One of the Flow App Engine (Jelastic) Hypervisor Nodes has been rebooted because of a HW issue. Containers affected will be online within a few minutes.
Update: all affected Containers are back online now.
We are currently investigating into the issue with Jelastic Engineering. An update is planned.
Last update (17. May 2016):
The root-cause has been identified by Odin-Support (company behind Virtuozzo) and related workaround has been applied to all Hypervisors.