what

Using the default index name of "all", the lambda is supposed to leave the .kibana index alone. While technically it performs as advertised, when using AWS Elasticsearch 6.5 with built-in Kibana, the index is named .kibana_1 and this lambda deletes it.

solution

When given an index name of "all", the lambda probably should skip all indexes with names starting with .kibana, not just the 1 index exactly named .kibana