check if vpc already created

camunda · Jan 17, 2025 · c553308 · c553308
1 parent 9f70b4a
commit c553308
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diff --git a/modules/eks-cluster/README.md b/modules/eks-cluster/README.md
@@ -45,6 +45,7 @@ module "eks_cluster" {
 | [time_sleep.eks_cluster_warmup](https://registry.terraform.io/providers/hashicorp/time/latest/docs/resources/sleep) | resource |
 | [aws_caller_identity.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/caller_identity) | data source |
 | [aws_region.current](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
+| [aws_vpc.existing](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/vpc) | data source |
 | [external_external.elastic_ip_quota](https://registry.terraform.io/providers/hashicorp/external/latest/docs/data-sources/external) | data source |
 | [external_external.elastic_ips_count](https://registry.terraform.io/providers/hashicorp/external/latest/docs/data-sources/external) | data source |
 ## Inputs

diff --git a/modules/eks-cluster/vpc.tf b/modules/eks-cluster/vpc.tf
@@ -27,15 +27,24 @@ data "external" "elastic_ips_count" {
   program = ["bash", "./get_elastic_ips_count.sh", var.region]
 }
 
+# Data source to check if the VPC exists
+data "aws_vpc" "existing" {
+  filter {
+    name   = "tag:Name"
+    values = [local.vpc_name]
+  }
+}
 
 check "elastic_ip_quota_check" {
+
+  # Only check the condition when no existing vpc is there
   assert {
-    condition     = tonumber(data.external.elastic_ip_quota.result.quota) >= length(local.azs)
+    condition     = length(data.aws_vpc.existing.ids) > 0 || tonumber(data.external.elastic_ip_quota.result.quota) >= length(local.azs)
     error_message = "The Elastic IP quota is insufficient to cover all local availability zones (need: ${length(local.azs)}, have: ${tonumber(data.external.elastic_ip_quota.result.quota)})."
   }
 
   assert {
-    condition     = (tonumber(data.external.elastic_ip_quota.result.quota) - tonumber(data.external.elastic_ips_count.result.elastic_ips_count)) >= length(local.azs)
+    condition     = length(data.aws_vpc.existing.ids) > 0 || (tonumber(data.external.elastic_ip_quota.result.quota) - tonumber(data.external.elastic_ips_count.result.elastic_ips_count)) >= length(local.azs)
     error_message = "Not enough available Elastic IPs to cover all local availability zones (need: ${length(local.azs)}, have: ${(tonumber(data.external.elastic_ip_quota.result.quota) - tonumber(data.external.elastic_ips_count.result.elastic_ips_count))})."
   }
 }