Ceph Cluster

[starnetwork]

Hi,
I have big Proxmox 5 cluster with multiple nodes
I want to assign few nodes for Shared storage with Ceph, it's possible or all nodes inside this cluster should enabled Ceph?

am asking since I did it and got this error: rados_conf_read_file failed - Invalid argument (500)
from nodes without Ceph

any Idea / explain for that?

Regards,

 

[aderumier]

you can install ceph on specifics nodes (3 nodes for monitors minimum, osds could be on 2 nodes only with size=2).

but you need to install ceph packages on others (only package (pveceph install), not creating deamons (pveceph create...), to install packages to manage ceph

 

[jeffwadsworth]

https://pve.proxmox.com/wiki/Ceph_Server

 

[udo]

...
rados_conf_read_file failed - Invalid argument (500)
from nodes without Ceph

any Idea / explain for that?

Hi,
link is missing (which is done by "pveceph init").

ln -s /etc/pve/ceph.conf /etc/ceph/

But do also an "pveceph install --version jewel" (or which version do you have installed) to have actual ceph-packages.

Udo

 

[starnetwork]

* need also to add the "Ceph Network" interface to the additional servers...

work, thanks!