Terraform 地形根据条件选择资源

有没有办法为选择资源本身添加if条件

如果env=dev，我需要下面的资源

resource "aws_rds_cluster" "myDB" {
  cluster_identifier      = "aurora-cluster-demo"
  engine                  = "aurora-mysql"
  engine_version          = "5.7.mysql_aurora.2.03.2"
  availability_zones      = ["us-west-2a", "us-west-2b", "us-west-2c"]
  database_name           = "mydb"
  master_username         = "foo"
  master_password         = "bar"
  backup_retention_period = 5
  preferred_backup_window = "07:00-09:00"
}

 resource "route53" "dns" {
 }

其他低于资源

resource "aws_rds_cluster" "myDB" {
  cluster_identifier      = "aurora-cluster-demo"
  engine                  = "aurora-postgres"
  engine_version          = "5.7.mysql_aurora.2.03.2" 
  database_name           = "mydb"
  master_username         = "foo"
  master_password         = "bar" 
  preferred_backup_window = "07:00-09:00"
}

一种方法是，我可以开始添加以下所有变量，或者创建一个局部变量。 engine=var.env=dev？“aurora mysql”：“aurora postgres”

---

有没有其他方法可以禁用资源本身？

也许类似的方法也可以在

count

resource "aws_rds_cluster" "myDB-mysql" {
  count                   = var.env == dev ? 1 : 0
  cluster_identifier      = "aurora-cluster-demo"
  engine                  = "aurora-mysql"
  engine_version          = "5.7.mysql_aurora.2.03.2"
  availability_zones      = ["us-west-2a", "us-west-2b", "us-west-2c"]
  database_name           = "mydb"
  master_username         = "foo"
  master_password         = "bar"
  backup_retention_period = 5
  preferred_backup_window = "07:00-09:00"
}

resource "aws_rds_cluster" "myDB-postgres" {
  count                   = var.env != dev ? 1 : 0
  cluster_identifier      = "aurora-cluster-demo"
  engine                  = "aurora-postgres"
  engine_version          = "5.7.mysql_aurora.2.03.2" 
  database_name           = "mydb"
  master_username         = "foo"
  master_password         = "bar" 
  preferred_backup_window = "07:00-09:00"
}

---

Count我无法添加，因为所有的地形资源可能都没有Count。为什么不使用Count？有什么具体原因吗？当我考虑另一个解决方案时。@kcoder

count

有什么问题吗？这是它的主要用例之一。我的资源名称与“myDB”相同，因为此资源正在其他地方使用。想要保持相同的资源名称好吧，我可能不知道这个问题的另一个选项。但是你可以将myDB作为局部变量来操作，并在任何地方引用它。Terraform的哪个版本？嗨，Terraform-12