Module Terraform模块依赖项破坏模板文件

不确定这是一个bug还是我做错了什么。当我在两个模块之间引入依赖关系时，依赖模块的模板文件数据中的变量发生了行为，terraform抱怨它找不到它

我有两个模块，saltmaster和cassandra。目标是saltmaster通过输出变量公开其IP地址，cassandra使用它

如果我通过硬编码一个ip地址作为cassandra模块的输入来切断模块之间的依赖关系，那么所有资源都会正确创建。但当我介绍依赖性时，terraform抱怨：

• module.cassandra.aws_instance.momentum_cassandra[2]：资源“data.template_file.momentum_cassandra”没有变量“data.template_file.momentum_cassandra.*.vars.hostname”的属性“vars.hostname”

注意，我在模板文件的vars部分定义cassandra实例的主机名，然后在aws_实例的tags块中使用它。它在隔离状态下工作良好，但在cassandra模块依赖于saltmaster模块时会中断

卡桑德拉

data "template_file" "momentum_cassandra" {
  count    = "${var.instance_count}"
  template = "${file("${path.module}/userdata.sh")}"

  vars {
    hostname   = "${format("%s%02d", var.name, count.index + 1)}"
    saltmaster = "${var.saltmaster}"
    salt_installtype = "${var.salt_installtype}"
    seed       = "${count.index == 0 ? "true" : "false"}"
    datacenter = "${var.datacenter}"
    rack       = "${var.rack}"
  }
}

resource "aws_instance" "momentum_cassandra" {
  count                  = 3
  provider               = "aws.us_dev"
  ami                    = "${var.ami}"
  instance_type          = "${var.instance_type}"
  key_name               = "${var.instance_key_name}"
  subnet_id              = "${element(var.vpc_subnet_ids, count.index)}"
  iam_instance_profile   = "${var.iam_instance_profile}"

  vpc_security_group_ids = ["${aws_security_group.momentum_cassandra.id}"]
  user_data              = "${data.template_file.momentum_cassandra.*.rendered[count.index]}"

  lifecycle {
    ignore_changes = ["ami", "user_data"]
  }
  tags {
    Name        = "${data.template_file.momentum_cassandra.*.vars.hostname[count.index]}"

main.tf

module "cassandra" {
  source = "./tf-aws-momentum-cassandra"
  saltmaster = "${module.saltmaster.private_ip}"
}

saltmaster.tf

# create the userdata for bootstrapping
data "template_file" "saltmaster_userdata" {
  count    = "${var.instance_count}"
  template = "${file("${path.module}/userdata.sh")}"

  vars {
    hostname   = "${format("%s%02d", var.name, count.index + 1)}"
    saltmaster = "localhost"
    environment = "${var.environment}"
    installtype = "${var.installtype}"
  }
}
# create the salt master
resource "aws_instance" "momentum_salt_master" {
  provider               = "aws.us_dev"
  ami                    = "${var.ami}"
  instance_type          = "${var.instance_type}"
  key_name               = "${var.instance_key_name}"
  vpc_security_group_ids = ["${aws_security_group.momentum_salt_master.id}"]
  subnet_id              = "${element(var.vpc_subnet_ids, count.index)}"
  iam_instance_profile   = "${var.iam_instance_profile}"
  user_data              = "${element(data.template_file.saltmaster_userdata.*.rendered, count.index)}"


  tags {
    Name        = "${element(data.template_file.saltmaster_userdata.*.vars.hostname, count.index)}"
    Environment = "${var.environment}"
    Application = "${var.application}"
    Role        = "SaltMaster"
  }

  root_block_device {
    volume_type           = "gp2"
    volume_size           = 40
    delete_on_termination = true
  }
}

output "private_ip" {
  value = "${aws_instance.momentum_salt_master.private_ip}"
}

---

根据您使用的地形版本，此问题可能已修复，但请尝试更换

"${data.template_file.momentum_cassandra.*.rendered[count.index]}"
"${data.template_file.momentum_cassandra.*.vars.hostname[count.index]}"

在带有

元素的
cassandra.tf
中查找

"${element(data.template_file.momentum_cassandra.*.rendered, count.index)}"
"${element(data.template_file.momentum_cassandra.*.vars.hostname, count.index)}"

您在
saltmaster.tf
中实际使用的是什么？您是否也可以显示您的
saltmaster
模块？您以前读过这个吗@ydaetskcoR我已经用saltmaster模块的内容更新了我的问题。