18UPGRADING FREEBSD
Upgrading servers is perhaps the most annoying task in the system administrator’s routine. I can manage unexplained behavior on my desktop after an upgrade, but when my whole organization or hundreds of customers depend on one server, even thinking of touching that system makes my bowels churn. Any operating system upgrade can expand your burgeoning gray hair collection. Even very experienced sysadmins, faced with a choice between upgrading a critical system in-place and jabbing red-hot needles into their own eyes, frequently have to sit down and consider their choices. Virtualized and orchestrated cloud systems might seem ...
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