Power failure
Between 12:41 (the last entry in the operator log) and 13:10 (the estimated next hourly timestamp, the last has been 12:10) power failed for about one hour. I only found out at 18:30 when I restarted Diana – as usual, the disks restore far too late so boot failes. Reset isn’t enough to get the machine running, power has to be cylced, but the system came up without a problem; the only thing still to be automated is setting a logical to show the site frontpage :). That was done much later.
What goes on behind the doors of the (private) data center