[Linux-cluster] Using heartbeat and network access over the same bonded interface

[Celso K. Webber]

Hello all,

I'm on a new project where we are deploying a GFS Cluster using two 
brand new Dell PE-2900 servers. One good thing about the 9th generation 
of Dell servers is that the IPMI device "listens" on both onboard NIC 
connectors of the machine. On previous generation machines, you can only 
access the IPMI LAN interface through NIC #1.

This is good since we plan to have a redundant channel to fence a 
machine through IPMI.

The project requires a setup like this:
* normal network access on a 10.x.x.x IP range;
* cluster heartbeating on a 192.168.x.x IP range.

The original project was done this way so that network access goes 
through NIC #1, and heartbeating goes through NIC #2.

What we want to do is:
* create a bond0 device for the 10.x.x.x IP address;
* create a bond0:0 device for the 192.168.x.x IP address;
* use IPMI as a fence device on the 10.x.x.x IP range.

Question: can we share the same bonded device for both normal network 
access and heartbeating, even if I'm using differente IP ranges? Does 
anything in the Cluster Software will be affected because of the normal 
network traffic over the same NICs?

This way we believe we can take advantage of the redundant IPMI 
interface, becase the bond0 device will guarantee we have an IP route to 
the 10.x.x.x network for accessing the IPMI device.

Sorry if the explanation is confusing, please advice.

Regards,

Celso.
-- 
*Celso Kopp Webber*

celso at webbertek.com.br <mailto:celso at webbertek.com.br>

*Webbertek - Opensource Knowledge*


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