RDS Upgrade Fails! from mysql 5.7 to mysql 8.0

Question

Hello,

We are trying to upgrade our RDS Mysql version as part of AWS request.

I Launched a new RDS from A snapshot and try to upgrade the Mysql version.

**This is what I got in the error log:
**
Database instance is in a state that cannot be upgraded: PreUpgrade checks failed: RDS detected Incompatibilities upgrading to MySQL 8.0.35. More details can be found in the PrePatchCompatibility.log file, accessible in the 'logs' section below.

Answer

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 !!

Answer

You may want to read this: https://repost.aws/knowledge-center/rds-mysql-preupgrade-failure

RDS Upgrade Fails! from mysql 5.7 to mysql 8.0

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