mon low on available space

[gdi2k]

I've got quite a fresh install of Proxmox with Ceph and things are working well. However, on the ceph Health page it reports "mon sb2 is low on available space". But when I check the OSDs, no disk is more than 6% used. Any idea what's going on?



Note that I have Ceph set up with two crush rules - one for NVMe drives and one for HDD drives. I set it up like this:
https://forum.proxmox.com/threads/recommended-method-for-secondary-ceph-pool.35821/#post-215552

 

[dcsapak]

the monitors are not on an osd, but simply on the host you installed on

 

[gdi2k]

Ah, understand! Thanks, the root file system was nearly full on this node, that's what was causing this message. Cleared some space, now the message has gone.