I'm trying to connect my server code running as a Docker container in our Kubernetes cluster (hosted on Google Container Engine) to a Google Cloud SQL managed MySQL 5.7 instance. The issue I'm running into is that every connection is being rejected by the database server with Access denied for user 'USER'@'IP' (using password: YES). The database credentials (username, password, database name, and SSL certificates) are all correct and work when connecting via other MySQL clients or the same application running as a container on a local instance.
I've verified that all credentials are the same on the local and the server-hosted versions of the app and that the user I'm connecting with has the wildcard % host specified. Not really sure what to check next here, to be honest...
Additional information: the server application is built in Node using the mysql2 library to connect to the database. There are no special firewall rules in place that are causing network issues, and that's confirmed by the fact that the library IS connecting, but failing to authenticate.
via moberemk
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