A simple command-line DNS testing tool
Its main use is for having rapidly an idea of the health of a DNS zone. It queries each name server of the zone for the SOA record and displays the value of the serial number for each server.
It tries to be simple and fast. As a result, it is not a competitor for serious DNS checkers like ZoneMaster.
-h will tell you the possible options.
It is written in Go, so you need a Go compiler installed. Here, we assume you have cgo.
check-soa depends on GoDNS so you need to install it:
go get github.com/miekg/dns
And copy the executable where you want.
This program is heavily inspired by the original check-soa found in the excellent book "DNS and BIND" by Liu and Albitz. Unlike the original one, my check-soa:
- queries the name servers in parallel
- works with IPv4 and IPv6
- works with TCP
There is a more detailed article about check-soa on my blog.
Copyright (c) 2012, Stephane Bortzmeyer All rights reserved.
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