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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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LUKS decrypt at boot over SSH? (lemmy.world)

submitted 3 days ago by clif@lemmy.world to c/linux@lemmy.ml

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I've done a little research but curious about first hand experience.

I've got a little home server that is full disk encrypted with LUKS (+LVM, of course). It's headless (no display, no keyboard, etc) and just lives attached to the back of my desk, out of the way.

If it gets rebooted due to a power outage, I can plug in a keyboard, wait long enough for it to get to the LUKS password prompt, enter password, hit enter, and assume it worked if I see the disk activity light blinking. Worst case scenario, I can move it to a monitor and plug it in to get display too.

Because lazy, I'd prefer to be able to enter the decrypt password remotely. "Dropbear" seems to be a common suggestion but I haven't tried it yet.

So, asking for your experience or recommendations.

I'll start. Recommendation #1 - get a UPS : D ... But besides that.

Addendum: either way, I currently need to be home to do this because I access it remotely via tailscale along with my desktop. Since both are full disk encrypted, neither will boot to the point of starting tailscale without intervention. But, I might repurpose a nonencrypted RPi with SSHd to act as a "auto restarts with tailscale so I can SSH to it, then SSH to server to enter the LUKS password" jump point.

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[–] nucleative@lemmy.world 3 points 2 days ago

Interesting, I want to try some of these solutions.

I set up luks on some of my selfhosted virtualbox instances to protect against physical theft, but power issues cause all too frequent restarts that are a serious pain to physically access.

An ssh call in a script that could be remotely used to unlock and complete the boot would be so handy.