reduce CPU pressure (#5)

this reduces Nginx, argo, kargo, and EKS addon cpu requests.
a combination of helm change, terrafor, and akuity kustomizations are used

Author: eddiewebb

akuity-bootstrap/main.tf

@@ -335,12 +335,14 @@ resource "akp_cluster" "eks-cluster" {
       }
     }
   }
+  
 
   name      = data.terraform_remote_state.eks_clusters.outputs.primary_cluster_name
   namespace = "akuity"
   spec = {
     data = {
       size = "medium"
+      kustomization = file("${path.module}/templates/argo-cluster-kustomization.yaml")
     }
   }
   depends_on = [akp_instance.se-demo-iac]

akuity-bootstrap/templates/argo-cluster-kustomization.yaml

@@ -0,0 +1,70 @@
+# This file reduces CPU requests to relieve scheduling pressure on the cluster.
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+patches:
+  - target:
+      group: apps
+      version: v1
+      kind: Deployment
+      name: argocd-application-controller
+      namespace: akuity
+    patch: |-
+      apiVersion: apps/v1
+      kind: Deployment
+      metadata:
+        name: argocd-application-controller
+        namespace: akuity
+      spec:
+        template:
+          spec:
+            containers:
+              - name: syncer
+                resources:
+                  requests:
+                    cpu: 50m
+              - name: argocd-application-controller
+                resources:
+                  requests:
+                    cpu: 100m
+  - target:
+      group: apps
+      version: v1
+      kind: Deployment
+      name: argocd-repo-server
+      namespace: akuity
+    patch: |-
+      apiVersion: apps/v1
+      kind: Deployment
+      metadata:
+        name: argocd-application-controller
+        namespace: akuity
+      spec:
+        template:
+          spec:
+            replicas: 1
+            containers:
+              - name: argocd-repo-server
+                resources:
+                  requests:
+                    cpu: 50m
+  - target:
+      group: apps
+      version: v1
+      kind: Deployment
+      name: kargo-controller-sedemo-primary
+      namespace: akuity
+    patch: |-
+      apiVersion: apps/v1
+      kind: Deployment
+      metadata:
+        name: kargo-controller-sedemo-primary
+        namespace: akuity
+      spec:
+        template:
+          spec:
+            replicas: 1
+            containers:
+              - name: controller
+                resources:
+                  requests:
+                    cpu: 100m

core-env/eks-clusters/main.tf

@@ -46,8 +46,23 @@ module "eks" {
   enable_irsa = true
 
   addons = {
-    coredns    = {}
-    kube-proxy = {}
+    coredns    = {
+      configuration_values = jsonencode({
+        resources = {
+          requests = {
+            cpu    = "50m"
+          }
+        }
+      })
+    }
+    kube-proxy = {
+      configuration_values = jsonencode({
+        resources = {
+          requests = {
+            cpu    = "50m"
+          }
+        }
+      })}
     vpc-cni = {
       before_compute = true
       most_recent    = true # To ensure access to the latest settings provided
@@ -83,7 +98,6 @@ module "eks" {
     }
 
 
-
   }
   # Allow kubectl access via AWS SSO credentials
   access_entries = {

core-env/eks-clusters/nginx-helm/values.yaml

@@ -399,7 +399,7 @@ controller:
     ##    cpu: 100m
     ##    memory: 90Mi
     requests:
-      cpu: 100m
+      cpu: 10m
       memory: 90Mi
   # Mutually exclusive with keda autoscaling
   autoscaling: