feat: migrate elastic-system to ArgoCD

Migrate ECK operator from Terragrunt to ArgoCD/Kustomize.
Deploys eck-operator v3.2.0 with 2 replicas and PodDisruptionBudget
in the elastic-system namespace.

💘 Generated with Crush

Assisted-by: Claude Sonnet 4.6 via Crush <crush@charm.land>

apps/base/elastic-system/kustomization.yaml

@@ -0,0 +1,6 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - namespace.yaml

apps/base/elastic-system/namespace.yaml

@@ -0,0 +1,7 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    app.kubernetes.io/name: elastic-system
+  name: elastic-system

apps/overlays/au-syd1/elastic-system/kustomization.yaml

@@ -0,0 +1,16 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: elastic-system
+
+resources:
+  - ../../../base/elastic-system
+
+helmCharts:
+  - name: eck-operator
+    repo: https://helm.elastic.co
+    version: "3.2.0"
+    releaseName: elastic-operator
+    namespace: elastic-system
+    valuesFile: values.yaml

apps/overlays/au-syd1/elastic-system/values.yaml

@@ -0,0 +1,11 @@
+replicaCount: 2
+resources:
+  limits:
+    cpu: 1
+    memory: 1Gi
+  requests:
+    cpu: 10m
+    memory: 150Mi
+podDisruptionBudget:
+  enabled: true
+  minAvailable: 1

argocd/applicationsets/platform.yaml

@@ -12,16 +12,17 @@ spec:
       directories:
       - path: apps/overlays/*/artifactapi
       - path: apps/overlays/*/cattle-system
-      - path: apps/overlays/*/certificates
       - path: apps/overlays/*/cert-manager
+      - path: apps/overlays/*/certificates
       - path: apps/overlays/*/cnpg-system
+      - path: apps/overlays/*/elastic-system
       - path: apps/overlays/*/externaldns
       - path: apps/overlays/*/inteldeviceplugins-system
+      - path: apps/overlays/*/jfrog
       - path: apps/overlays/*/node-feature-discovery
+      - path: apps/overlays/*/puppet
       - path: apps/overlays/*/reflector-system
       - path: apps/overlays/*/reloader-system
-      - path: apps/overlays/*/jfrog
-      - path: apps/overlays/*/puppet
       - path: apps/overlays/*/woodpecker
   template:
     metadata:

argocd/projects/platform.yaml

@@ -8,14 +8,15 @@ spec:
   description: Platform infrastructure and core services
   sourceRepos:
     - https://git.unkin.net/unkin/argocd-apps
+    - https://charts.jetstack.io
+    - https://cloudnative-pg.github.io/charts
+    - https://helm.elastic.co
+    - https://intel.github.io/helm-charts/
+    - https://kubernetes-sigs.github.io/external-dns/
+    - https://releases.rancher.com/server-charts/stable
+    - oci://gcr.io/k8s-staging-nfd/charts
     - oci://ghcr.io/emberstack/helm-charts
     - oci://ghcr.io/woodpecker-ci/helm/woodpecker
-    - https://releases.rancher.com/server-charts/stable
-    - https://charts.jetstack.io
-    - https://kubernetes-sigs.github.io/external-dns/
-    - https://cloudnative-pg.github.io/charts
-    - oci://gcr.io/k8s-staging-nfd/charts
-    - https://intel.github.io/helm-charts/
   destinations:
     - namespace: '*-system'
       server: https://kubernetes.default.svc