Nagios: check_dns: Could not parse arguments

If we get the following error "check_dns: Could not parse arguments" in nagios monitoring server when you try to monitor a host xyz, it means proper args for the command is not set in "/usr/local/nagios/etc/nrpe.cfg" for the check_dns command

Command[check_dns]=/usr/local/nagios/libexec/check_dns -H localhost

You would have missed -H hostname