Ceph network vs node network

[pkcz]

Hi,

I like to install ceph on 3 proxmox nodes with 2 network cards each (NIC1, NIC2). After reading wiki and some howtos, i didnt understud one detail.

Proxmox nodes uses device NIC1 with network address 192.168.0.0/24

Can I set two cephs networks as "public_network=192.168.0.0/24" on NIC1 and "cluster_network=10.10.10.0/24" on NIC2?

Or is it better to set both ceph "public_network=10.10.10.0/24" and ceph "cluster_network=10.10.10.0/24" on same device NIC2?

Thank you very much for reply
Petr

 

[mira]

If you don't have enough NICs to completely separate the Ceph network, it might be better to keep both the public_network as well as the cluster_network on the same one.

As this is a 3 node cluster, make sure that Corosync has a link with low latency available. If possible not shared with any other traffic (Ceph, VM, etc.).