How can I reference list of ec2 instance names & IPs in datasorces.tf

My datasorces.tf list of ec2 instance names & IPs is throwing an error.  Can someone advise on my error?

$ cat modules/ec2/datasources.tf
data "template_file" "configure" {
  count = var.instance_count
  template = file("${path.module}/files/configure.sh")

  vars = {
    instance_name = aws_instance.instance[count.index].tags.Name
    all_names     = aws_instance.instance[*].tags.Name
    all_ips       = aws_instance.instance[*].private_ip
  }
}

Validation is fine but plan throws the following error:

│ Error: Incorrect attribute value type
│
│   on modules\ec2\datasources.tf line 5, in data "template_file" "configure":
│    5:   vars = {
│    6:     instance_name = aws_instance.instance[count.index].tags.Name
│    7:     all_names     = aws_instance.instance[*].tags.Name
│    8:     all_ips       = aws_instance.instance[*].private_ip
│    9:   }
│     ├────────────────
│     │ aws_instance.instance is tuple with 2 elements
│     │ count.index is 1
│
│ Inappropriate value for attribute "vars": element "all_names": string
│ required.