集群环境描述:Coordinator 节点:172.168.83.11,172.168.83.12,172.168.83.13,172.168.83.15Data 节点:vc1:172.168.83.11,172.168.83.12,172.168.83.15vc2:172.168.83.13,172.168.83.14待缩容的节点IP:172.168.83.15