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
