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6월 3일 (일) TIL

ElasticSearch 에서 index 의 alias 를 변경하는 방법을 알아보았다.

Alias 확인

먼저 ElasticSearch 클러스터에 /_alias 로 접속하면 현재 생성된 인덱스 들과 연결된 alias 를 확인할 수 있다.

{
  "activity-log-index": {
    "aliases": {

    }
  },
  "my-contents-index-v1": {
    "aliases": {
      "contents": {

      }
    }
  },
  "my-contents-index-v2": {
    "aliases": {

    }
  }
}

현재 my-contents-index-v1 이라는 인덱스에 contents 라는 alias 가 부여되어 있다. 이를 my-contents-index-v2 으로 교체해보겠다.

curl -XPOST 'http://my-elasticsearch-host:9200/_aliases?pretty' -d'
{
    "actions" : [
        { "remove" : { "index" : "my-contents-index-v1", "alias" : "contents" } },
        { "add" : { "index" : "my-contents-index-v2", "alias" : "contents" } }
    ]
}'

한번의 쿼리를 통해서 my-contents-index-v1 에서는 alias 가 삭제되고 my-contents-index-v2 에는 alias 가 추가되었다.

이후 다시 /_alias 로 확인해보면 변경된 결과를 확인가능하다

{
  "activity-log-index": {
    "aliases": {

    }
  },
  "my-contents-index-v1": {
    "aliases": {

    }
  },
  "my-contents-index-v2": {
    "aliases": {
      "contents": {

      }
    }
  }
}

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