[Solved] Query luci-app-nlbwmon database

fawzy46 · August 29, 2021, 12:12pm

does anyone know how to pull data directly from Luci-app-nlbwmon?

I tried normal nlbwmon commands but it did not work for some reason.

my goal is to create a script to monitor daily/hourly traffic per IP/mac not just monitoring the usage over the whole accounting period.

RuralRoots · August 29, 2021, 12:51pm

github.com

jow-/nlbwmon/blob/master/README.md

# nlbwmon - Simple conntrack netlink based traffic accounting

## Description

nlbwmon can be used on a linux router to monitor bandwidth used by network hosts.  Network statistics are collected and stored in a database.  The client utility (nlbw) can query the daemon for current statistics.  

By default, nlbwmon tracks bandwidth used over a one month interval, starting on the first of the month.  A database is kept for each interval, up to 10 by default, after that the oldest one is deleted.

nlbwmon tracks traffic by IP Version (ipv4/ipv6), by IP Address, by MAC address, and by layer7 protocol (ie, port numbers).  All tracking information is kept in the database.  The default protocol file contains approximately 45 port definitions.  The user can add/remove ports to this file as necessary.  Any traffic that doesn't match a port definition is classified as 'Other'.  

*NOTE: If the user is not interested in layer7 protocol information, removing all protcools from the protocol file will classify all traffic into 'other', vastly reducing the database size.*

nlbwmon uses a netlink socket to pull usage information from the linux kernel.  nlbwmon collects statistic information from linux conntrack entries.  This method is quite efficient compared to other methods of monitoring bandwidth usage.

Each time the conntrack entries are polled, their counters are reset (zero-on-read).  When a conntrack entry is destroyed, nlbwmon is notified by the kernel, and stats are collected from that entry before it is deleted.


## Usage

### nlbwmon

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Works here.

fawzy46 · August 29, 2021, 1:16pm

I tried again and it works, maybe nlbwmon wasn't running when I tried

tmomas · August 29, 2021, 1:43pm

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system · September 8, 2021, 1:43pm

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