update
diff --git a/charts/longhorn-1.8.1/templates/priorityclass.yaml b/charts/longhorn-1.8.1/templates/priorityclass.yaml
new file mode 100644
index 0000000..208adc8
--- /dev/null
+++ b/charts/longhorn-1.8.1/templates/priorityclass.yaml
@@ -0,0 +1,9 @@
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+ name: "longhorn-critical"
+ labels: {{- include "longhorn.labels" . | nindent 4 }}
+description: "Ensure Longhorn pods have the highest priority to prevent any unexpected eviction by the Kubernetes scheduler under node pressure"
+globalDefault: false
+preemptionPolicy: PreemptLowerPriority
+value: 1000000000