I have a filebeat from one ubuntu 20.04 and netflow going to my stack directly into elasticsearch. The stack is one server and it's running native (not in docker or anything) running 7.8. Whenever I try to open the SIEM app I get the following error.
[illegal_argument_exception] Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [event.dataset] in order to load field data by uninverting the inverted index. Note that this can use significant memory.
Any tips or tricks to get the SIEM app to work?