Nfs Over Gfs In A Red Hat Cluster - Red Hat ENTERPRISE LINUX 5 - CONFIGURATION NFS OVER GFS Configuration Manual

Chapter 1.

NFS over GFS in a Red Hat Cluster

This document provides a procedure to configure an NFS service in a Red Hat cluster using the
Conga configuration tool. The configured cluster will have the following characteristics:
• There are 5 nodes in the cluster.
• The NFS service runs over a GFS file system.
• There are five NFS clients.
Note that this configuration is not a "high capacity" configuration in the sense that more than one
server is providing NFS service. In this configuration, the floating IP moves about as needed, but only
one server is active at a time.
Figure 1.1, "NFS over GFS in a 5-Node Cluster"
shows the NFS over GFS configuration that this
procedure yields.
Figure 1.1. NFS over GFS in a 5-Node Cluster
In this configuration, Cluster Suite assigns which server will run the NFS service. If that server goes
down, the NFS service will automatically fail over to another server in the cluster. The client will not be
aware of any loss of service.
The NFS resource that this configuration defines will be NFS Version 3 by default. If you need to
restrict what NFS protocol your system provides to its clients, you can do this at NFS startup; this is
not part of cluster configuration.
This remainder of this document is organized as follows:
1