Kibana upgrade from 7 to 8.12 errors with security_exception on saved objects migration

Elastic Stack Kibana
1

I checked Upgrade Assistant prior to performing the upgrade.
I was also on the latest version of 7.17 before upgrading.

I'm attempting to upgrade to version 8.12 on my locally running development environment.
Thus, I manage the users, roles and users_roles in files that I mount inside the elastic stack containers.

Upon startup of kibana, I see a ton of these errors:

2024-01-23 15:14:54 [2024-01-23T21:14:54.299+00:00][ERROR][savedobjects-service] [.kibana_ingest] Action failed with 'security_exception
2024-01-23 15:14:54 Root causes:
2024-01-23 15:14:54 security_exception: action [indices:admin/create] is unauthorized for user [admin] with effective roles [kibana_admin,superuser] on restricted indices [.kibana_ingest_8.12.0_reindex_temp], this action is granted by the index privileges [create_index,manage,all]'. Retrying attempt 15 in 64 seconds.

They are logged for many .kibana indices.

i've tried adding the missing privileges to the kibana_admin role that I created but it obviously is not correct.

Is anyone able to help point me in the right direction?

3

I'm managing my users, roles, permissions using files I mount in the elasticsearch docker container as this is for local development.

I discovered a reserved/built-in role named kibana_system that apparently has the correct permissions needed to solve the errors above.

I added a user with that role and used that user for the kibana docker container and it started up with no errors.