Terraform aws eks worker节点现货实例

Question

I am following this blog to run terraform to spin up an eks cluster. https://github.com/berndonline/aws-eks-terraform/blob/master/

I just want to change my ec2 worker node type to spot instance https://github.com/berndonline/aws-eks-terraform/blob/master/eks-worker-nodes.tf I googled and narrowed it down to launch configuration section,

any ideas how to change the ec2 type to spot instance?

Answer 1

Please go through the official document about resource aws_launch_configuration

it gives you the sample on how to set spot instance already:

resource "aws_launch_configuration" "as_conf" {
  image_id      = "${data.aws_ami.ubuntu.id}"
  instance_type = "m4.large"
  spot_price    = "0.001"

  lifecycle {
    create_before_destroy = true
  }
}

Notes:

spot instances price are keep changing depend on the usage. If you are not familiar with it, use the same price of its on-demond price.

Even you set as on-demond price, AWS will only charge you less (normally 5 times less), unless they are used out. But AWS will never charge more.

Please also go through aws document for details: https://aws.amazon.com/ec2/spot/pricing/