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jbuck/watchdns.sh

Created April 8, 2016 22:57
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Watch for ELB scaling via DNS record changes
Raw
watchdns.sh
#!/bin/bash
DOMAIN="$1"
OLD_RECORDS="`dig +short @8.8.8.8 $DOMAIN A | sort`"
echo `date` $OLD_RECORDS
while true; do
sleep 30
NEW_RECORDS="`dig +short @8.8.8.8 $DOMAIN A | sort`"
if [ "$OLD_RECORDS" != "$NEW_RECORDS" ]; then
echo `date` $NEW_RECORDS
OLD_RECORDS="`dig +short @8.8.8.8 $DOMAIN A | sort`"
fi
done
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