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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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[–] Shadow@lemmy.ca 3 points 9 months ago (1 children)

If it hung like that, you probably have some sort of storage issue or high memory consumption pushing the box into swap.

Intel amt may help you, if you want hardware then google pikvm. Raritan also makes a small single node ip kvm, but it'll probably cost more.

[–] sylverstream 2 points 9 months ago

Thanks! Yeah it seemed to be an OOM issue, but based on my Kagi qualities it seems like an OS issue. But, it also has an error about the GPU. Normal memory usage is more than fine, so perhaps it was a one time thing. See logs: https://lemmy.nz/comment/6192604