On Tue, 2006-05-23 at 12:43 -0400, Mark Harrington wrote: > Hi All, > > I am playing around with a 2 node NFS Server cluster with RHCS/GFS 4 Update > 3 and had a few questions. > > I could not find much documentation on active-active NFS clusters with RHCS > 4 so I set up a pseudo active-active cluster as follows: > - Created 2 RHCS services that export a single GFS volume with NFS. > - Each service has a prioritized fail-over domain so if: > - Both nodes are up each node will export the GFS volume > - A node goes down the service (& VIP) will fail over to the other node. > > - 1/2 the NFS clients (Web server farm) will mount off one VIP and the > other 1/2 off the other. > - The NFS clients are only permitted to mount 1 service > > 1) We are still testing this configuration but has anyone else setup an NFS > cluster like this? Is there a better way? Can you foresee any issues with > this setup? I don't see any issues. As a matter of fact, I recommend exactly this in the "NFS/GFS cookbook" document I posted a few minutes ago to linux-cluster: http://sources.redhat.com/cluster/doc/nfscookbook.pdf > 3) Do we need to put /var/lib/nfs on a GFS volume so both NFS servers can > update the locks file? Will there be any issues if both NFS servers try to > update the locks file at the same time? I don't think so, but I could be wrong. > 3) Is it possible to do this with NFSv4? I'm pretty sure you can. > Thanks for any help, > Mark Bob Peterson Red Hat Cluster Suite -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
