如何为EC2、安全组和ebs卷执行for_each和for循环

Question

我是Terraform的新手，想知道是否有办法做到这一点。我想用它自己的安全组创建多个EC2实例，并附加不同大小和类型的卷。

module "ec2_sg" {
source              = "../../modules/sgs"
for_each            = var.ec2_info
name                = each.value.name
description         = "Security group for ${each.value.name}"
vpc_id              = each.value.vpc
ingress_cidr_blocks = each.value.ingress_cidr_blocks
ingress_rules       = each.value.ingress_rules
egress_cidr_blocks  = each.value.egress_cidr_blocks
egress_rules        = each.value.egress_rules
}
module "ec2_instance" {
source = "../../modules/ec2"
for_each                    = var.ec2_info
name                        = each.value.name
ami                         = var.AMIS.linux_ami
instance_type               = each.value.ec2_instance_type
vpc_security_group_ids      = module.ec2_sg.security_group_id[each.key]
}
resource "aws_ebs_volume" "volume_disk" {
for_each          = var.ec2_info
type              = each.value.type
iops              = each.value.iops
availability_zone = each.value.availability_zone
size              = each.value.size
}
resource "aws_volume_attachment" "volume_disk" {
for_each    = var.ec2_info
device_name = each.value.device_name
volume_id   = aws_ebs_volume.data1[each.key].id
instance_id = module.ec2_instance.id[each.key]
}

这是我到目前为止已经尝试过的，但我无法让音量部分发挥作用。ec2_info包含关于我要创建的2个不同ec2实例的信息。我应该做什么样的数据操作来实现这一点？你认为对磁盘使用单独的变量会实现这一点吗？类似于：

resource "aws_ebs_volume" "volume_disk" {
for_each          = var.disks_info
type              = each.value.type
iops              = each.value.iops
availability_zone = each.value.availability_zone
size              = each.value.size
}
resource "aws_volume_attachment" "volume_disk" {
for_each    = var.disks_info
device_name = each.value.device_name
volume_id   = aws_ebs_volume.data1[each.key].id
instance_id = module.ec2_instance.id[each.key]
}

但如果我这样做？如何确保每个磁盘都连接到预期的EC2实例？非常感谢。

Answer 1

您可以尝试使用；计数"；参数

https://www.terraform.io/docs/language/meta-arguments/count.html