如何更改 Google Cloud SQL（第二代）实例的数据库版本？

Question

I have a large Google Cloud SQL (Second Gen) instance, and I would like to upgrade my database version from MySQL 5.6 to 5.7. But database version option is disabled on the edit instance form.

Why it is disabled, do i have to create a new instance then export and import existing database? My database is too large, and it will be a long downtime.

Answer 1

Minor version upgrades to MySQL through Google Cloud now appears to be supported, though only through API calls: https://cloud.google.com/sql/docs/mysql/upgrade-minor-db-version#gcloud

The pertinent section if using the gcloud CLI:

gcloud sql instances patch $INSTANCE_NAME --database-version=$DATABASE_VERSION

Substitute your instance name for the $INSTANCE_NAME variable, and your target database version in place of $DATABASE_VERSION .

There appear to be two REST APIs also available - see the documentation for details.

Answer 2

Per the Cloud SQL Migration docs , the only way to migrate versions is to export your data, and re-import into a new instance. The documentation mentions going from 5.5 to 5.6, but I would believe that going 5.6 to 5.7 would follow the same procedure.