I plan on doing some kernel upgrades over the evening but probably not the physical hosts or the lesser used virtual machines. There is some instabilities in the existing kernel that is causing CPU lock-ups. Mostly these are transient and resolved by watchdog timers but one did hang our web server the other day.
I do not have access to parking at the co-location facility this weekend because they are re-stripping the parking lot so I’ll save updates of physical hosts for next weekend.
The reboots of the virtual machines only take a few seconds so interruptions will be brief. I’ve already done the web server so it will not be impacted, mainly shell and mail servers.
Also I plan to take some of the private virtual servers down for between 15-60 minutes depending upon their size to image them (a form of backup).