I am receiving the "[INFO ][o.e.x.s.a.AuthenticationService] Authentication of [elastic] was terminated by realm [reserved] - failed to authenticate user [elastic]" error in the Elasticsearch log files. Authentication is set for certs and native realm, so it seems relatively benign for operating. I understand this error is thrown when the credentials for the elastic superuser in the reserved realm are incorrect or misconfigured. I also understand that this user sets the credentials for the other built-in users.
I believe this issue started after a rollback to an old snapshot after a failed upgrade. I found some information about reseting the bootstrap password and then setting it to the desired password again.
I want to see if its worth addressing since I am prepping to move to RHEL 8 from RHEL 7 in the near future and don't want to make further adjustments to this server if I don't have to. Will the bootstrap password fix or another fix easily address the issue if this error is not benign for operations? Or is it benign for the short term if I don't intend to make further upgrades or changes until I move to the new OS?