[Linux-cluster] heartbeat over 2 NICs - Hi Christine

[Martin Fuerstenau]

Hi,

in my config here I use 2 dual port network cards in each node. I run a
2 node cluster. The nodes are in two racks in the same room.

Port 1 of Card 1 and Port 1 of card 2 are bonded to bond0 and are (for
fail over and redundancy) connected to 2 Cisco switches. This
configuration is save even in the case if on network card will fail.

Port 2 of Card 1 and Port 2 of card 2 are bionded to interface bond1.
This interface has a private non routed address (192.168....) and is
connected to the second with 2 crossed network cables. Therefore I need
no switch for the cluster internal traffic. And that means more security
because a nonexixting switch can not fail.

This configuration works well now for the last two years.

Yours
Martin Fürstenau
Oce Printing Systems

On Wed, 2008-06-04 at 18:49 +0800, sunhux G wrote:
> Hi Christine,
>  
>  
> I could have searched Redhat knowledgebase but thought would
> be easier if I clarify here.   We plan to cluster two RHES, server A
> & server B (on Ver 5.1AP) 
>  
> a)besides the regular network port for the usual network traffic,
>    we only need one additional network port per server to set up
>    the clustering, is this right?
>  
> b)what if we want to use 2 network ports, then we have to bond
>    the two network ports on server A & the two network ports on
>    server B - is this right?
>  
> c)anything we need to do on the Cisco switch's ports end? We
>    are using Cisco 6513
> 
>  
> Thanks
> U
>  
> On 6/2/08, Christine Caulfield <ccaulfie at redhat.com> wrote: 
>         Jakub Suchy wrote:
>                 Hi,
>                 I would like to know, if it's possible to run
>                 heartbeat (through cman)
>                 over two dedicated network NICs. AFAIK, in old
>                 hearbeat code, it was
>                 possible using serial + NIC. Unfortunately, I was
>                 unable to find this in
>                 any documentation and this is the first time a
>                 customer is requesting
>                 this. (I am not talking about network bonding).
>                 
>         
>         Basically, no.
>         
>         If you want to use 2 NICs then bonding is what you need. cman
>         can use dual NICs after a fashion but it's not supported and
>         even less well tested.
>         
>         Sorry.
>         
>         -- 
>         
>         Chrissie 
>         
>         
>         --
>         Linux-cluster mailing list
>         Linux-cluster at redhat.com
>         https://www.redhat.com/mailman/listinfo/linux-cluster
>         
> 
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