chore: ICE subnets rather than AZs for IP unavailability#9054
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chore: ICE subnets rather than AZs for IP unavailability#9054
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Fixes #N/A
Description
Currently when a subnet runs out of IPs (and we see
InsufficientFreeAddressesInSubnet) we ICE the entire AZ - preventing future launches there for 3 minutes (the ICE cache TTL). When a user has configured multiple subnets in an AZ, this incorrectly ICEs the other subnets and prevent what could have been successful launches.This PR changes the granularity of unavailability cache for IP exhaustion from AZ to subnet.
How was this change tested?
make presubmitDoes this change impact docs?
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