Use try when watching health value in NodeInstance

node-daemon/pvcnoded/objects/NodeInstance.py

@@ -225,6 +225,8 @@ class NodeInstance(object):
                         )
                         self.flush_thread.start()
 
+        try:
+
             @self.zkhandler.zk_conn.DataWatch(
                 self.zkhandler.schema.path("node.monitoring.health", self.name)
             )
@@ -247,6 +249,9 @@ class NodeInstance(object):
                 if data != self.health:
                     self.health = data
 
+        except Exception:
+            pass
+
         @self.zkhandler.zk_conn.DataWatch(
             self.zkhandler.schema.path("node.memory.free", self.name)
         )