docs(addon): add node affinity section for nvidia-driver-toolkit

docs/advanced/addons/nvidiadrivertoolkit.md

@@ -46,4 +46,42 @@ kubectl annotate nodes {node name} sriovgpu.harvesterhci.io/custom-driver=https:
 
 The nvidia-driver-toolkit installs the specified driver version upon starting.
 
-If an NVIDIA driver was previously installed, you must restart the pod to trigger the installation process again.
+If an NVIDIA driver was previously installed, you must restart the pod to trigger the installation process again.
+
+## Advanced Node Scheduling with Node Affinity
+
+_Available as of v1.8.0_
+
+Starting from v1.8.0, the nvidia-driver-toolkit uses Kubernetes `nodeAffinity` for more flexible node scheduling.
+
+### Customizing Node Affinity
+
+You can customize the node affinity settings to meet your specific requirements. For example:
+
+**Example: Install on nodes with specific GPU models**
+
+```yaml
+affinity:
+  nodeAffinity:
+    requiredDuringSchedulingIgnoredDuringExecution:
+      nodeSelectorTerms:
+      - matchExpressions:
+        - key: sriovgpu.harvesterhci.io/driver-needed
+          operator: In
+          values:
+          - "true"
+        - key: gpu.model
+          operator: In
+          values:
+          - "A100"
+          - "A40"
+```
+
+### Applying Custom Node Affinity
+
+To apply custom node affinity settings:
+
+1. Edit the nvidia-driver-toolkit addon configuration through the Harvester UI or by editing the Helm values
+2. Update the `affinity` section with your desired configuration
+3. Save the changes - the DaemonSet will be updated automatically
+