重啓集羣前，先設置集羣停止分片移動：
curl -XPUT http://localhost:9200/_cluster/settings -d '{
"transient" : {
"cluster.routing.allocation.enable" : "none"
}
}'
重啓之後，恢復分片自動分配：
curl -XPUT http://localhost:9200/_cluster/settings -d '{
"transient" : {
"cluster.routing.allocation.enable" : "all"
}
}'
參考：
https://blog.csdn.net/an74520/article/details/42871023
https://www.elastic.co/guide/en/elasticsearch/reference/current/shards-allocation.html#_shard_allocation_settings
https://blog.csdn.net/YxSimple/article/details/50725978