Collect Network Statistic With Telegraf & VNSTAT¶

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I use Telegraf on various hosts without any problem, but in some cases I'm facing issues using sysstat plugin on Orange PI zeros.

One of the most important thing for me to collect network bandwidth statistic. For this sysstat plugin is perfect, but how to achieve this without it?

I was thinking a bit, and found out that with exec plugin and vnstat I can gather information about bandwidth.

Here is the configuration:

[[inputs.exec]]
  commands = [
    "/usr/bin/vnstat -i eth0 -tr --short --json",
    "/usr/bin/vnstat -i tun0 -tr --short --json"
    ]
  timeout = "10s"
  name_suffix = "_vnstat"
  data_format = "json"
  json_name_key="vnstat"
  tag_keys= ["interface"]

References:

Example InfluxDB Commands¶

List avaiable hosts:

SHOW TAG VALUES  ON telegraf from "system" WITH KEY = "host"

Show MEASUREMENTS

SHOW MEASUREMENTS  WITH MEASUREMENT =~ /exec.*/

Output:

name: measurements
name
----
exec_vnstat

List Series:

SHOW SERIES ON telegraf FROM exec_vnstat;

Output:

key
---
exec_vnstat,dc=barber,host=*****-opi0,interface=eth0,rack=opi0
exec_vnstat,dc=barber,host=*****-opi0,interface=tun0,rack=opi0

Last update: October 29, 2021