diff --git a/src/adapter/storage.c b/src/adapter/storage.c
index e176d6ce..030152c6 100644
--- a/src/adapter/storage.c
+++ b/src/adapter/storage.c
@@ -125,7 +125,7 @@ int adapter_load_setting(const char *node, char **setting)
 {
     int rv = neu_persister_load_node_setting(node, (const char **) setting);
     if (0 != rv) {
-        nlog_error("load %s setting fail", node);
+        nlog_warn("load %s setting fail", node);
         return -1;
     }
 
diff --git a/src/persist/persist.c b/src/persist/persist.c
index f93c7f88..bb38a09f 100644
--- a/src/persist/persist.c
+++ b/src/persist/persist.c
@@ -599,11 +599,20 @@ void neu_persister_destroy()
 
 int neu_persister_store_node(neu_persist_node_info_t *info)
 {
-    int rv =
-        execute_sql(global_db,
-                    "INSERT INTO nodes (name, type, state, plugin_name) "
-                    "VALUES (%Q, %i, %i, %Q)",
-                    info->name, info->type, info->state, info->plugin_name);
+    int rv = 0;
+    if (strcmp(info->plugin_name, "Monitor") == 0) {
+        rv = execute_sql(
+            global_db,
+            "INSERT OR IGNORE INTO nodes (name, type, state, plugin_name) "
+            "VALUES (%Q, %i, %i, %Q)",
+            info->name, info->type, info->state, info->plugin_name);
+    } else {
+        rv =
+            execute_sql(global_db,
+                        "INSERT INTO nodes (name, type, state, plugin_name) "
+                        "VALUES (%Q, %i, %i, %Q)",
+                        info->name, info->type, info->state, info->plugin_name);
+    }
     if (0 == rv) {
         node_count_add(1);
     }