Ubuntu Server VM crashing entire node

smittychifi

Member
Dec 8, 2021
5
0
6
45
We've had a small ubuntu 20 server VM running on one of our nodes without issue for the past 1.5 years, and very recently has been crashing the entire node after just a few minutes of booting up.

VM config:

Code:
boot: order=scsi0;ide2;net0
cores: 2
cpulimit: 1
ide2: local:iso/ubuntu-20.04.5-live-server-amd64.iso,media=cdrom,size=1373568K
memory: 4096
name: ma1
net0: virtio=C6:95:A1:6C:A4:7F,bridge=vmbr0,firewall=1
numa: 0
ostype: l26
scsi0: local:110/vm-110-disk-0.qcow2,size=50G
scsihw: virtio-scsi-pci
smbios1: uuid=ff3f695b-304e-4620-ad19-3b3adcce26bb
sockets: 1
vmgenid: 81dc04e9-5a87-4d5d-ae33-1daf7534d381

The recent change that seems to coincide with this is that we upgraded the node from 7.4.x to 8.2.2. Since it is a VM I'm not sure how the upgrade would affect it though.

What I also noticed was that as the node became completely unresponsive, it was showing a load of 100+ on the CPU, despite CPU usage at < 30% in `htop`

I have tried restoring the VM backup file to a completely different node also running on 8.2.2 and it appears to run fine and not harm the node at all.

The only noteworthy difference between the nodes is that the original one is an AMD 3900x processor, and the second one is an Intel 8600K.

The AMD is in a production environment which is creating a lot of stress every time I try to boot the VM up.
 
Last edited:

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!