[PAR] An hypervisor is unreachable

An hypervisor on the Paris zone is currently unreachable. We are looking into it.

EDIT 17:38 UTC: Hypervisor has been rebooted. Services are being restarted.

EDIT 18:08 UTC: Services have all been restarted. We continue looking into why the hypervisor went down and continue to monitor the situation.

EDIT 18:27 UTC: Initial investigation shows that a KVM kernel bug was encountered, leading to a kernel crash. We will investigate further to see if this can be mitigated by an update. The incident is now over.