Terraform for_each iteration over object - amazon-web-services

Question

I'm relatively new to Terraform and I'm looking to simplify some private r53 zones I need to create using for_each.
I have the following local which I want to use to create private zones and associated A records in those zones:
locals {
private_zones = [
{
name = "foo.com"
txt = [
"This is the txt record for foo.com"]
ttl = 300
records = {
"host1" = "192.168.0.1",
"host2" = "192.168.0.2"
}
},
{
name = "bar.com"
txt = [
"This is the txt record for bar.com"]
ttl = 300
records = {
"host1" = "192.168.0.3",
"host2" = "192.168.0.4"
}
}
]
}
I've found some code which will allow me to iterate over the local to create the zones
resource "aws_route53_zone" "zone" {
for_each = { for name in local.private_zones : name.name => name }
name = each.value.name
vpc {
vpc_id = <vpc_id>
}
}
but I've no idea how I can iterate and create A records in the respective zone using the records list in each local.

Answer 1

You would use aws_route53_record and flattened private_zones:
locals {
private_zones_flat = merge([
for zone in local.private_zones: {
for host, ip in zone.records:
"${zone.name}-${host}" => {
zone_name = zone.name
host = host
ip = ip
}
}
]...)
}
resource "aws_route53_record" "host" {
for_each = local.private_zones_flat
zone_id = aws_route53_zone.zone[each.value.zone_name].zone_id
name = each.value.host
type = "A"
ttl = "300"
records = [each.value.ip]
}