解决Elasticsearch集群状态黄色，unassigned INDEX_CREATED

#查看集群状态
curl -XGET "http://ip:port/_cluster/health?pretty"
{
  "cluster_name" : "log4x-cluster02",
  "status" : "yellow",
  "timed_out" : false,
  "number_of_nodes" : 26,
  "number_of_data_nodes" : 13,
  "active_primary_shards" : 1747,
  "active_shards" : 5163,
  "relocating_shards" : 0,
  "initializing_shards" : 0, 
  "unassigned_shards" : 26,  #未分配的分片数
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 99.49894006552323
}

#查看UNASSIGNED状态的索引
curl -XGET "http://ip:port/_cat/shards?h=index,shard,prirep,state,unassigned.reason"|grep UNASSIGNED

#查看索引的分片数number_of_replicas
curl -XGET "ip:port/索引名/_settings"

#重新分配副本
curl -XPUT -H "Content-Type:application/json" "ip:port/索引名/_settings" -d '{"number_of_replicas": 0}'
curl -XPUT -H "Content-Type:application/json" "ip:port/索引名/_settings" -d '{"number_of_replicas": 2}'

#查看重新分配分片的信息（初始化）
curl -XGET "http://ip:port/_cat/shards?v"|grep INITIALIZING

curl -XGET "http://ip:port/_cluster/health?pretty"
{
  "cluster_name" : "log4x-cluster02",
  "status" : "yellow",
  "timed_out" : false,
  "number_of_nodes" : 26,
  "number_of_data_nodes" : 13,
  "active_primary_shards" : 1747,
  "active_shards" : 5163,
  "relocating_shards" : 0,
  "initializing_shards" : 26,  #重新分配初始化的分片数，这个数变成0，集群green
  "unassigned_shards" : 0,     #未分配的分片数
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 99.49894006552323
}