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模拟多组件模板

由于模板不仅可以由多个组件模板组成,还可以由索引模板本身组成,因此有两个模拟 API 来确定最终的索引设置是什么。

模拟将应用于特定索引名称的设置

				POST /_index_template/_simulate_index/my-index-000001
		

模拟将从现有模板应用的设置

				POST /_index_template/_simulate/template_1
		

您还可以在模拟请求中指定模板定义。这使您能够在添加新模板之前验证设置是否会按预期应用。

				PUT /_component_template/ct1
					{
  "template": {
    "settings": {
      "index.number_of_shards": 2
    }
  }
}
				PUT /_component_template/ct2
					{
  "template": {
    "settings": {
      "index.number_of_replicas": 0
    },
    "mappings": {
      "properties": {
        "@timestamp": {
          "type": "date"
        }
      }
    }
  }
}
				POST /_index_template/_simulate
					{
  "index_patterns": ["my*"],
  "template": {
    "settings" : {
        "index.number_of_shards" : 3
    }
  },
  "composed_of": ["ct1", "ct2"]
}
		

响应显示将应用于匹配索引的设置、映射和别名,以及配置将被模拟的模板主体或更高优先级模板所覆盖的任何重叠模板。

{
  "template" : {
    "settings" : {
      "index" : {
        "number_of_shards" : "3",
        "number_of_replicas" : "0",
        "routing" : {
          "allocation" : {
            "include" : {
              "_tier_preference" : "data_content"
            }
          }
        }
      }
    },
    "mappings" : {
      "properties" : {
        "@timestamp" : {
          "type" : "date"
        }
      }
    },
    "aliases" : { }
  },
  "overlapping" : [
    {
      "name" : "template_1",
      "index_patterns" : [
        "my*"
      ]
    }
  ]
}
		
  1. 来自模拟模板主体的分片数量
  2. ct2 组件模板继承的 @timestamp 字段
  3. 任何原本会匹配但优先级较低的重叠模板
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