Internet Domains and WHOIS

check_domain_jwhois.sh

Description:

Bash script plugin to alert on expiring domain names. Uses jwhois (developed on CentOS). Warning at 30 days, critical at 14.

Current Version

Last Release Date

2014-01-17

Compatible With

  • Nagios 1.x
  • Nagios 2.x
  • Nagios 3.x

Project Notes
##### Created by Joe McShinsky ##### #! /bin/bash if [ $# -ne 1 ] then echo "Usage: $0 [domain name]" exit 1 fi getDate=`jwhois $1 | grep Expir` expireDate=`echo "$getDate" | cut -d":" -f2-22 | cut -c1-11` currentDate=`date +%s` expireDate=`date +%s --date="$expireDate"` ### Difference between expiration and right now timeDiffSec=`expr $expireDate - $currentDate` ### Convert to days (86400 seconds in a day) timeDiffDays=`expr $timeDiffSec / 86400` if [ $timeDiffDays -lt 15 ] then echo "CRITICAL: $timeDiffDays Left Until Domain Expiration" exit 2 fi if [ $timeDiffDays -lt 31 ] then echo "WARNING: $timeDiffDays Left Until Domain Expiration" exit 1 fi if [ $timeDiffDays -gt 30 ] then echo "OK: $timeDiffDays Left Until Domain Expiration" exit 0 fi echo "Oops! Check the script for any required updates" exit 1
Reviews (2) Add a Review
Updated to support a few other TLD's
by 72mm, March 31, 2014
Adding a few lines to better parse the expiration date.. it's a bit crude, but it's works

######
#! /bin/bash

if [ $# -ne 1 ]
then
echo "Usage: $0 [domain name]"
exit 1
fi

getDate=`jwhois $1 | grep Expir`

FIRST_WORD=`echo $getDate | cut -d " " -f1`

case $FIRST_WORD in
Registrar) expireDate=`echo $getDate | cut -d " " -f5`;;
Registry) expireDate=`echo $getDate | cut -d " " -f4 | cut -d "T" -f1`;;
Domain) expireDate_1=`echo $getDate | tr -s | cut -d ":" -f2-22 | sed -e 's/S*(:)S*//g' -e 's/ GMT //g'`
expireDate=`date -d "$expireDate_1" +%Y-%m-%d`;;
esac

currentDate=`date +%s`

expireDate=`date +%s --date="$expireDate"`

### Difference between expiration and right now
timeDiffSec=`expr $expireDate - $currentDate`

### Convert to days (86400 seconds in a day)
timeDiffDays=`expr $timeDiffSec / 86400`

if [ $timeDiffDays -lt 15 ]
then
echo "CRITICAL: $timeDiffDays Left Until Domain Expiration"
exit 2
fi

if [ $timeDiffDays -lt 31 ]
then
echo "WARNING: $timeDiffDays Left Until Domain Expiration"
exit 1
fi

if [ $timeDiffDays -gt 30 ]
then
echo "OK: $timeDiffDays Left Until Domain Expiration"
exit 0
fi
Helpful? Yes  No 
Worked for several domains, not for all
by GraveD, January 31, 2014
The first domain expiration plugin I managed to work somehow. But still doesn't work for all domains. It seems to be not plugin, but jWhois problem.

$ ./check_jwh.sh microsoft.com
CRITICAL: 0 Left Until Domain Expiration
$

$ jwhois microsoft.com
[Cached]
[whois.markmonitor.com]
$
Helpful? Yes  No 
Project Stats
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