diff --git a/charts/skypilot/values.yaml b/charts/skypilot/values.yaml
index 90aa6f881a2..910e2fc5714 100644
--- a/charts/skypilot/values.yaml
+++ b/charts/skypilot/values.yaml
@@ -123,6 +123,12 @@ apiService:
     requests:
       cpu: "4"
       memory: "8Gi"
+      # not much ephemeral-storage is needed when 
+      # persistent storage is enabled.
+      # However, when ephemeral storage is used
+      # (e.g. to enable rollingUpdate), 
+      # it is recommended to set a larger value.
+      ephemeral-storage: "10Gi"
     limits:
       cpu: "4"
       memory: "8Gi"