pgasiorowski · January 22, 2019 13:42
diff --git a/dns-migration-test.sh b/dns-migration-test.sh
 #!/bin/bash

 # Compares DNS records across two nameservers. List of subdomains is taken from zone file
 #
 # Based on https://stackoverflow.com/questzions/11024797/compare-dns-on-two-different-nameservers

 DOMAIN=example.com
 OLD=ns1.nameserver.com
 NEW=ns2.nameserver.com
 ZONEFILE=example.com.zone
 SLEEPT=0.5

 # Extract unique fully qualified domain names from zone file
 DOMAINS=`cat $ZONEFILE | egrep -v '^\s' | egrep -v '^[;$]' | egrep -v '^$' | awk -v domain=$DOMAIN '$1 ~ /\.$/{ print $1; next }{ print $1 "." domain "."; next }' | sort | uniq`

 # Query each record from both nameservers to get the differences
 diff <(sort -u <(for host in $DOMAINS; do sleep $SLEEPT; dig +nottlid +noall +answer @$OLD $host ANY; done) ) <(sort -u <(for host in $DOMAINS; do sleep $SLEEPT; dig +nottlid +noall +answer @$NEW $host ANY; done) )
	#!/bin/bash

	# Compares DNS records across two nameservers. List of subdomains is taken from zone file
	#
	# Based on https://stackoverflow.com/questzions/11024797/compare-dns-on-two-different-nameservers

	DOMAIN=example.com
	OLD=ns1.nameserver.com
	NEW=ns2.nameserver.com
	ZONEFILE=example.com.zone
	SLEEPT=0.5

	# Extract unique fully qualified domain names from zone file
	DOMAINS=`cat $ZONEFILE \| egrep -v '^\s' \| egrep -v '^[;$]' \| egrep -v '^$' \| awk -v domain=$DOMAIN '$1 ~ /\.$/{ print $1; next }{ print $1 "." domain "."; next }' \| sort \| uniq`

	# Query each record from both nameservers to get the differences
	diff <(sort -u <(for host in $DOMAINS; do sleep $SLEEPT; dig +nottlid +noall +answer @$OLD $host ANY; done) ) <(sort -u <(for host in $DOMAINS; do sleep $SLEEPT; dig +nottlid +noall +answer @$NEW $host ANY; done) )