elasticsearch集群健康狀態查看

1. 查看ES集群健康狀態

http://localhost:9200/_cluster/health?pretty
響應：
{
  "cluster_name" : "if2c",
  "status" : "yellow",   //集群的狀態紅綠燈，綠：健康，黃：亞健康，紅：病態
  "timed_out" : false,
  "number_of_nodes" : 1, //節點數
  "number_of_data_nodes" : 1, //數據節點數
  "active_primary_shards" : 3, //分片數，3個Index庫
  "active_shards" : 3,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 3  //未指定節點，配置了復本，僅使用一台機器部署會出現這種情況
}

查看指定索引庫的健康狀態
http://localhost:9200/_cluster/health/index_name?pretty
http://localhost:9200/_cluster/health/index_name,index_name2?pretty