This instance of Jira was flagged by Nessus as needing to be updated to remediate a potential vulnerability. I went through the upgrade preliminary steps (backups, etc.) then downloaded the 8.19.0 bin file and ran it. After the update, when I run "service jira start", it seems to start, but when I try to log into Jira itself, it complains about "error in MySQL supported version".
I've tried changing the "default_storage_engine" to mysql57 with no success. I reverted it back to InnoDB, still with no success. I don't know what else to do.
The database (MySQL 5.7.31) is on an AWS RDS instance. The Jira host is running on Ubuntu 16.04.7 LTS
It's not feasible to roll back to 8.15.0, as Jira complains about a data version mismatch.