Hello Jason, Where did you replace "mysql" to "progres", exactly?
The tutorial you mention is meant for the standard environment. "Connection from an App Engine standard environment application to a PostgreSQL instance is not supported.", as explained in the "Connecting from App Engine" online document <https://cloud.google.com/sql/docs/postgres/connect-app-engine>. On the same page you can find more information on how to connect to your PostgreSQL database from the app engine. If you want to connect from external applications, "Connection Options for External Applications <https://cloud.google.com/sql/docs/postgres/external-connection-methods>" provides you with needed information. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/6482350d-a7b8-44af-8346-bc184b6af897%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.