ES内排除节点：

curl -XPUT 127.0.0.1:9800/_cluster/settings -d '{
  "transient" :{
      "cluster.routing.allocation.exclude._ip" : "10.16.16.30,10.16.16.63"
   }
}'

然后可以用以下命令查看迁移过程：
curl -XGET 'http://localhost:9800/_cat/shards?v'| grep RELOCATING