Proxmox OOM-Killer problem

[TDex96]

Hi guys!



Last week i installed some Proxmox on my bare-metal servers. The servers have 16 CPU thread, 32 GB of RAM and 2x 250GB SSD. I use ZFS RAID1!

On every Proxmox host i have 1 VM with 16 CPU, 80 GB SSD and 16GB of RAM. My problem is, when i have a higher IO operation(for example a docker pull and compose up -d), the OOM Killer kills the VM. I didn't have special settings, memory balloning is off. Have you any suggestion for tihs problem? Have any settings to restart the VM after OOM-Killer kills that?(it is just on emergency, if it kills on night) Or what can i do in this situation?

Thank you very much any suggestion!

 

[leesteken]

ZFS uses up to 50% when you do IO and Proxmox also needs some memory. The OOM kills the larges memory user, which will be your VM. The Proxmox manual describes how to limit ZFS memory usage.

 

[TDex96]

Okay, thank you very much, i will check now!