Finding impacted AWS Route 53 zones during a migration, fast
AWS Impact Assessment
You’re in the process of decommissioning one of your servers. Before you do that, however, you want to quickly find out what DNS entries will need to be updated in AWS Route 53. Our ‘impact’ tool allows you to check what zones will impacted when changing or removing server ip addresses, neat!
dns-tools impact --cloud aws --oldip <address range>
Surprise, surprise! We have two zones that point to our server not just one like we expected.
As much as people claim “there’s only one record pointing to that IP” we have seen time and again that these claims are false: You need to check the data before you migrate or decommission a workload, if you want to sleep well that night anyway!