SSH Gateway is unavailable because of maintenance

The SSH Gateway will undergo a maintenance which will stop the service. Expected downtime is 30 minutes. During this time, SSH access to instances will be unavailable both from the CLI or from the regular SSH tool. Existing SSH connections will be stopped.

Maintenance is expected to start in a few minutes

EDIT 17:56 UTC: Service is back online, you should now be able to SSH to your instances. Sorry for the inconvenience.