Proxmox and memory

From DWIKI

Docs

Clues

pvesh

pvesh get /cluster/resources

Get current configuration of VM 105

pvesh get /nodes/nuc/qemu/105/status/current

Now to get maxmem given to VM 105

pvesh get /nodes/nuc/qemu/105/status/current --output-format json | jq '.maxmem'

Get memory usage

pvesh get /cluster/resources --output-format json |jq '.[] | select(.id=="qemu/105") | .mem'      


FAQ

virtio_balloon virtio0: Out of puff! Can't get 1 pages

Out of memory: Kill process 10429 (java) score 126 or sacrifice child

When pve hosts runs low on memory (80% used) it starts reclaiming memory from guests using ballooning. See QM Memory. Make sure to set 'Minimum memory' to a value high enough to prevent processes getting shot by OOM killer.

a used vhost backend has no free memory slots left

https://forum.proxmox.com/threads/hotplug-memory-limits-total-memory-to-44gb.30991/#post-154914

echo "options vhost max_mem_regions=509" >> /etc/modprobe.d/vhost.conf