google-cloud-sql - max_allowed_packet

To change your max_allowed_packet on Google Cloud SQL, go to the overview of your instance on the cloud console, click on edit and look for the MySQL Flags section at the bottom of the page. max_allowed_packet is one of the flags you can set there. Set the value you want, and save/confirm.

You can now set it yourself by editing the instance in Developer Console.

All the settable flags are documented here: https://cloud.google.com/sql/docs/mysql-flags