Data Sources for availability zone

 Data sources do is your make an API request to get information for the availability zone.

provider "aws" {

  region     = "ap-southeast-1"

  access_key = "AK"

  secret_key = "vb"

}

resource "aws_instance" "db" {

   ami = "ami-063e3af9d2cc7fe94"

   instance_type = "t2.micro"

   tags = {

    Name = "DB_Server"

  }

  

}

data "aws_instance" "dbsearch" {

  filter {

    name = "tag:Name"

    values = ["DB_Server"]

  }

}

output "dbserver" {

  value  = data.aws_instance.dbsearch.availability_zone

}