elasticsearchHow can I check if an index exists in Elasticsearch?

You can check if an index exists in Elasticsearch using the _cat/indices API. For example, the following command will check if the index myindex exists:

curl -XGET 'localhost:9200/_cat/indices?v&s=index'

The output will be similar to this:

health status index               uuid                   pri rep docs.count docs.deleted store.size pri.store.size
yellow open   myindex            d3E3Ks7qQ0yYhgT0LsV7VQ   5   1          0            0      3.3kb          3.3kb

The parts of the command are:

• curl: the command-line tool to make HTTP requests
• -XGET: the HTTP method to use for the request
• localhost:9200: the URL of the Elasticsearch instance
• _cat/indices?v&s=index: the API endpoint to check indices

If the index exists, it will appear in the output.

Helpful links

• Elasticsearch _cat API
• cURL Documentation

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