[SOLVED] mesh network advice wanted

RobFantini

Renowned Member
May 24, 2012
1,708
42
68
Boston,Mass
Hello
we have a 7 node ceph cluster which is running fine.

the ceph network uses two 10G switches and Mellanox ConnectX-4 cards. we use bond_mode active-backup.

each node has pci slots to add three more dual port connectx cards.

So I am considering mesh network to eliminate the switches, and gain more speed.
However it seems that a 7 node mesh network will have a complicated /etc/network/interfaces configuration and a lot of wires to keep straightened out.

My question : In our case will a mesh network make things a lot more reliable then using switches?
 

aaron

Proxmox Staff Member
Staff member
Jun 3, 2019
656
55
28
A Mesh for 7 nodes? 6 cables from each node to connect to all the others? I wouldn't do that. This seems to be much too complicated to be handled efficiently and likely to be misconfigured at some point by accident.

If you want better latency I would switch over to a 25G network.
 

RobFantini

Renowned Member
May 24, 2012
1,708
42
68
Boston,Mass
A Mesh for 7 nodes? 6 cables from each node to connect to all the others? I wouldn't do that. This seems to be much too complicated to be handled efficiently and likely to be misconfigured at some point by accident.

If you want better latency I would switch over to a 25G network.
that was what I thought.

for us 10G is more then enough bandwidth based on zabbix latency graphs. so we'll keep our set up as is..

Thank you.
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE and Proxmox Mail Gateway. We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get your own in 60 seconds.

Buy now!