Multiple IP for Single Host on Nagios done for Spectranet

Objective :

As of now, we have scenario in which 2 different ISP with 2 different IP are connected in single device. We have no measure to configure loopback or management IP. In that situation we only monitoring via public IP.

1. From monitoring prospective it is very challanging if we add single ip and in service 2 interface doesn’t mean if one interface or ISP1 gets down.
2. Also if we add same device with different name then for same probe we have multiple alarm.

Solution

Download check_muliaddr.pl from https://exchange.nagios.org/directory/Plugins/Others/check_multiaddr/details

And Deploy to NagiosXI Server and Attached pollers in /usr/local/nagios/libexec directory

Also do chown to nagios and chmod to 755

Basic Testing

Our testing Host is BGL-MWIFI-STANZA-9078408-DENVR-BNGINV00S3_001 and IP are 119.82.126.244,103.5.132.187

cd /usr/local/nagios/libexec
./check_multiaddr.pl ./check_ping -H 119.82.126.244,103.5.132.187 -w 800.0,20% -c 999.0,60% -p 5
Should have proper output

Deployment Process

Now with Nagios XI admin Panel

- create Command via CCM example check_xi_service_ifoperstatus_multiaddr ( copy check_xi_service_ifoperstatus) and change command to

original Command
$USER1$/check_ifoperstatus -H $HOSTADDRESS$ -C $ARG1$ -k $ARG2$ $ARG3$
to 
$USER1$/check_multiaddr.pl $USER1$/check_ifoperstatus -H $HOSTADDRESS$ -C $ARG1$ -k $ARG2$ $ARG3$

example check-host-alive_multiaddr ( copy check-host-alive) and change command to

$USER1$/check_multiaddr.pl $USER1$/check_icmp -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100% -p 5

Via CCM Choose Host --> add both IP 119.82.126.244,103.5.132.187 on IP Address and Save .

On All Services create Service Command like check_xi_service_ifoperstatus_multiaddr or check-host-alive_multiaddr and Apply to the Services .

Once you have Applied the configuration , you are online