ES 创建索引设置(setting)基础
1.创建索引
PUT /my_index
{
    "settings": { ... any settings ... },
    "mappings": {
        "type_one": { ... any mappings ... },
        "type_two": { ... any mappings ... },
        ...
    }
} 
如果你想禁止自动创建索引,你 可以通过在
config/elasticsearch.yml 
 的每个节点下添加下面的配置: 
action.auto_create_index: false
2.索引设置
索引设置分为static 和dynamic,
static详见:
修改分片和副本数:PUT  /my_index
{
   "number_of_replicas":0,
   "number_of_shards":1
}  
 动态设置:
PUT  /my_index/_settings  
{  
    "index" : {
   "number_of_replicas":0
    }
} 
 2.1 创建my_index 索引
使用默认配置:
查看该索引的设置: 5个分片,一个副本
GET /my_index/_settings
{
   "my_index": {
      "settings": {
         "index": {
            "creation_date": "1507996404894",
            "number_of_shards": "5",
            "number_of_replicas": "1",
            "uuid": "q3xU7mMKTUKmqEq4FUsswA",
            "version": {
               "created": "5050199"
            },
            "provided_name": "my_index"
         }
      }
   }
}   head 查看如下:    
 修改副本数量:(分片数不能动态修改)
PUT /my_index/_settings
{
     "number_of_replicas":0
}
----------------------
{
   "acknowledged": true
}  
 副本删除了:
一次修改所有的索引副本数量:(强迫症,自己的虚拟机本来是2个节点的集群的,但每次只启动一台,所以建索引都是按照默认2个副本,不想你改配置,所以,又不想再head 上看到黄色的标识!!用下面全部修改下,线上环境慎用!)
PUT /_all/_settings
{
    "index": {"number_of_replicas":0}
     
} 
 
