Gurus!
I'm under developing Terraform modules to provision NAT resource for production and non-production environment. There are two repositories one for Terraform modules another for the live environment for each account (ex: dev, stage, prod..)
I have an problem when access output variable of network/nat module.
It makes me very tired. Please refer below.
- for Terraform module (sre-iac-module repo)
❯ tree sre-iac-modules/network/nat/
sre-iac-modules/network/nat/
├── main.tf
├── non_production
│ └── main.tf
├── outputs.tf
├── production
│ ├── main.tf
│ ├── outputs.tf
│ └── variables.tf
└── variables.tf
- for live environment (sre-iac-modules repo)
❯ tree sre-iac-modules/network/nat/
sre-iac-modules/network/nat/
├── main.tf
├── non_production
│ └── main.tf
├── outputs.tf
├── production
│ ├── main.tf
│ ├── outputs.tf
│ └── variables.tf
└── variables.tf
In the main code snippet, sre-iac-live/dev/services/wink/network/main.tf
I cannot access output variable named module.wink_nat.eip_ids.
When I run terraform plan or terraform console, always I reached following error.
│ Error: Unsupported attribute
│
│ on ../../../../../sre-iac-modules/network/nat/outputs.tf line 2, in output "eip_ids":
│ 2: value = module.production.eip_ids
│ ├────────────────
│ │ module.production is tuple with 1 element
│
│ This value does not have any attributes.
╵
Here is the ../../../../../sre-iac-modules/network/nat/outputs.tf and main.tf
output "eip_ids" {
value = module.production.eip_ids
# value = ["a", "b", "c"]
}
----
main.tf
module "production" {
source = "./production"
count = var.is_production ? 1 : 0
env = ""
region_id = ""
service_code = ""
target_route_tables = []
target_subnets = var.target_subnets
}
module "non_production" {
source = "./non_production"
count = var.is_production ? 0 : 1
}
However, if I use value = ["a", "b", "c"] then it works well!
I couldn't re what is the problem.
Below is the code snippet of ./sre-iac-modules/network/nat/production/outputs.tf
output "eip_ids" {
value = aws_eip.for_nat[*].id
# value = [aws_eip.nat-gw-eip.*.id]
# value = aws_eip.for_nat.id
# value = ["a", "b", "c"]
}
Below is the code snippet of ./sre-iac-modules/network/nat/production/main.tf
resource "aws_eip" "for_nat" {
count = length(var.target_subnets)
vpc = true
}
And finally, here is the main.tf code snippet. (sre-iac-live/dev/services/wink/network/main.tf)
module "wink_vpc" {
.... skip ....
}
module "wink_nat" {
# Relative path references
source = "../../../../../sre-iac-modules/network/nat"
region_id = "${var.region_id}"
env = "${var.env}"
service_code = "${var.service_code}"
target_subnets = module.wink_vpc.protected_subnet_ids
is_production = true
depends_on = [module.wink_vpc]
}
I'm stuck this issue for one day. I needs Terraform Guru's help.
Please give me your great advice. Thank you so much in advance.
Cheers!
productionmodule has acountattribute. Please try:value = module.production[0].eip_ids