Terraform ebs 卷

Question

我是 terraform 的新手，创建了 3 个 ec2 实例，并且创建了 6 个 ebs 卷。我们如何将 2 个 ebs 卷附加到三个实例中的每一个？

#Create 6 EBS volumes and attach 2 per instance.
resource "aws_ebs_volume" "vertica_ebs" {
        count                           = "6"
        availability_zone               = "${var.availability_zone}"
        size                            = "500"
        type                            = "st1"

       }
    }

#Attach ebs volume
resource "aws_volume_attachment" "ebs_att" {
     count = "6"
volume {
     device_name = "/dev/sdf"
     volume_id = "[${element(aws_ebs_volume.vertica_ebs.*.id, count.index)}]"
}
volume{
     device_name = "/dev/sdg"
     volume_id = "[${element(aws_ebs_volume.vertica_ebs.*.id, count.index)}]"
}
     instance_id = "[${element(aws_instance.vertica1.*.id,count.index)}]"
}

错误：

• aws_volume_attachment.ebs_att #2：“设备名称”：未设置必填字段
• aws_volume_attachment.ebs_att #2：“volume_id”：未设置必填字段
• aws_volume_attachment.ebs_att #2: : 无效或未知密钥：volume
• aws_volume_attachment.ebs_att #4：“device_name”：未设置必填字段
• aws_volume_attachment.ebs_att #4：“volume_id”：未设置必填字段
• aws_volume_attachment.ebs_att #4: : 无效或未知密钥：volume
• aws_volume_attachment.ebs_att #3：“device_name”：未设置必填字段
• aws_volume_attachment.ebs_att #3：“volume_id”：未设置必填字段
• aws_volume_attachment.ebs_att #3: : 无效或未知密钥：volume
• aws_volume_attachment.ebs_att #0：“volume_id”：未设置必填字段
• aws_volume_attachment.ebs_att #0：“device_name”：未设置必填字段
• aws_volume_attachment.ebs_att #0: : 无效或未知密钥：volume
• aws_volume_attachment.ebs_att #1：“设备名称”：未设置必填字段
• aws_volume_attachment.ebs_att #1：“volume_id”：未设置必填字段
• aws_volume_attachment.ebs_att #1: : 无效或未知密钥：volume
• aws_volume_attachment.ebs_att #5：“volume_id”：未设置必填字段
• aws_volume_attachment.ebs_att #5：“device_name”：未设置必填字段
• aws_volume_attachment.ebs_att #5: : 无效或未知密钥：volume

Answer 1

注意：此方法将销毁并重新创建服务器。如果您无法接受，请使用'aws volume attachment' method。

解决此问题的一种方法以及解决方法是将 ebs 卷直接附加到实例资源。

您可以通过将“ebs_block_device”元素添加到每个服务器配置，然后运行terraform apply 来做到这一点。例如，您希望添加 2 个 ebs 块设备的每个服务器资源如下所示：

resource "aws_instance""example_instance"{
#INSTANCE CONFIGURATION VALUES  
    ebs_block_device{
      device_name = "/dev/sdf"
      volume_size = 500
      volume_type = "st1"
    }
    ebs_block_device{
      device_name = "/dev/sdg"
      volume_size = 500
      volume_type = "st1"
    }
}

然后运行terraform plan，看到将块设备添加到服务器和服务器。使用这种方法，服务器将被销毁并重新创建。如果这是可以接受的，请运行 terraform apply 以使用附加卷重建服务器。

Check out the documentation around ebs_block_device and aws_instance here.

Answer 2

我会以这种格式做一些事情：

resource "aws_instance" "example" {
  ami           = "${lookup(var.AMIS, var.AWS_REGION)}"
  instance_type = "t2.micro"

}

resource "aws_ebs_volume" "ebs-volume-1" {
    availability_zone = "eu-west-1a"
    size = 500
    type = "st1"
    tags {
        Name = "more volume"
    }
}

resource "aws_ebs_volume" "ebs-volume-2" {
    availability_zone = "eu-west-1a"
    size = 500
    type = "st1"
    tags {
        Name = "more volume"
    }
}

resource "aws_volume_attachment" "ebs-volume-1-attachment" {
  device_name = "/dev/sdf"
  volume_id = "${aws_ebs_volume.ebs-volume-1.id}"
  instance_id = "${aws_instance.example.id}"
}

resource "aws_volume_attachment" "ebs-volume-2-attachment" {
  device_name = "/dev/sdg"
  volume_id = "${aws_ebs_volume.ebs-volume-2.id}"
  instance_id = "${aws_instance.example.id}"
}

希望对你有帮助