Randomly, out of nowhere, we stopped being able to connect to the Google Cloud SQL database at almost precisely 8:30 am ET this morning.
We then tried to restart the instance and have been stuck for more than an hour with a similar situation to this question. It seems that this sort of freak accident has happened before on Google Cloud SQL.
The problem is that the instance is completely unresponsive to any commands - either via the GUI or the command line.
To make matters worse, there's no way to call support unless you pay hundreds of dollars per month to join a plan. I'm hoping that someone from Google might be trolling the SO threads with these tags, or someone who has dealt with this before can offer some advice.