[Linux-cluster] Cman with two node on different subnet

Jeff Sturm jeff.sturm at eprize.com
Sun Nov 29 16:12:39 UTC 2009

-----Original Message-----
> From: linux-cluster-bounces at redhat.com
[mailto:linux-cluster-bounces at redhat.com] On Behalf Of Cyril FERAUDET
> Sent: Saturday, November 28, 2009 4:56 PM
> To: sdake at redhat.com; linux clustering
> Subject: Re: [Linux-cluster] Cman with two node on different subnet

> I've no way to add vlan or configure broadcast cause it's two personal
server hosted by one of many webhosting company.

For testing purposes, perhaps you could establish a VPN connection
between the two hosts (e.g. with openvpn or openswan) and configure a
private subnet over the VPN link.  That way all multicast traffic would
be tunneled over the VPN link.

Beware that if the two hosts are not in close proximity and do not have
a reliable, low-latency network connection, the cluster could perform
poorly and/or behave erratically.  In my experience, such clusters are
only as reliable as the network connecting them.  (That's to say we
learned a lot about networks before we got ours to perform reliably


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