fix: Enable argocd to manage kube-prometheus-stack (aws-ia#1295)

Co-authored-by: Zvika Nadav <[email protected]>

Author: jaydeland

docs/add-ons/kube-prometheus-stack.md

@@ -41,3 +41,13 @@ Be aware that it is likely necessary to update the CRDs when updating the Chart
 
 
 For complete project documentation, please visit the [kube-prometheus-stack Github repository](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack).
+
+### GitOps Configuration
+
+The following properties are made available for use when managing the add-on via GitOps.
+
+```hcl
+kubePrometheusStack = {
+  enable = true
+}
+```

modules/kubernetes-addons/kube-prometheus-stack/main.tf

@@ -27,5 +27,6 @@ module "helm_addon" {
     },
     var.helm_config
   )
-  addon_context = var.addon_context
+  manage_via_gitops = var.manage_via_gitops
+  addon_context     = var.addon_context
 }

modules/kubernetes-addons/kube-prometheus-stack/variables.tf

@@ -4,6 +4,12 @@ variable "helm_config" {
   default     = {}
 }
 
+variable "manage_via_gitops" {
+  description = "Determines if the add-on should be managed via GitOps."
+  type        = bool
+  default     = false
+}
+
 variable "addon_context" {
   description = "Input configuration for the addon"
   type = object({

modules/kubernetes-addons/locals.tf

@@ -33,6 +33,7 @@ locals {
     argoWorkflows             = var.enable_argo_workflows ? module.argo_workflows[0].argocd_gitops_config : null
     karpenter                 = var.enable_karpenter ? module.karpenter[0].argocd_gitops_config : null
     kubernetesDashboard       = var.enable_kubernetes_dashboard ? module.kubernetes_dashboard[0].argocd_gitops_config : null
+    kubePrometheusStack       = var.enable_kube_prometheus_stack ? module.kube_prometheus_stack[0].argocd_gitops_config : null
     awsCloudWatchMetrics      = var.enable_aws_cloudwatch_metrics ? module.aws_cloudwatch_metrics[0].argocd_gitops_config : null
     externalDns               = var.enable_external_dns ? module.external_dns[0].argocd_gitops_config : null
     externalSecrets           = var.enable_external_secrets ? module.external_secrets[0].argocd_gitops_config : null

modules/kubernetes-addons/main.tf

@@ -371,10 +371,11 @@ module "ondat" {
 }
 
 module "kube_prometheus_stack" {
-  count         = var.enable_kube_prometheus_stack ? 1 : 0
-  source        = "./kube-prometheus-stack"
-  helm_config   = var.kube_prometheus_stack_helm_config
-  addon_context = local.addon_context
+  count             = var.enable_kube_prometheus_stack ? 1 : 0
+  source            = "./kube-prometheus-stack"
+  helm_config       = var.kube_prometheus_stack_helm_config
+  manage_via_gitops = var.argocd_manage_add_ons
+  addon_context     = local.addon_context
 }
 
 module "portworx" {