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[Linux-cluster] Use alternate network interfaces for heartbeat in RHCS



Hi,
 
I'm trying to send cluster communications thru dedicated LAN interfaces (out of band network) separate from the production interfaces but it doesn't seem to be functional.
 
I have a 2 nodes cluster (RHEL 5.3) with 2 bonding interfaces each, one bonding for production on a given Vlan and the other on a dedicated and isolated LAN (out of band LAN).
 
According to some cman doc (that may be outdated), the way to do so is to declare explicitely at each clusternode level  the multicast addr of the cluster and the interface on which the coms are sent.
 
 <clusternode name="node1.mydomain" nodeid="1" votes="1">
                        <multicast addr="239.128.2.1" interface="bond1"/>
</clusternode>
<clusternode name="node2.mydomain" nodeid="2" votes="1">
                        <multicast addr="239.128.2.1" interface="bond1"/>
</clusternode>
 
and the cman multicast addr:
 
<cman expected_votes="3" two_node="0">
                <multicast addr="239.128.2.1"/>
        </cman>
(I have a qdiskd).
 
After restarting the cluster, traffic is still sent through bond0 which is the production interface.(tcpdump -i bond0 host 239.128.2.1)
 
Any idea ?
 
Brem
 

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