Snippet for use variables as a map

main.tf

# variables.tf
variable "myapp_conf" {
  type = map
}

# terraform.tfvars
myapp_conf = {
   REPLICAS = 0
   LIMIT_CPU = "50m"
   LIMIT_MEMORY = "96Mi"
   REQUEST_CPU = "50m"
   REQUEST_MEMORY = "96Mi"
   SECRET_NAME = "my-app-secret"
   ENV_VARS = {
      ENV = "dev"
   }
}

# main.tf
var.myapp_conf["REPLICAS"]

# main.tf (with default)
locals {
  myapp_conf_default = {
    REPLICAS = 1
  }
}

try(var.myapp_conf["REPLICAS"], local.myapp_conf_default["REPLICAS"])