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sha256_password deprecated warnings filling logs
Posted by: Greg Turner
Date: May 14, 2020 05:21PM

I've configured an InnoDB MySQL v8.0.19 Group Replication Cluster in single-primary mode. I have several webapps accessing the cluster via their own MySQL Router instance in a 1:1 relationship, as per the suggested pattern.

Everything appears to be working fine, but the logs for my primary server are being filled with the following message:

[Warning] [MY-013360] [Server] Plugin sha256_password reported: ''sha256_password' is deprecated and will be removed in a future release. Please use caching_sha2_password instead'

Dumping the mysql.user table, I see that the generated mysql_router users are using the 'mysql_native_password' plugin, and all other users are using the correct 'caching_sha2_password' plugin.

These mysql routers are the only clients accessing the server, so I suspect it's complaining about how it's accessing the cluster.

Anyone know how to fix this warning?

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