Yanic

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Yet another node info collector

yanic is a respondd client that fetches, stores and publishes information about a Freifunk network. The goals:

• Generating JSON for Meshviewer
• Storing statistics in InfluxDB or Graphite to be analyzed by Grafana
• Provide a little webserver for a standalone installation with a meshviewer

How it works

In the first step Yanic sends a multicast message to the group ff05::2:1001 and port 1001. Recently seen nodes that does not reply are requested via a unicast message.

Documentation

Take a look at the git or Gitbook

Installation

Take a look into the Documentation (see above) or for Quick Overview in INSTALL.md.

If you like Docker you may want to take a look here.

Configuration

Read comments in config_example.toml for more information.

Running

Yanic provides several commands:

Usage

Run Yanic without any arguments to get the usage information:

Usage:
  yanic [command]

Available Commands:
  help        Help about any command
  import      Imports global statistics from the given RRD files, requires InfluxDB
  query       Sends a query on the interface to the destination and waits for a response
  serve       Runs the yanic server

Flags:
  -h, --help              help for yanic
      --loglevel uint32   Show log message starting at level (default 40)
      --timestamps        Enables timestamps for log output

Use "yanic [command] --help" for more information about a command.

Serve

Runs the yanic server

Usage:
  yanic serve [flags]

Examples:
yanic serve --config /etc/yanic.toml

Flags:
  -c, --config string   Path to configuration file (default "config.toml")
  -h, --help            help for serve

Global Flags:
      --loglevel uint32   Show log message starting at level (default 40)
      --timestamps        Enables timestamps for log output

Query

Sends a query on the interface to the destination and waits for a response

Usage:
  yanic query <interfaces> <destination> [flags]

Examples:
yanic query "eth0,wlan0" "fe80::eade:27ff:dead:beef"

Flags:
  -h, --help        help for query
      --ip string   ip address which is used for sending (optional - without definition used the link-local address)
      --port int    define a port to listen (if not set or set to 0 the kernel will use a random free port at its own)
      --wait int    Seconds to wait for a response (default 1)

Global Flags:
      --loglevel uint32   Show log message starting at level (default 40)
      --timestamps        Enables timestamps for log output

Import

Imports global statistics from the given RRD files (ffmap-backend).

Usage:
  yanic import <file.rrd> <site> <domain> [flags]

Examples:
yanic import --config /etc/yanic.toml olddata.rrd global global

Flags:
  -c, --config string   Path to configuration file (default "config.toml")
  -h, --help            help for import

Global Flags:
      --loglevel uint32   Show log message starting at level (default 40)
      --timestamps        Enables timestamps for log output

Communities using Yanic

• Freifunk Bremen uses InfluxDB, Grafana, and Meshviewer with a patch to show state-version of nodes.json.
• Freifunk Nord uses hopglass (commit 587740a) as frontend: https://mesh.freifunknord.de/
• Freifunk Kiel uses Meshviewer as frontend: https://map.freifunk.in-kiel.de/

Do you know someone else using Yanic? Create a pull request!

Related projects

Collecting data from respondd:

• HopGlass Server written in Node.js

Respondd for servers:

• mesh-announce from ffnord
• respondd from Sunz3r

License

This software is licensed under the terms of the AGPL v3 License.