Elasticsearch重启前禁止分片移动的方法

重启集群前，先设置集群停止分片移动：

curl -XPUT http://localhost:9200/_cluster/settings -d '{
"transient" : {
"cluster.routing.allocation.enable" : "none"
}
}'

重启之后，恢复分片自动分配：

curl -XPUT http://localhost:9200/_cluster/settings -d '{
"transient" : {
"cluster.routing.allocation.enable" : "all"
}
}'

参考：
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