fix: Do not replace NAT gateways when additional subnets are added #1055
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manuelmazzuola
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tf-controller plan output: No changes. Your infrastructure matches the configuration.
Terraform has compared your real infrastructure against your configuration
and found no differences, so no changes are needed.
To apply this plan, please merge this pull request. |
bryantbiggs
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Apr 25, 2024
| @@ -1034,7 +1034,7 @@ resource "aws_route" "private_ipv6_egress" { | |||
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| locals { | |||
| nat_gateway_count = var.single_nat_gateway ? 1 : var.one_nat_gateway_per_az ? length(var.azs) : local.max_subnet_length | |||
| nat_gateway_ips = var.reuse_nat_ips ? var.external_nat_ip_ids : try(aws_eip.nat[*].id, []) | |||
| nat_gateway_ips = var.reuse_nat_ips ? var.external_nat_ip_ids : aws_eip.nat[*].id | |||
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why would this change make a difference?
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because the try statement can't be evaluated while planning, so the nat gateways are all replaced, despite the fact that they are not changed
bryantbiggs
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antonbabenko
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## [5.8.1](v5.8.0...v5.8.1) (2024-04-26) ### Bug Fixes * Do not replace NAT gateways when additional subnets are added ([#1055](#1055)) ([cf18c37](cf18c37))
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This PR is included in version 5.8.1 🎉 |
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Description
Adding new private subnets to an already deployed vpc module leads to the replacement of the nat gateways for all the subnets that already existing.
There is no reason to use the try function in that case.
Motivation and Context
Breaking Changes
none
How Has This Been Tested?
examples/*to demonstrate and validate my change(s)examples/*projectspre-commit run -aon my pull requestBefore the change
After the change