Elasticsearchのインデックス内の全データの削除

削除対象のインデックスの内容

curl -H 'Content-Type: application/json' http://localhost:9200/test/_search\?pretty -d '{"query":{"match_all":{}},"size":0}'
{
  "took" : 6,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : 101,
    "max_score" : 0.0,
    "hits" : [ ]
  }
}

データの削除

_delete_by_queryを使ってデータを削除する。

curl -X POST -H 'Content-Type: application/json' http://localhost:9200/test/_delete_by_query?pretty -d '{"query":{"match_all":{}}}'
{
  "took" : 106,
  "timed_out" : false,
  "total" : 101,
  "deleted" : 101,
  "batches" : 1,
  "version_conflicts" : 0,
  "noops" : 0,
  "retries" : {
    "bulk" : 0,
    "search" : 0
  },
  "throttled_millis" : 0,
  "requests_per_second" : -1.0,
  "throttled_until_millis" : 0,
  "failures" : [ ]
}

削除確認

curl -H 'Content-Type: application/json' http://localhost:9200/test/_search\?pretty -d '{"query":{"match_all":{}},"size":0}'
{
  "took" : 6,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : 0,
    "max_score" : 0.0,
    "hits" : [ ]
  }
}