Hello Adrien, More information is needed, mostly about your CloudSQL setup. Can you authenticate and log in properly to CloudSQL? Does your app access the database instance? The likeliest cause for the 502 Bad Gateway error is generally a lack of response from the back-end, in this case your CloudSQL instance.
A copy of significant entries from your logs in the developers' console could prove of great help. Any other piece of information you deem relevant is to be joined to your reply as well. -- 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 [email protected]. To post to this group, send email to [email protected]. 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/f8cc9a15-8592-4b92-bf5c-9075ac138528%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
