Adapt K8s base manifests for de.NBI Cinder CSI storage

- Switch workspace PVC from ReadWriteMany to ReadWriteOnce with
  cinder-csi storage class (required by de.NBI KKP cluster)
- Increase PVC storage to 500Gi
- Add namespace: openms to kustomization.yaml
- Reduce pod resource requests (1Gi/500m) and limits (8Gi/4 CPU)
  so all workspace-mounting pods fit on a single node

https://claude.ai/code/session_01RNJ3dVjV1VTHcC9ugE3FQJ

Author: claude

k8s/base/kustomization.yaml

@@ -1,6 +1,8 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
+namespace: openms
+
 resources:
   - namespace.yaml
   - configmap.yaml

k8s/base/rq-worker-deployment.yaml

@@ -35,11 +35,11 @@ spec:
               readOnly: true
           resources:
             requests:
-              memory: "4Gi"
-              cpu: "2"
+              memory: "1Gi"
+              cpu: "500m"
             limits:
-              memory: "32Gi"
-              cpu: "8"
+              memory: "8Gi"
+              cpu: "4"
       volumes:
         - name: workspaces
           persistentVolumeClaim:

k8s/base/streamlit-deployment.yaml

@@ -49,11 +49,11 @@ spec:
             periodSeconds: 30
           resources:
             requests:
-              memory: "4Gi"
-              cpu: "2"
+              memory: "1Gi"
+              cpu: "500m"
             limits:
-              memory: "32Gi"
-              cpu: "8"
+              memory: "8Gi"
+              cpu: "4"
       volumes:
         - name: workspaces
           persistentVolumeClaim:

k8s/base/workspace-pvc.yaml

@@ -4,7 +4,8 @@ metadata:
   name: workspaces-pvc
 spec:
   accessModes:
-    - ReadWriteMany
+    - ReadWriteOnce
+  storageClassName: cinder-csi
   resources:
     requests:
-      storage: 100Gi
+      storage: 500Gi