[Linux-cluster] Multihome configuration in RHEL5
Patrick Caulfield
pcaulfie at redhat.com
Mon Oct 8 10:00:59 UTC 2007
Agnieszka Kukałowicz wrote:
> Hi,
>
> I have problem with multihome cluster configuration in RHEL5.
>
> I've read that it was possible to configure alternative cluster node
> name
> for servers who had configured two different nets. There are a few of
> examples how to do it on that mailinig list.
>
> Now, I have RHEL5 Beta with cman version 2.0.70 and it doesn't work.
> I've checked that "ccs_tool addnode node1 -n 1 -a node11" doesn't add
> the altname tag to cluster.conf file. And validating cluster.conf with
> "altname" tag inside says:
ccs_tool doesn't support adding altnames to a node....but you guessed that :)
> element altname: Relax-NG validity error : Element clusternode has extra
> content: altname
>
> So my question is what happened with this tag in RHEL5? Is it
> "deprecated"? And how to achieve HA in case of failure of ethernet
> interface. Now there is no redundant channel for communication between
> cluster members.
The tag is there but it's not well tested, and the DLM only supports multi-home
when using SCTP (also not well tested).
The recommended way to use redundant ethernets with cluster software is the
ethernet bonding driver.
--
Patrick
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