feat: adding k8s test for no-shared storage

.github/workflows/ci.yml

@@ -234,6 +234,30 @@ jobs:
         timeout 30 bash -c 'until curl -s http://localhost:8001/health; do sleep 1; done' || echo "Health check failed (expected for gRPC)"
         docker stop test-server || true
 
+  k8s-grpc-test:
+    name: Kubernetes gRPC Transfer Test
+    runs-on: ubuntu-latest
+    needs: test
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Install kubectl
+      run: |
+        curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
+        chmod +x kubectl
+        sudo mv kubectl /usr/local/bin/
+
+    - name: Install Helm
+      run: |
+        curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash
+
+    - name: Run gRPC transfer K8s test
+      run: |
+        chmod +x test_grpc_transfer_k8s.sh
+        ./test_grpc_transfer_k8s.sh
+
   benchmark:
     name: Performance Benchmarks
     runs-on: ubuntu-latest
@@ -263,7 +287,7 @@ jobs:
   release:
     name: Create Release
     runs-on: ubuntu-latest
-    needs: [test, integration-test, security-audit, docker-build]
+    needs: [test, integration-test, security-audit, docker-build, k8s-grpc-test]
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
 
     steps:
@@ -306,7 +330,7 @@ jobs:
   notify:
     name: Notify on Failure
     runs-on: ubuntu-latest
-    needs: [test, integration-test, security-audit, docker-build]
+    needs: [test, integration-test, security-audit, docker-build, k8s-grpc-test]
     if: failure()
 
     steps:

helm/values-local-storage.yaml

@@ -0,0 +1,99 @@
+# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+# Values for testing gRPC file transfer without shared storage (no PVC)
+# This configuration uses emptyDir volumes instead of PersistentVolumeClaims,
+# which means the server and client have isolated storage and must transfer
+# files via gRPC streaming.
+
+replicaCount: 1
+
+image:
+  repository: modelexpress
+  pullPolicy: IfNotPresent
+  tag: "test"
+
+# No image pull secrets needed for local testing
+imagePullSecrets: []
+
+serviceAccount:
+  create: true
+  annotations: {}
+
+podAnnotations: {}
+
+podLabels: {}
+
+# Disable security context for local testing - allow running as root
+podSecurityContext: {}
+
+securityContext:
+  runAsNonRoot: false
+
+service:
+  type: ClusterIP
+  port: 8001
+
+ingress:
+  enabled: false
+
+# Minimal resources for testing
+resources:
+  limits:
+    cpu: 500m
+    memory: 512Mi
+  requests:
+    cpu: 100m
+    memory: 256Mi
+
+# Disable PVC-based persistence - use emptyDir instead
+persistence:
+  enabled: false
+
+# Use emptyDir for ephemeral storage (server-side cache)
+extraVolumes:
+  - name: model-cache
+    emptyDir:
+      sizeLimit: 2Gi
+
+extraVolumeMounts:
+  - name: model-cache
+    mountPath: /root
+
+env:
+  MODEL_EXPRESS_SERVER_PORT: "8001"
+  MODEL_EXPRESS_LOGGING_LEVEL: "debug"
+  MODEL_EXPRESS_DATABASE_PATH: "/tmp/models.db"
+  MODEL_EXPRESS_CACHE_DIRECTORY: "/root"
+  # Note: HOME is set to /root so HuggingFace cache uses /root/.cache/huggingface
+  HOME: "/root"
+
+livenessProbe:
+  enabled: true
+  tcpSocket:
+    port: 8001
+  initialDelaySeconds: 10
+  periodSeconds: 10
+  timeoutSeconds: 5
+  failureThreshold: 3
+
+readinessProbe:
+  enabled: true
+  tcpSocket:
+    port: 8001
+  initialDelaySeconds: 5
+  periodSeconds: 5
+  timeoutSeconds: 3
+  failureThreshold: 3
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}
+
+extraEnv: []
+
+args: []
+
+command: []