Check manual page of check_dns
DNS query to a Nameserver
This is an active check that sends a DNS query to a DNS nameserver.
You can give the DNS name to query for.
It can compare the IP it gets back against a given IP and return CRIT if
they do not match. It can check the DNS server to be authoritativ for the
lookup. It can check response times against given thresholds for WARN
This check can be configured by Wato.
No discovery supported.