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Termination Policy Option to worker ASG (#393)

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* Adding Worker ASG Option for termination_policies, default set to Default

* Adding setting to launch template and mixed

* Updated a few more things per PR notes

* Change termination_policy default from "Default" to ""
This commit is contained in:
Mitch Anderson
2019-06-12 10:11:24 -06:00
committed by Max Williams
parent 8c61f58a01
commit 758fdab1ee
5 changed files with 14 additions and 9 deletions
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1
CHANGELOG.md
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@@ -11,6 +11,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
### Added
- Added Termination Policy Option to worker ASGs (by @undeadops)
- Update EBS optimized instances type (by @gloutsch)
### Changed

1
local.tf
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@@ -44,6 +44,7 @@ locals {
enabled_metrics = "" # A comma delimited list of metrics to be collected i.e. GroupMinSize,GroupMaxSize,GroupDesiredCapacity
placement_group = "" # The name of the placement group into which to launch the instances, if any.
service_linked_role_arn = "" # Arn of custom service linked role that Auto Scaling group will use. Useful when you have encrypted EBS
termination_policies = "" # A comma delimited list of policies to decide how the instances in the auto scale group should be terminated.
# Settings for launch templates
root_block_device_name = "${data.aws_ami.eks_worker.root_device_name}" # Root device name for workers. If non is provided, will assume default AMI was used.

7
workers.tf
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@@ -15,12 +15,13 @@ resource "aws_autoscaling_group" "workers" {
suspended_processes = ["${compact(split(",", coalesce(lookup(var.worker_groups[count.index], "suspended_processes", ""), local.workers_group_defaults["suspended_processes"])))}"]
enabled_metrics = ["${compact(split(",", coalesce(lookup(var.worker_groups[count.index], "enabled_metrics", ""), local.workers_group_defaults["enabled_metrics"])))}"]
placement_group = "${lookup(var.worker_groups[count.index], "placement_group", local.workers_group_defaults["placement_group"])}"
termination_policies = ["${compact(split(",", coalesce(lookup(var.worker_groups[count.index], "termination_policies", ""), local.workers_group_defaults["termination_policies"])))}"]
tags = ["${concat(
list(
map("key", "Name", "value", "${aws_eks_cluster.this.name}-${lookup(var.worker_groups[count.index], "name", count.index)}-eks_asg", "propagate_at_launch", true),
map("key", "kubernetes.io/cluster/${aws_eks_cluster.this.name}", "value", "owned", "propagate_at_launch", true),
map("key", "k8s.io/cluster-autoscaler/${lookup(var.worker_groups[count.index], "autoscaling_enabled", local.workers_group_defaults["autoscaling_enabled"]) == 1 ? "enabled" : "disabled" }", "value", "true", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/${lookup(var.worker_groups[count.index], "autoscaling_enabled", local.workers_group_defaults["autoscaling_enabled"]) == 1 ? "enabled" : "disabled"}", "value", "true", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/${aws_eks_cluster.this.name}", "value", "", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/node-template/resources/ephemeral-storage", "value", "${lookup(var.worker_groups[count.index], "root_volume_size", local.workers_group_defaults["root_volume_size"])}Gi", "propagate_at_launch", false)
),
@@ -38,7 +39,7 @@ resource "aws_launch_configuration" "workers" {
count = "${var.worker_group_count}"
name_prefix = "${aws_eks_cluster.this.name}-${lookup(var.worker_groups[count.index], "name", count.index)}"
associate_public_ip_address = "${lookup(var.worker_groups[count.index], "public_ip", local.workers_group_defaults["public_ip"])}"
security_groups = ["${local.worker_security_group_id}", "${var.worker_additional_security_group_ids}", "${compact(split(",",lookup(var.worker_groups[count.index],"additional_security_group_ids", local.workers_group_defaults["additional_security_group_ids"])))}"]
security_groups = ["${local.worker_security_group_id}", "${var.worker_additional_security_group_ids}", "${compact(split(",", lookup(var.worker_groups[count.index], "additional_security_group_ids", local.workers_group_defaults["additional_security_group_ids"])))}"]
iam_instance_profile = "${element(coalescelist(aws_iam_instance_profile.workers.*.id, data.aws_iam_instance_profile.custom_worker_group_iam_instance_profile.*.name), count.index)}"
image_id = "${lookup(var.worker_groups[count.index], "ami_id", local.workers_group_defaults["ami_id"])}"
instance_type = "${lookup(var.worker_groups[count.index], "instance_type", local.workers_group_defaults["instance_type"])}"
@@ -137,7 +138,7 @@ resource "aws_iam_role" "workers" {
resource "aws_iam_instance_profile" "workers" {
count = "${var.manage_worker_iam_resources ? var.worker_group_count : 0}"
name_prefix = "${aws_eks_cluster.this.name}"
role = "${lookup(var.worker_groups[count.index], "iam_role_id", lookup(local.workers_group_defaults, "iam_role_id"))}"
role = "${lookup(var.worker_groups[count.index], "iam_role_id", lookup(local.workers_group_defaults, "iam_role_id"))}"
path = "${var.iam_path}"
}

7
workers_launch_template.tf
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@@ -14,6 +14,7 @@ resource "aws_autoscaling_group" "workers_launch_template" {
suspended_processes = ["${compact(split(",", coalesce(lookup(var.worker_groups_launch_template[count.index], "suspended_processes", ""), local.workers_group_defaults["suspended_processes"])))}"]
enabled_metrics = ["${compact(split(",", coalesce(lookup(var.worker_groups_launch_template[count.index], "enabled_metrics", ""), local.workers_group_defaults["enabled_metrics"])))}"]
placement_group = "${lookup(var.worker_groups_launch_template[count.index], "placement_group", local.workers_group_defaults["placement_group"])}"
termination_policies = ["${compact(split(",", coalesce(lookup(var.worker_groups_launch_template[count.index], "termination_policies", ""), local.workers_group_defaults["termination_policies"])))}"]
launch_template {
id = "${element(aws_launch_template.workers_launch_template.*.id, count.index)}"
@@ -24,7 +25,7 @@ resource "aws_autoscaling_group" "workers_launch_template" {
list(
map("key", "Name", "value", "${aws_eks_cluster.this.name}-${lookup(var.worker_groups_launch_template[count.index], "name", count.index)}-eks_asg", "propagate_at_launch", true),
map("key", "kubernetes.io/cluster/${aws_eks_cluster.this.name}", "value", "owned", "propagate_at_launch", true),
map("key", "k8s.io/cluster-autoscaler/${lookup(var.worker_groups_launch_template[count.index], "autoscaling_enabled", local.workers_group_defaults["autoscaling_enabled"]) == 1 ? "enabled" : "disabled" }", "value", "true", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/${lookup(var.worker_groups_launch_template[count.index], "autoscaling_enabled", local.workers_group_defaults["autoscaling_enabled"]) == 1 ? "enabled" : "disabled"}", "value", "true", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/${aws_eks_cluster.this.name}", "value", "", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/node-template/resources/ephemeral-storage", "value", "${lookup(var.worker_groups_launch_template[count.index], "root_volume_size", local.workers_group_defaults["root_volume_size"])}Gi", "propagate_at_launch", false)
),
@@ -49,7 +50,7 @@ resource "aws_launch_template" "workers_launch_template" {
security_groups = [
"${local.worker_security_group_id}",
"${var.worker_additional_security_group_ids}",
"${compact(split(",",lookup(var.worker_groups_launch_template[count.index],"additional_security_group_ids", local.workers_group_defaults["additional_security_group_ids"])))}",
"${compact(split(",", lookup(var.worker_groups_launch_template[count.index], "additional_security_group_ids", local.workers_group_defaults["additional_security_group_ids"])))}",
]
}
@@ -95,6 +96,6 @@ resource "aws_launch_template" "workers_launch_template" {
resource "aws_iam_instance_profile" "workers_launch_template" {
count = "${var.manage_worker_iam_resources ? var.worker_group_launch_template_count : 0}"
name_prefix = "${aws_eks_cluster.this.name}"
role = "${lookup(var.worker_groups_launch_template[count.index], "iam_role_id", lookup(local.workers_group_defaults, "iam_role_id"))}"
role = "${lookup(var.worker_groups_launch_template[count.index], "iam_role_id", lookup(local.workers_group_defaults, "iam_role_id"))}"
path = "${var.iam_path}"
}

7
workers_launch_template_mixed.tf
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@@ -14,6 +14,7 @@ resource "aws_autoscaling_group" "workers_launch_template_mixed" {
suspended_processes = ["${compact(split(",", coalesce(lookup(var.worker_groups_launch_template_mixed[count.index], "suspended_processes", ""), local.workers_group_defaults["suspended_processes"])))}"]
enabled_metrics = ["${compact(split(",", coalesce(lookup(var.worker_groups_launch_template_mixed[count.index], "enabled_metrics", ""), local.workers_group_defaults["enabled_metrics"])))}"]
placement_group = "${lookup(var.worker_groups_launch_template_mixed[count.index], "placement_group", local.workers_group_defaults["placement_group"])}"
termination_policies = ["${compact(split(",", coalesce(lookup(var.worker_groups_launch_template_mixed[count.index], "termination_policies", ""), local.workers_group_defaults["termination_policies"])))}"]
mixed_instances_policy {
instances_distribution {
@@ -53,7 +54,7 @@ resource "aws_autoscaling_group" "workers_launch_template_mixed" {
list(
map("key", "Name", "value", "${aws_eks_cluster.this.name}-${lookup(var.worker_groups_launch_template_mixed[count.index], "name", count.index)}-eks_asg", "propagate_at_launch", true),
map("key", "kubernetes.io/cluster/${aws_eks_cluster.this.name}", "value", "owned", "propagate_at_launch", true),
map("key", "k8s.io/cluster-autoscaler/${lookup(var.worker_groups_launch_template_mixed[count.index], "autoscaling_enabled", local.workers_group_defaults["autoscaling_enabled"]) == 1 ? "enabled" : "disabled" }", "value", "true", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/${lookup(var.worker_groups_launch_template_mixed[count.index], "autoscaling_enabled", local.workers_group_defaults["autoscaling_enabled"]) == 1 ? "enabled" : "disabled"}", "value", "true", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/${aws_eks_cluster.this.name}", "value", "", "propagate_at_launch", false),
map("key", "k8s.io/cluster-autoscaler/node-template/resources/ephemeral-storage", "value", "${lookup(var.worker_groups_launch_template_mixed[count.index], "root_volume_size", local.workers_group_defaults["root_volume_size"])}Gi", "propagate_at_launch", false)
),
@@ -74,7 +75,7 @@ resource "aws_launch_template" "workers_launch_template_mixed" {
network_interfaces {
associate_public_ip_address = "${lookup(var.worker_groups_launch_template_mixed[count.index], "public_ip", local.workers_group_defaults["public_ip"])}"
delete_on_termination = "${lookup(var.worker_groups_launch_template_mixed[count.index], "eni_delete", local.workers_group_defaults["eni_delete"])}"
security_groups = ["${local.worker_security_group_id}", "${var.worker_additional_security_group_ids}", "${compact(split(",",lookup(var.worker_groups_launch_template_mixed[count.index],"additional_security_group_ids", local.workers_group_defaults["additional_security_group_ids"])))}"]
security_groups = ["${local.worker_security_group_id}", "${var.worker_additional_security_group_ids}", "${compact(split(",", lookup(var.worker_groups_launch_template_mixed[count.index], "additional_security_group_ids", local.workers_group_defaults["additional_security_group_ids"])))}"]
}
iam_instance_profile {
@@ -117,6 +118,6 @@ resource "aws_launch_template" "workers_launch_template_mixed" {
resource "aws_iam_instance_profile" "workers_launch_template_mixed" {
count = "${var.manage_worker_iam_resources ? var.worker_group_launch_template_mixed_count : 0}"
name_prefix = "${aws_eks_cluster.this.name}"
role = "${lookup(var.worker_groups_launch_template_mixed[count.index], "iam_role_id", lookup(local.workers_group_defaults, "iam_role_id"))}"
role = "${lookup(var.worker_groups_launch_template_mixed[count.index], "iam_role_id", lookup(local.workers_group_defaults, "iam_role_id"))}"
path = "${var.iam_path}"
}