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Hello AWS Customer,
If you experience a preupgrade check failure during version upgrade, review the PrePatchCompatibility log file that Amazon RDS generates.
You can view the PrePatchCompatibility log file under Logs & events in the Amazon RDS console. Then, review the details of the listed incompatibility issue and correct the issue. In most cases, the log entry includes a link to the Amazon RDS for MySQL documentation on how to correct the incompatibility.
Please go through the below references for more details.
- [+] https://repost.aws/knowledge-center/rds-mysql-preupgrade-failure
- [+] https://dev.mysql.com/blog-archive/upgrading-to-mysql-8-0-here-is-what-you-need-to-know/
If you still not able to upgrade after reviewing and making the required changes as per the PrePatchCompatibility log file, please do reach out to AWS Support via a support case and we will assist you further.
I hope the above information was helpful to you.
Have a great day ahead !!
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