How to Create an NFS Application Resource Group on the Secondary Cluster

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Before You Begin

Complete the procedure How to Create an NFS Application Resource Group on the Primary Cluster.
Ensure that the /etc/netmasks file has IP-address subnet and netmask entries for all logical hostnames. If necessary, edit the /etc/netmasks file to add any missing entries.

Access nodeC as the role that provides solaris.cluster.modify, solaris.cluster.admin, and solaris.cluster.read authorization.
Register SUNW.nfs as a resource type.
```
nodeC# clresourcetype register SUNW.nfs
```
If SUNW.HAStoragePlus has not been registered as a resource type, register it.
```
nodeC# clresourcetype register SUNW.HAStoragePlus
```
Create an application resource group for the device group.
```
nodeC# clresourcegroup create \
-p Pathprefix=/global/etc \
-p Auto_start_on_new_cluster=False \
-p RG_affinities=+++devgrp-stor-rg \
nfs-rg
```
create

Creates the resource group.

–p

Specifies a property of the resource group.

Pathprefix=/global/etc

Specifies a directory into which the resources in the group can write administrative files.

Auto_start_on_new_cluster=False

Specifies that the application resource group is not started automatically.

RG_affinities=+++devgrp-stor-rg

Specifies the resource group where the application resource group must be collocated. In this example, the application resource group must be collocated with the replication resource group devgrp-stor-rg.

If the replication resource group is switched over to a new primary node, the application resource group is automatically switched over. However, attempts to switch over the application resource group to a new primary node are blocked because that breaks the collocation requirement.

nfs-rg

The name of the application resource group.
Add a SUNW.HAStoragePlus resource to the application resource group.
```
nodeC# clresource create -g nfs-rg \
-t SUNW.HAStoragePlus \
-p FileSystemMountPoints=/global/mountpoint \
-p AffinityOn=True \
nfs-dg-rs
```
create

Creates the resource.

–g

Specifies the resource group to which the resource is added.

-t SUNW.HAStoragePlus

Specifies that the resource is of the type SUNW.HAStoragePlus.

–p

Specifies a property of the resource.

FileSystemMountPoints=/global/mountpoint

Specifies that the mount point for the file system is global.

AffinityOn=True

Specifies that the application resource must perform an affinity switchover for the global devices and cluster file systems defined by -p FileSystemMountPoints=. Therefore, when the application resource group fails over or is switched over, the associated device group is switched over.

nfs-dg-rs

The name of the HAStoragePlus resource for the NFS application.
Add a logical hostname resource to the application resource group.
```
nodeC# clreslogicalhostname create -g nfs-rg \
lhost-nfsrg-sec
```
The logical hostname of the application resource group on the secondary cluster is named lhost-nfsrg-sec.

Add an NFS resource to the application resource group.

nodeC# clresource create -g nfs-rg \
-t SUNW.nfs -p Resource_dependencies=nfs-dg-rs nfs-rg

If the global volume is mounted on the primary cluster, unmount the global volume from the secondary cluster.
```
nodeC# umount /global/mountpoint
```
If the volume is mounted on a secondary cluster, the synchronization fails.

Next Steps

Go to Example of How to Enable Data Replication.

Example of How to Enable Data Replication

This section describes how data replication is enabled for the example configuration. This section uses the Availability Suite software commands sndradm and iiadm. For more information about these commands, see the Availability Suite documentation.

This section contains the following procedures:

How to Enable Replication on the Primary Cluster
How to Enable Replication on the Secondary Cluster