligned if the selected
    system locale used a UTF-8 sequence for the thousands separator instead
    of a single character
• New
  • Add -5g / --fivegraph options to image output with sizing related
    parameters for the output of a 5 minute resolution bar graph
  • Add configuration option SummaryGraph and optional parameter for
    --hsummary and --vsummary for selecting which graph is shown next to
    the summary data in the horizontal and vertical summary image outputs
  • Add --large / --small options and configuration option LargeFonts for
    controlling the image output font size
  • Add --scale and configuration option ImageScale for scaling the image
    output to a given percent
  • Add configuration option LineSpacingAdjustment for adjusting the line
    spacing of list format image outputs
  • Add bar visualizations for traffic estimations in image output
  • Allow writing image output to a filename starting with -
  • Add --initdb to daemon for creating a new empty database without having
    the daemon process staying running, doesn’t discard data if a database
    already exists
  • Add configuration option BarColumnShowsRate for having the bar column in
    image list outputs be scaled according to the average rate column values
    when those values are visible, disabled by default
  • Add --dbiflist for getting a list of interfaces in the database, both
    --iflist and --dbiflist also get alternative more parseable outputs
  • Add configuration option for large font output and make 5 minute
    resolution graph visible in vnstat.cgi

Download & Use

Copyright (C) 2017 vergoh