Use same map in multiple resources at the same time

Terraform
1

Hello, I need some help. I don’t understand how I can link iteration between resources
I have a map :

project = {
  vm1 = {
    hostname = "example1",
    address  = "192.168.1.1"
    
  },
  vm2 = {
    hostname = "example2",
    address  = "192.168.1.2"
  }
}

Then a vm:

resource "vsphere_virtual_machine" "vm" {
  for_each                   = var.project
  name                       = each.key
  resource_pool_id           = data.vsphere_compute_cluster.cluster.resource_pool_id
  datastore_cluster_id       = data.vsphere_datastore_cluster.datastore_cluster.id
  num_cpus                   = 4
  memory                     = 8196
  guest_id                   = "centos7_64Guest"
  folder                     = "Testing"
  scsi_type = "pvscsi"

  disk {
    label            = "disk0"
    unit_number  = 0
    size             = 8
    eagerly_scrub    = false
    thin_provisioned = false
  }

    network_interface {
    network_id = data.vsphere_network.network_internal.id
  }

  clone {
    template_uuid = data.vsphere_virtual_machine.template.id
    customize {
      linux_options {
        host_name = each.value.hostname
        domain    = "localhost.domain"
      }
      network_interface {}
     }

  }
  extra_config = {
    "guestinfo.metadata"          = base64gzip(file("${path.module}/cloudinit/metadata.yaml"))
    "guestinfo.metadata.encoding" = "gzip+base64"
    "guestinfo.userdata"          = base64gzip(file("${path.module}/cloudinit/userdata.yaml"))
    "guestinfo.userdata.encoding" = "gzip+base64"
  }

}

then a template_file that customize metadata.yaml. My goal is when iterating over vm, the template_file.vm will dynamically set value in metadata.yaml. So that each vm will be set up with its ip and hostname, using the same map

data "template_file" "metadata" {
  for_each = vsphere_virtual_machine.vm
  template = file("${path.module}/cloudinit/metadata.yaml")

  vars = {
    hostname = each.value.hostname
    address = each.value.address-internal
  }
}

I need to be able to retrieve the map that was applied to vsphere_virtual_machine.vm to be able to define correctly hostname and address in the template_file.

Thanks in advance.

2

I found a solution thanks to a friend of mine: use template_file instead of file in extra_config

extra_config = {
    "guestinfo.metadata"          = base64gzip(template_file("${path.module}/cloudinit/metadata.yaml"),
{
    hostname = each.value.hostname
    address = each.value.address-internal
})
    "guestinfo.metadata.encoding" = "gzip+base64"
    "guestinfo.userdata"          = base64gzip(file("${path.module}/cloudinit/userdata.yaml"))
    "guestinfo.userdata.encoding" = "gzip+base64"
  }