Installation guide

Section 4.1:Configuring a Service 75
Service
Property
or
Resource
Description
IP address One or more Internet protocol (IP) addresses may be assigned to a service.
This IP address (sometimes called a "floating" IP address) is different from
the IP address associated with the host name Ethernet interface for a cluster
system, because it is automatically relocated along with the service resources,
when failover occurs. If clients use this IP address to access the service,
they will not know which cluster system is running the service, and failover
is transparent to the clients.
Note that cluster members must have network interface cards configured in
the IP subnet of each IP address used in a service.
Netmask and broadcast addresses for each IP address can also be specified; if
they are not, then the cluster uses the netmask and broadcast addresses from
the network interconnect in the subnet.
Disk
partition
Specify each shared disk partition used in a service.
Mount
points, file
system
types,
mount
options,
NFS export
options,
and Samba
shares
If using a file system, specify the type of file system, the mount point, and any
mount options. Mount options available to specify are the standard file system
mount options that are described in the mount(8) manual page. It is not
necessary to provide mount information for raw devices (if used in a service).
The ext2 and ext3 file systems are the recommended file systems for a cluster.
Although a different file system may be used (such as reiserfs), only ext2 and
ext3 have been thoroughly tested and are supported.
Specify whether or not to enable forced unmount for a file system. Forced
unmount allows the cluster service management infrastructure to unmount
a file system even if it is being accessed by an application or user (that is,
even if the file system is "busy"). This is accomplished by terminating any
applications that are accessing the file system.
cluadmin will prompt whether or not to NFS export the filesystem and if
so, what access permissions should be applied. Refer to Section 6.1, Setting
Up an NFS Service for details.
Specify whether or not to make the filesystem accessible to Windows clients
via Samba.