NAME
   check_dns_rrsig.pl - Verify RRSIG expiration for a zone.
SYNOPSIS
   check_dns_rrsig.pl -H host -z zone [ options ]
           host:  The server to query
           zone:  The DNS zone to monitor.
OPTIONS
   -z|--zone zone
           The DNS zone to monitor.
   -H|--host host
           The nameserver to query.
   -t timeout
           Specify the plugin timeout. Defaults to 15 seconds.
   -c|--critical critical threshold in days
           Specify the number of days remaining before raising a critical
           alert. Defaults to 14 days.
   -w|--warning warning threshold in days
           Specify the number of days remaining before raising warning
           alert. Defaults to 3 days.
   -V|--version
           Print the version number and exit
   -v|verbose
           Increase verbosity.
DESCRIPTION
   This checks to make sure the nameserver (-H) has RRSIG records for the
   zone specified with more than WARNING or CRITICAL days before
   expiration.
AUTHOR
   Copyright (c) 2010 Chan Wilson
