Forked from cablespaghetti/gist:54de0ae93449e4698f0206a0e85514be
Created
September 25, 2019 10:27
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Example terraform for ASG with spot instances
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# | |
# Configuration for Autoscaling group. | |
# | |
resource "aws_launch_template" "eks-cluster-worker-nodes" { | |
iam_instance_profile = { name = "${aws_iam_instance_profile.eks-cluster-worker-nodes.name}" } | |
image_id = "${data.aws_ami.eks-worker.id}" | |
name = "${var.cluster-name}-eks-cluster-worker-nodes" | |
vpc_security_group_ids = ["${aws_security_group.eks-cluster-worker-nodes.id}"] | |
key_name = "${var.ssh-key-name}" | |
instance_type = "${local.host-types[0]}" | |
user_data = "${base64encode(element(data.template_file.userdata.*.rendered, count.index))}" | |
monitoring = { enabled = "${var.enable-spot == "true" ? false : true}" } # Enable if enable-spot isn't true | |
ebs_optimized = "${lookup(local.ebs_optimized, local.host-types[0], false)}" | |
block_device_mappings { | |
device_name = "/dev/xvda" | |
ebs { | |
volume_size = 50 | |
} | |
} | |
lifecycle { | |
create_before_destroy = true | |
} | |
} | |
resource "aws_autoscaling_group" "eks-cluster-worker-nodes-spot" { | |
count = "${var.enable-spot == "true" ? 1 : 0}" | |
max_size = "${var.max-host-count}" | |
min_size = "${var.min-host-count}" | |
name = "${var.cluster-name}" | |
vpc_zone_identifier = "${local.subnet-ids}" | |
mixed_instances_policy { | |
instances_distribution { | |
on_demand_percentage_above_base_capacity = 0 | |
spot_instance_pools = 2 | |
} | |
launch_template { | |
launch_template_specification { | |
launch_template_id = "${aws_launch_template.eks-cluster-worker-nodes.id}" | |
version = "$$Latest" | |
} | |
override { | |
instance_type = "${local.host-types[0]}" | |
} | |
override { | |
instance_type = "${local.host-types[1]}" | |
} | |
} | |
} | |
tag { | |
key = "Name" | |
value = "${var.cluster-name}" | |
propagate_at_launch = true | |
} | |
tag { | |
key = "Environment" | |
value = "${var.cluster-name}" | |
propagate_at_launch = true | |
} | |
tag { | |
key = "kubernetes.io/cluster/${var.cluster-name}" | |
value = "owned" | |
propagate_at_launch = true | |
} | |
tag { | |
key = "k8s.io/cluster-autoscaler/enabled" | |
value = "true" | |
propagate_at_launch = true | |
} | |
} |
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