udplinkmonitor

Create continious and light UDP stream from host to host and warn on fail/loss

Install & run

npm install -g coffee-script
aptitude install rrdtool

then

cp config.config.sample config.coffee
coffee ulm.coffee

How it works

When started, ulm take config.coffee and start a new UDP client for each occurence in servers configuration. It begins to send packet with counter to server1.example.com:33333. Each packet as a new counter. On server1.example.com, you must start another instance of ulm to receive and handle the packet.

Configuration config.coffee

MASTER_HOST: "localhost" 
MASTER_PORT: 33334 
expectedLatency: 40 
hitScript: "./bin/hitScript.sh"
datastore: "/tmp/"
from: "udplink"
servers: 
  serveralias1: "server1.example.com"
  serveralias2: "server2.example.com"
  localhost: "localhost"