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What do i look for in logs (lemmy.stonansh.org)
submitted 10 months ago by lemmy@lemmy.stonansh.org to c/linux@lemmy.ml

Hi everyone

My proxmox server is crashing daily. And I've been checking the logs. But the thing is. What do I look for? Syslog, kern and daemonlogs. I would like to fix this problem. Need advice ! Thanks

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[-] HurlingDurling@lemm.ee 51 points 10 months ago

When I look a the logs, I'm mostly looking for as least knots as possible, but also to make sure they are cedar, pine, or oak depending on the project.

Oh shit, this isn't the carpentry community. NVM then

[-] couscouscivil@sh.itjust.works 6 points 10 months ago

lol!

Thanks, you are the reason I look at comments.

[-] lauha@lemmy.one 2 points 10 months ago* (last edited 10 months ago)

When I am reading the logs, I usually check who was the last seaman in charge when the ship crashed through the pier.

[-] Atemu@lemmy.ml 38 points 10 months ago

The picture made me lol :D

[-] mvirts@lemmy.world 33 points 10 months ago

If you know the times of the crash, check whatever is logged right before and after

[-] couscouscivil@sh.itjust.works 10 points 10 months ago* (last edited 10 months ago)

grep -Ri 'error/|warning' /var/log/

Then you can further pipe 'grep' or 'grep -v' based on what you see or for a specific time.

[-] badbytes@lemmy.world 10 points 10 months ago

On Linux systems running systems I usually use the journalctl tool to look at messages. Ex.

journalctl --list-boots journalctl --since="2012-10-30 18:17:16"

Looking for anything obvious.

[-] lemmy@lemmy.stonansh.org 3 points 10 months ago

I'm -to be honest- quite the noob. What is obvious?

[-] oldfart@lemm.ee 3 points 10 months ago

Anything looking like this: http://i.stack.imgur.com/RMcUY.jpg

Anything saying "error" or "fatal" in the kernel log.

It's quite likely that you will not find anything because the machine reboots before it can write to disk. In that case, I'd start with memtest86.

Protip: view the logs in vim, it highlights errors in red.

[-] lemmy@lemmy.stonansh.org 1 points 10 months ago

Alright. That is what i see on my screen.

[-] Penguincoder@beehaw.org 7 points 10 months ago

You know what the various logs are, that's good to help out. So you have any crash dumps enabled? I think on Debian (what promox is based on), you have to install kdump tools and reboot. Then it should cause a the kernel to log a dump file you can read with crash if it's a kernel crash and not something else.

[-] lemmy@lemmy.stonansh.org 1 points 10 months ago

Ok will do this. It chrashed again. And I need this thing up and running and keep running.

[-] Interstellar_1@pawb.social 6 points 10 months ago

I do this all the time when I look at logs, I don't even really know why

[-] mvirts@lemmy.world 3 points 10 months ago

Pill bugs, moss, snakes, etc.

[-] robinj1995@feddit.nl 2 points 10 months ago

A good place to start because it's a likely culprit is anything mentioning "OOM" (which refers to Out Of Memory)

this post was submitted on 09 Sep 2023
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