check_whois.pl (Advanced Nagios Plugins Collection) ^Popular

Part of the Advanced Nagios Plugins Collection, download it here:

https://github.com/harisekhon/nagios-plugins

./check_whois.pl --help

Nagios Plugin to check domain expiry via whois lookup

This is an important piece of code given that ppl overlook domain renewals till the last minute (and auto-renewals fail when their cached credit cards have expired)

usage: check_whois.pl [ options ]

-d --domain Domain to check
-H --whois-server Query this specific whois server
-w --warning Warning threshold in days for domain expiry (defaults to 60 days)
-c --critical Critical threshold in days for domain expiry (defaults to 30 days)
--no-expiry Do not check expiry. Do not use this except for those rubbish broken european TLDs whois like .fr
--no-nameservers Do not check for nameservers. You should not use this normally
--name-servers Name servers to expect for domain, should be comma delimited list, no spaces
--registrant Registrant to expect
--registrar Registrar to expect
--admin-email Admin email to expect
--tech-email Tech email to expect
-h --help Print description and usage options
-t --timeout Timeout in secs (default: 10)
-v --verbose Verbose mode
-V --version Print version and exit