Linux Backup Server: Remote Wakeup, Automatic Shutdown

"At last I can write this up for you, my fine readers. Today we're going to learn about using Wake-on-LAN to wake up a server remotely, and automatic shutdowns. My master plan for my backup server is to automate everything-- wake it up, run backups for all the computers in my house, and then everyone shuts down for the night. (You might want to review part 1 and part 2.)

"BIOS Support

"The first requirement is your system BIOS must support WOL, and usually it is disabled by default, so you must enter your BIOS to turn it on.

"NIC Support

Your Ethernet interface must support Wake-on-LAN (WOL). How do you find out? You need the ethool command:

# ethtool eth0 | grep -i wake-on
Supports Wake-on: pumbg
Wake-on: g

man ethtool explains all the switches. At a minimum you want to see this:

Supports Wake-on: g
Wake-on: g

Complete Story

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