[Linux-cluster] Multiple TCP/IP adresses for cman communication
alain.richard at equation.fr
Mon Sep 17 08:06:03 UTC 2007
I am currently using a pretty common setup, using a two or more nodes
cluster, one or more iSCSI SANs, at least 3 gigabyte interfaces on
each nodes (one for cluter member cman communication, and 2 for iSCSI
node 1 node 2
| | | |
| Switch 2 |
| | |
| SAN |
| | |
On each switches, I use a separate network :
10.10.10.0/24 for switch 1, cman communication and for communicating
with the rest of the world,
10.10.20.0/24 for switch 2 and first port of the SAN and nodes,
10.10.30.0/24 for switch 3 and second port of the SAN and nodes.
My SAN luns are multipathed on the nodes.
This setup works very well for me and I achieve both redundancy and
load balancing for access from nodes to SAN.
I am using Centos 5 (RHEL 5) on the nodes and cman use the default
configuration of using multicast on the switch 1 network.
I wonder if it is possible to make cman use the two other interfaces
as well for its communications between cluster nodes ?
Doing so, I will be able to support the fail of any of the 3 switches
without having the cluster members fenced in any way.
Alain RICHARD <mailto:alain.richard at equation.fr>
EQUATION SA <http://www.equation.fr/>
Tel : +33 477 79 48 00 Fax : +33 477 79 48 01
Applications client/serveur, ingénierie réseau et Linux
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