errors

rollover target does not point to a write index

Set one of the indices behind an alias to be the write index.

POST _aliases
{
     "actions": {
             "index": "index_name-000001",
             "alias": "index_alias",
             "is_write_index": true
     }
}

restore from snapshot

https://elastic.co/guide/en/elasticsearch/reference/current/restore-from-snapshot.html