izPing

Author: Ugo Viti ugo.viti@initzero.it

What is this?

izPing is a Multihomed Internet links tester, failover and recovery bash script for network balanced setups. When called from izBalancing it automate the process of failover and recovery of connected Internet lines.

Usage:

This script should not run standalone, but must be called from izbalancing script

Requirements:

• GNU/Linux Firewall running Kernel >=2.6.10 (with iptables module CONNMARK available)
• Bash Shell >= 2.0
• Standard GNU/Linux coreutils utilities (cat, echo, grep, if, etc...)
• GNU Version of awk and sed utilities
• GNU/Linux Netfilter user space utilities (iptables >= 1.2.11)
• iproute2 utilities
• Two or more Internet connections
• An ethernet card for each ISP Router
• izBalancing configured and running (http://www.initzero.it/products/opensource/izbalancing)

Installation:

• Download and configure izbalancing
• copy the izping script into /etc/rc./init.d/ and run:

   chmod 755 /etc/rc./init.d/izping
   chkconfig izping off

• edit the configuration variables inside izping script. Generally is needed to customize only MAILTO variable
• configure and start izbalancing, izping should start inside izbalancing
• look into logs if izping is running: tail -f /var/log/izping.log