Elastic Cloud version 7.17.6.
After I deleted these indices, I could not access to Kibana or Elasticsearch in Elastic Cloud.
If I access Kibana, the page would be like this and it is the same situation even if I restart the deployment.
What should I do to fix this?
You might need to create a Support issue for this one.
Thanks for the early reply. I'll do that.
I am really curious why did you delete those:
What was the reason to do that?
Elasticsearch deprecation logs said it is deprecated to direct access to system indices in the future version, and I misunderstood I should delete those indices before upgrading the deployment to v8.
I had been investigating the message of "Your changes cannot be applied" on upgrade popup of Elastic Cloud.
That doesn't mean you should delete them!