I've updated our dev cluster to 6.6 in Elastic Cloud and follow documentation to try and create an Index Life Cycle Policy. https://www.elastic.co/guide/en/elasticsearch/reference/current/ilm-put-lifecycle.html
Message I get back is:
{
"error": {
"root_cause": [
{
"type": "invalid_index_name_exception",
"reason": "Invalid index name [_ilm], must not start with '_', '-', or '+'",
"index_uuid": "_na_",
"index": "_ilm"
}
],
"type": "invalid_index_name_exception",
"reason": "Invalid index name [_ilm], must not start with '_', '-', or '+'",
"index_uuid": "_na_",
"index": "_ilm"
},
"status": 400
}
Any ideas?