I recently upgrade to 7.8.1 standard version of ES and Kibana with 1.23.0.
Even when I am logged in as admin and try to create a new index pattern, I am not able to see any of the indices.
Similarly, when I try to see any of existing visulatization and dashboards, none of them are showing data.
I looked at the audit logs. All these queries are using index pattern with async_search behind the scene (something like abc*/_async_search). For all these, ROR is logging Index not found error.
In Dev tools, I also tried querying abc*/_search and got 0 match. But if I specify exact index name abcde_202009/_search, its returning the data. Similar behaviour is seen, with using _async_search from Dev tools. Using exact index name works, but using index pattern does not.
So I think that support for wild card pattern is broken in ROR for 7.8.x. Request you to kindly look into this on priority as this is now holding up the entire stack upgrade.