autotune_memory_target_ratio missing in ceph

[mgiammarco]

Hi,
I have a three servers cluster proxmox 7.4-17 licensed.
In each server there are 38 gb of virtual machines but 120gb of memory is used.
I assume it is ceph that uses all that space.
I want do limit ceph memory usage, official documentation says that I need to do this command:
ceph config set mgr mgr/cephadm/autotune_memory_target_ratio 0.2
but this variable is missing.
It seems ceph in proxmox is a modified version.
How can I limit memory usage?
Thanks,
Mario

 

[cheiss]

Hi,

Proxmox VE does not use cephadm to deploy Ceph, thus any cephadm-related notes from the documentation do not apply here.

See also e.g. this thread, as this seems to have quite a few comments w.r.t to that topic: https://forum.proxmox.com/threads/ceph-17-2-quincy-available-as-stable-release.111887/post-508248

Edit: You can still set osd_memory_target as needed, of course - that setting is not cephadm-specific.