After almost 24 hours of uptime we are calling this issue tentatively resolved, but will continue to monitor this in the coming days.

This system continues to vex us. We are unable to determine the root cause as all we see is a kernel crash. Temperatures and voltages are fine, we see no ECC ram errors or CPU exceptions, so this certainly looks like software dependent. We have already earlier in the day fully upgraded the system and hypervisor on the machine, which did not help. To us, it really looks like some customer workload on the machine is causing the kernel to panic and at an increasing rate today. We will now disable a couple of more customer instances which are high activity in an effort to locate the culprit.

We now hope we have correctly identified the root cause of the instability issues / kernel crashes we have seen today. We will continue to watch the system closely and we sincerely hope we will see not further issues here.

Unfortunately the system is again showing stability issues. We think we now have narrowed this issue down to a misbehaving virtual machine which is somehow crashing the kernel. We will boot the system again now and disable that VPS. Hopefully that will fix this issue.

This incident has been resolved for now. We are trying some things and are watching this system closely. It's looking like some user is running a workload which from time to time hits a kernel fault and the system freezes up. If this keeps happening, we will suspend/stop this users server in order to bring stability back to the system.

Seems like this system is having problems again. We will bring it up asap and investigate further.

This incident has been resolved, all VPS servers are up and we hope this instability issue is past us now.

After having inspected all hardware, we now believe this is a kernel/software issue and will be running a full upgrade of the system, after which we will perform another reboot. You can expect your server to be up in 5-10 minutes from now.