Comment Re:Well congratulations (Score 1) 125
I believe they designed servers and integrated some smart software to be able to do that with great performance.
But you can duct-tape this kind of recovery on commodity servers if they boot via PXE/TFTP on a rudementary but very effective level though, in tandem with one configuration channel each that you could have fallback for quite simply.
I imagine rollout scripts would first check if rollout to a test-subset is succesfull before continueing with all production servers. I speculate this article might just be about this subset, but story being spiced/beefed up in spite of more exceting/serious errors at server heaven.