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Post-upgrade cleanup for Aurora MySQL version 8.4 - Amazon Aurora

Post-upgrade cleanup for Aurora MySQL version 8.4

After you finish upgrading your Aurora MySQL version 3 cluster to version 8.4, perform the following cleanup actions:

  • Migrate users to caching_sha2_password. The default authentication_policy is *:caching_sha2_password in Aurora MySQL version 8.4. We recommend migrating any remaining users from mysql_native_password to caching_sha2_password before the upgrade is complete.

  • Update monitoring and automation. Update any CloudWatch alarms, setup scripts, and automation that use removed replication status variables (such as Com_show_slave_status or Com_slave_start). Use the replacement status variables instead.

  • Update CloudFormation templates. Update any CloudFormation templates to remove references to removed parameters and use the replacement parameters.