Here are my variables –

variable "env" {
type =string
default = "env_dev"
}

variable "cidrs" {
type=map(list(string))
default = {
  "env_dev" = ["10.10.0.0/16","10,0,0.0/8"]
  "env_test" = ["10.102.20.0/23"]
}

variable "ports" {
type=map(list(string))
default = {
  "env_dev" = ["5432","1521"]
  "env_test" = ["3306"]
}

Ideally, the above variables should create 4 ingress rules for dev —

1. “10.10.0.0/16”, 5432
2. “10.10.0.0/16”, 1521
3. “10,0,0.0/8” 5432
4. “10,0,0.0/8” 1521

and one for test —

1. “10.102.20.0/23” 3306

Finally, I would like to use aws_security_group to create the rules using the Dynamic block ( sample block — will populate after creating the final map variable)

resource "aws_security_group" "my-sg" {
  vpc_id = var.vpc_id
  name = "testing"
  for_each = ....
  dynamic = "ingress" {
     content { 
     from_port = < *from the above variable*> 
     to_port = < *from the above variable* > 
     protocol = "tcp"
     cidr_blocks = < *from the above variable* > 
     }
} 
}
```

Thanks !