Elasticsearch 常用REST API

常用的 REST API 向 Elasticsearch 发送数据和其他请求：

1.创建索引生命周期管理 (ILM) 策略

curl -X PUT "localhost:9200/_ilm/policy/log_test_policy/" -H 'Content-Type: application/json' -d'
{
"policy": {
    "phases": {
      "hot": {
        "actions": {
          "rollover": {
            "max_age": "30d",
            "max_size": "100gb"
          }
        }
    },
    "delete": {
       "min_age": "30d",
       "actions": {
        "delete": {}
         }
       }
     }
  }
}

2.创建模板

curl -X PUT "localhost:9200/_template/log_test_template/" -H 'Content-Type: application/json' -d'
{
  "index_patterns": ["log_test-*"],
  "settings": {
    "index.lifecycle.name": "log_test_policy",
    "index.lifecycle.rollover_alias": "log_test",
    "index.number_of_shards": "3",
    "index.number_of_replicas": "1"
  },
  "mappings": {
        "properties": {
			"@timestamp": {
				"type": "date"
			}
        }
  }
}

3.创建一个索引

curl -X PUT "localhost:9200/log_test-000001/" -H 'Content-Type: application/json' -d'
{
 "aliases": {
    "log_test":{
      "is_write_index": true
    }
  }
}

4.删除索引

curl -X DELETE "localhost:9200/log_test-*"

5.获取索引信息

GET /_cat/indices

6.获取某个索引的映射关系

GET /索引名/_mapping

7.使用ILM explain API来监测任务进程

GET /索引名*/_ilm/explain?pretty

8.获取具体某个索引的信息

GET /单个索引名

例如：

 在响应结果中可以查找【creation_date】,对于自动生成的索引，这个字段对应的时候，就是该索引创建的时间。