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Unattended Linux Wakeup, Backup, Shutdown (part 5)

Mar 02, 2011, 18:04 (0 Talkback[s])
(Other stories by Carla Schroder)

"At last we come to the end of this series and put all the pieces together, and put our fabulous unattended automatic backup scheme to work. You need never lift a finger except to run periodic checks to make sure everything is working correctly.

"Here's how it all fits together:

1. Since I have a router that runs 24x7, that runs a cron job that wakes up the backup server. The wakeup command can be run from any computer on the same subnet as the server.
2. Each client PC has its own backup script, also started by cron.
3. Server and clients all have their own cron jobs to shut them off.

"This is all very simple by ace scripter standards. Shutdowns are timed, rather than some elegant thingy that knows when the backup is finished and then shuts down. I give my backups an hour to run, which is about 55 minutes more than they need. With Gigabit Ethernet and SATA 3.0 even giant batches of photos or videos move pretty quickly. If you're not familiar with rsync, it is my backup tool of choice because it is extremely efficient. After your first backup it transfers only changes, and can copy files from your backup server without any special tools, just your usual favorite Linux copy commands."

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