Selfhosted

40183 readers

508 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago

MODERATORS

[email protected]

How to remotely reboot a Linux host if SSH fails to connect? (lemmy.nz)

submitted 8 months ago* (last edited 8 months ago) by [email protected] to c/[email protected]

49 comments fedilink hide all child comments

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

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 5 points 8 months ago (1 children)

Yes, thanks for that. Good point. I checked the logs, and minutes before it crashed I can see below in the logs. Seems like either a GPU error or out of memory error. No idea what tracker-miner-f is by the way. It also shows a massive list of processes with their memory usage.

This goes beyond my knowledge :(

Feb 21 17:27:49 hppd600-g3 kernel: i915 0000:00:02.0: [drm] GPU HANG: ecode 9:0:00000000
Feb 21 17:32:43 hppd600-g3 kernel: 1305621 total pagecache pages
Feb 21 17:32:43 hppd600-g3 kernel: 16258 pages in swap cache
Feb 21 17:32:43 hppd600-g3 kernel: Free swap  = 0kB
Feb 21 17:32:43 hppd600-g3 kernel: Total swap = 1000444kB
Feb 21 17:32:43 hppd600-g3 kernel: 2065206 pages RAM
Feb 21 17:32:43 hppd600-g3 kernel: 0 pages HighMem/MovableOnly
Feb 21 17:32:43 hppd600-g3 kernel: 64196 pages reserved
Feb 21 17:32:43 hppd600-g3 kernel: 0 pages hwpoisoned

Feb 21 17:32:43 hppd600-g3 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=user.slice,mems_allowed=0,global_oom,task_memcg=/user.slice/user-113.slice/[email protected]/background.slice/tracker-miner-fs-3.service,task=t>
Feb 21 17:32:43 hppd600-g3 kernel: Out of memory: Killed process 833 (tracker-miner-f) total-vm:625676kB, anon-rss:3144kB, file-rss:4816kB, shmem-rss:4kB, UID:113 pgtables:280kB oom_score_adj:200
Feb 21 17:32:43 hppd600-g3 kernel: i915 0000:00:02.0: [drm] Resetting rcs0 for stopped heartbeat on rcs0

[–] [email protected] 6 points 8 months ago (2 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

[–] [email protected] 4 points 8 months ago (1 children)

I've uninstalled it, it's an index/search tool. Don't need it :D

[–] [email protected] 3 points 8 months ago

Usually comes with your DE, sometimes removing it breaks your DE

[–] [email protected] 1 points 8 months ago (1 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

[–] [email protected] 1 points 8 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.

[–] [email protected] 2 points 8 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.