CARP your way to high availability
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You're putting out system management fires, with five SSH sessions open on your desktop. The mail server needs a restart after that kernel patch, so you su to root and type reboot. Just as the connection closes, your brain catches up with your fingertips. The mail server's still up -- the system you rebooted was the firewall at the site 200 miles away. The firewall on which 50 users rely. The firewall that refuses to reboot without a cold reset. What do you do?
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