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[Discuss] Cloud-backup solutions for Linux?
- Subject: [Discuss] Cloud-backup solutions for Linux?
- From: richb at pioneer.ci.net (Rich Braun)
- Date: Fri, 25 Sep 2015 09:44:38 -0700
Daniel Barrett detailed his solution: > I use a hybrid, multi-level process and haven't seen anything > similar mentioned ... (We could improve by using an > rsync+symlinks incremental approach.) I have a couple of suggested improvements, since your solution's quite similar to mine. The rsync/symlinks approach is baked into rsnapshot, which you can set up to run hourly: it's easy to figure out and has a simple config file. One other tweak I have done is set up unison to run every 5 minutes between pseudo-RAID1 mirrored volumes across two main servers. I've tried various other approaches trying to create a real clustered disk filesystem, but settled on the tried-and-true unison. (My last experiment, which I ran for about 18 months, was GlusterFS--it was way too much overhead, and had way too many undetected / disastrous split-brain situations that went on for days or weeks. After iterating on monitoring improvements several times, I declared life-is-too-short-for-this.) > all computers rsync onto a single USB3 drive, which rotates into > a safety deposit box. Alas nobody's come up with a properly automated way of doing physical vault storage for the home yet (Iron Mountain has been doing this for offices forever, in a way that's pretty seamless if your office has staffing to handle daily UPS/Fedex deliveries--but it's expensive and not functional for home). I make do with a backpack of hard drives carried whenever I happen to remember to swap them between locations. Someday 15TB will fit in a thumb drive and I'll do it more often. > If Boston is nuked, the Linode files will survive, but the GPG keys > won't. I keep three copies of those (in my case, 2048-byte keys used for LUKS encryption): I encrypt both the live filesystems and the backups, using a separate key for each volume. Those copies are on USB thumb drives, one of which is in a safety-deposit box and the others kept offline in locations separate from the backup media (one of them carried with me on my keychain, at least once I replace the one which just broke recently). A not-yet-solved issue is that when I add a new volume, it's a pain to update all 3 thumb drives so the one on my keychain tends to be the most current. The other recommendations I make are to (a) write up detailed instructions on how to restore from your backup, encrypt that file and make a printout to put into your safe-deposit box, (b) go through the restore procedure with a trusted technical friend, and (c) make sure your loved-ones who have entrusted you with their data know about the safe-deposit box and the trusted-tech just in case you get hit by a bus (or nuked). -rich