How to set default mapping to “keyword” for dynamically added properties in Elasticsearch

[gitterhh]

In our application we add new documents which can have new unknown properties.

Is it possible to set default mapping to "keyword" for dynamically added new properties in Elasticsearch?

[Vinayak_Sapre]

@gitterhh
You can do this by defining dynamic template

{
  "mappings": {
    "dynamic_templates": [
      {
        "strings": {
          "match_mapping_type": "string",
          "mapping": {
            "type": "keyword"
          }
        }
      }
    ]
  }
}