Update csi-debug.md

Author: andyzhangx

docs/csi-debug.md

@@ -37,6 +37,10 @@ kubectl logs csi-blob-node-cvgbs -c blob -n kube-system > csi-blob-node.log
 > note: to watch logs in realtime from multiple `csi-blob-node` DaemonSet pods simultaneously, run the command:
 > ```console
 > kubectl logs daemonset/csi-blob-node -c blob -n kube-system -f
+> ```
+> get blobfuse-proxy logs on the node
+> ```console
+> journalctl -u blobfuse-proxy -l
 > ```
 
  - check blobfuse mount inside driver