Add nodeSelector policy for infra components

- Gitea Runner: nodeSelector nodegroup=nd
- Define scheduling policy in config.yaml:
  - infra components → nodegroup: nd
  - monitoring → nodegroup: prometheus
  - workloads excluded from this rule

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

config.yaml

@@ -13,6 +13,17 @@ cluster:
     default: component-nas    # NFS provisioner
     internal: internal-nas
     user: user-nas
+  node_groups:
+    nd: dv2-kr3-ins-nd-worker-01              # 인프라 컴포넌트용
+    prometheus: dv2-kr3-ins-nd-worker-02      # 모니터링용
+
+# ── 스케줄링 정책 ──────────────────────────────
+scheduling:
+  # 워크로드 제외 모든 컴포넌트는 nodeSelector 지정
+  infra_node_selector:
+    nodegroup: nd               # 기본값
+  monitoring_node_selector:
+    nodegroup: prometheus
 
 # ── 컴포넌트 현황 ────────────────────────────
 components:
@@ -29,6 +40,8 @@ components:
     image: gitea/act_runner:latest
     deploy_type: kubernetes         # Deployment + DinD sidecar
     runner_name: mlops-runner
+    node_selector:
+      nodegroup: nd
     labels:
       - ubuntu-latest
       - ubuntu-22.04

gitea-runner/deployment.yaml

@@ -49,6 +49,8 @@ spec:
       labels:
         app: gitea-runner
     spec:
+      nodeSelector:
+        nodegroup: nd
       containers:
         - name: runner
           image: gitea/act_runner:latest