this post was submitted on 22 Feb 2024
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How to remotely reboot a Linux host if SSH fails to connect? (self.selfhosted)
submitted 9 months ago* (last edited 9 months ago) by sylverstream to c/selfhosted@lemmy.world
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Edit2: Thanks all for your responses! I have checked the logs, https://lemmy.nz/comment/6192604, and based on that removed tracker-miner-fs as it's a search/index tool which I don't need. No idea why it took over all memory. I'll also get a WiFi Smartplug as a kill switch. Hopefully that solves it. Thanks again heaps!

I've got a HP ProDesk G3 which I'm using as home server, I've installed Ubuntu on it. Earlier this week the services I host on it stopped (Immich & Frigate). I tried to SSH, but it just hung after asking for a password. I could ping it, but it was just unresponsive.

I had to force reboot it manually. This is fine, but I'm not always at home.

The chip has Intel vPro as far as I know, which could be an option, but I have no idea how this works. The documentation on the Intel site seems focused on enterprises. I tried to connect with RealVNC which does not work, so I think I've got to install/configure something on the server first.

I also asked Bing Chat but it came up with non existing packages & commands. Welcome your thoughts!

/edit: I just found this, which seems to be exactly what I need: https://manpages.ubuntu.com/manpages/focal/en/man7/amt-howto.7.html

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[–] ryannathans@aussie.zone 6 points 9 months ago (5 children)

Tracker miner fs generates thumbnails for files iirc. There was a recent vulnerability where malicious files could crash it and execute code just by being on disk. Make sure you haven't been hit by malware

[–] sylverstream 1 points 9 months ago (2 children)

Yeah tracker miner sounds dodgy. I've only installed Immich & Frigate on the box, and no dodgy repositories. It's also auto updating. Will do research how to check for malware, thought that was a Windows only thing :D

[–] constantokra@lemmy.one 1 points 9 months ago (1 children)

I've previously had a problem with my server becoming unresponsive when running immich. It's been a while, but I remember there being some kind of memory leak having to do with immich. It was in their GitHub issues and everything. On my system it would take about a day and a half and then ssh, along with everything else, would become unresponsive. Rebooting would fix it for a day and a half. I stopped running immich and it hasn't happened since. I suppose you could try using a cron job to restart immich periodically and see if that resolves your problem.

[–] sylverstream 2 points 9 months ago

That is good to know! Will keep an eye on memory usage of immich. I really like it, so I'm reluctant to let it go.

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