How can I view the contents of an ElasticSearch index

Question

I configured a custom analyzer and put some documents into the index  Now I want to debug my settings so I can see which n-grams actually made it into the index   When I used Solr before  there was a possibility to see which strings were saved in the index as keys and also their frequency

User · Answer

You can view any existing index by using the below CURL. Please replace the index-name with your actual name before running and it will run as is.

View the index content

curl -H 'Content-Type: application/json' -X GET https://localhost:9200/index_name?pretty

And the output will include an index(see settings in output) and its mappings too and it will look like below output -

{
  "index_name": {
    "aliases": {},
    "mappings": {
      "collection_name": {
        "properties": {
          "test_field": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          }
       }
    },
    "settings": {
      "index": {
        "creation_date": "1527377274366",
        "number_of_shards": "5",
        "number_of_replicas": "1",
        "uuid": "6QfKqbbVQ0Gbsqkq7WZJ2g",
        "version": {
          "created": "6020299"
        },
        "provided_name": "index_name"
      }
    }
  }
}

View ALL the data under this index

curl -H 'Content-Type: application/json' -X GET https://localhost:9200/index_name/_search?pretty

User · Answer

If you didn t index too much data into the index yet  you can use term facet query on the field that you would like to debug to see the tokens and their frequencies   curl -XDELETE  http   localhost 9200 test-idx  echo curl -XPUT  http   localhost 9200 test-idx  -d          settings              index number of shards    1           index number of replicas   0             mappings                          doc                  properties                      message     type    string    analyzer    snowball                                     echo curl -XPUT  http   localhost 9200 test-idx doc 1  -d        message    How is this going to be indexed       echo curl -XPOST  http   localhost 9200 test-idx  refresh  echo curl -XGET  http   localhost 9200 test-idx doc  search pretty true amp search type count  -d         query              match                   id    1                        facets              tokens                  terms                      field    message                                    echo

User · Answer

I can recommend Elasticvue  which is modern  free and open source  It allows accessing your ES instance via browser add-ons quite easily  supports Firefox  Chrome  Edge   But there are also further ways  Just make sure you set cors values in elasticsearch yml appropiate

User · Answer

You can even add the size of the terms  indexed terms    Have a look at Elastic Search  how to see the indexed data

[elasticsearch] How can I view the contents of an ElasticSearch index?

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