PERF(authentik): increase replicas for HA

- Traefik, CoreDNS, Authentik
- Traefik: 2 replicas
- CoreDNS: 2 replicas (new HelmChartConfig)
- Authentik: 2 replicas for server and worker
- Vault: Keep file storage (standalone)

traefik/coredns-config.yaml

@@ -0,0 +1,9 @@
+apiVersion: helm.cattle.io/v1
+kind: HelmChartConfig
+metadata:
+  name: coredns
+  namespace: kube-system
+spec:
+  valuesContent: |-
+    # High Availability - 2 replicas
+    replicaCount: 2

traefik/helm-values.yaml

@@ -5,6 +5,10 @@ metadata:
   namespace: kube-system
 spec:
   valuesContent: |-
+    # 2 replicas
+    deployment:
+      replicas: 2
+
     # Traefik Dashboard 활성화
     dashboard:
       enabled: true

traefik/kustomization.yaml

@@ -3,4 +3,5 @@ kind: Kustomization
 
 resources:
   - helm-values.yaml
+  - coredns-config.yaml
   - ingress.yaml