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 They can only be set at index creation time or on a closed index. dynamic They can be changed on a live index using the update-index-settings API.

详见：https://www.elastic.co/guide/en/elasticsearch/reference/current/index-modules.html#index-modules-settings

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：

POST /my_index/products/_bulk
{ "index": { "_id": 1 }}
{ "price" : 10, "productID" : "XHDK-A-1293-#fJ3" }
{ "index": { "_id": 2 }}
{ "price" : 20, "productID" : "KDKE-B-9947-#kL5" }
{ "index": { "_id": 3 }}
{ "price" : 30, "productID" : "JODL-X-1937-#pV7" }
{ "index": { "_id": 4 }}
{ "price" : 30, "productID" : "QQPX-R-3956-#aD8" }

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}
     
}

ES 创建索引设置（setting）基础

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