From b39bb842d82832a8e7289d61f8b319dda64b5293 Mon Sep 17 00:00:00 2001
From: github-clement-bolin <clement.bolin@teads.com>
Date: Sun, 12 Nov 2023 23:30:57 +0100
Subject: [PATCH] chore(NO_CARD): add default provisioner & nodeTemplate

---
 modules/karpenter/nodeTemplate.tf | 22 +++++++++
 modules/karpenter/provisioner.tf  | 43 +++++++++++++++++
 modules/karpenter/variables.tf    | 80 +++++++++++++++++++++++++++++++
 3 files changed, 145 insertions(+)
 create mode 100644 modules/karpenter/nodeTemplate.tf
 create mode 100644 modules/karpenter/provisioner.tf
 create mode 100644 modules/karpenter/variables.tf

diff --git a/modules/karpenter/nodeTemplate.tf b/modules/karpenter/nodeTemplate.tf
new file mode 100644
index 0000000..a333e37
--- /dev/null
+++ b/modules/karpenter/nodeTemplate.tf
@@ -0,0 +1,22 @@
+resource "kubectl_manifest" "aws_node_template" {
+  count = var.create && var.create_kubernetes_resources && var.create_aws_node_template ? 1 : 0
+
+  yaml_body = try(var.aws_node_template.yaml_body, <<-YAML
+    apiVersion: karpenter.k8s.aws/v1alpha1
+    kind: AWSNodeTemplate
+    metadata:
+      name: default
+    spec:
+      subnetSelector:
+        aws-ids: "${join(",", var.subnet_ids)}"
+      securityGroupSelector:
+        karpenter.sh/discovery: ${var.cluster_name}
+      tags:
+        karpenter.sh/discovery: ${var.cluster_name}
+    YAML
+  )
+
+  depends_on = [
+    module.eks_blueprints_addons[0].karpenter
+  ]
+}
diff --git a/modules/karpenter/provisioner.tf b/modules/karpenter/provisioner.tf
new file mode 100644
index 0000000..c01d11a
--- /dev/null
+++ b/modules/karpenter/provisioner.tf
@@ -0,0 +1,43 @@
+resource "kubectl_manifest" "provisioner" {
+  count = var.create && var.create_kubernetes_resources && var.create_provisioner ? 1 : 0
+
+  yaml_body = try(var.provisioner.yaml_body, <<-YAML
+    apiVersion: karpenter.sh/v1alpha5
+    kind: Provisioner
+    metadata:
+      name: ${var.cluster_name}-default
+    spec:
+      requirements:
+        - key: "topology.kubernetes.io/zone"
+          operator: In
+          values: ${jsonencode(var.availability_zones)}
+        - key: karpenter.k8s.aws/instance-category
+          operator: In
+          values: ["c", "m", "r"]
+        - key: karpenter.k8s.aws/instance-generation
+          operator: Gt
+          values: ["2"]
+        - key: kubernetes.io/arch
+          operator: In
+          values: ["arm64", "amd64"]
+        - key: "karpenter.sh/capacity-type" # If not included, the webhook for the AWS cloud provider will default to on-demand
+          operator: In
+          values: ["spot", "on-demand"]
+      kubeletConfiguration:
+        containerRuntime: containerd
+        maxPods: 110
+      limits:
+        resources:
+          cpu: 1000
+      consolidation:
+        enabled: true
+      providerRef:
+        name: default
+      ttlSecondsUntilExpired: 2592000 # 30 Days = 60 * 60 * 24 * 30 Seconds
+    YAML
+  )
+
+  depends_on = [
+    module.eks_blueprints_addons[0].karpenter
+  ]
+}
\ No newline at end of file
diff --git a/modules/karpenter/variables.tf b/modules/karpenter/variables.tf
new file mode 100644
index 0000000..aeaed76
--- /dev/null
+++ b/modules/karpenter/variables.tf
@@ -0,0 +1,80 @@
+variable "env" {
+  description = "Environnement where the stack is running"
+  type        = string
+}
+
+variable "service" {
+  description = "Service using this module"
+  type        = string
+}
+
+variable "cluster_name" {
+  description = "Name of the EKS cluster"
+  type        = string
+}
+
+variable "cluster_endpoint" {
+  description = "Endpoint for your Kubernetes API server"
+  type        = string
+}
+
+variable "cluster_version" {
+  description = "Kubernetes `<major>.<minor>` version to use for the EKS cluster (i.e.: `1.24`)"
+  type        = string
+}
+
+variable "oidc_provider_arn" {
+  description = "The ARN of the cluster OIDC Provider"
+  type        = string
+}
+
+variable "create" {
+  description = "Controls if resources should be created (affects all resources)"
+  type        = bool
+  default     = true
+}
+
+variable "karpenter" {
+  description = "Karpenter add-on configuration values"
+  type        = any
+  default     = {}
+}
+
+variable "create_aws_node_template" {
+  type        = bool
+  default     = true
+}
+
+variable "subnet_ids" {
+  type        = list(string)
+}
+
+variable "aws_node_template" {
+  type        = any
+  default     = {}
+}
+
+variable "create_provisioner" {
+  type        = bool
+  default     = true
+}
+
+variable "availability_zones" {
+  type        = list(string)
+}
+
+variable "provisioner" {
+  description = "Provisioner configuration values"
+  type        = any
+  default     = {}
+}
+
+variable "create_delay_dependencies" {
+  type        = list(string)
+  default     = []
+}
+
+variable "create_kubernetes_resources" {
+  type        = bool
+  default     = true
+}