I have a loaded index in Kibana. I need to perform a regex search on one of the fields. The field is currently type 'text' and the regex search doesn't seem to work correctly on 'text' fields. I have tested my regex searches on 'keyword' fields and they work perfectly. Therefore I am looking to change the field from 'text' to 'keyword' so I can perform regex searches on this field.
Is this possible and if so, how can it be achieved?