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2. ### To Create the `nhfs.conf` File for a Dataless Node Log in to the dataless node as superuser. Create the `nhfs.conf` file for the dataless node:
       # cp /etc/opt/SUNWcgha/nhfs.conf.template /etc/opt/SUNWcgha/nhfs.conf
3. Edit the `nhfs.conf` file to suit your cluster configuration. An example file for a dataless node on a cluster with the domain ID `250`, with network interfaces `eri0`, `eri1`, and `cgtp0` would be as follows:
       Node.NodeId=40
       Node.NIC0=eri0
       Node.NIC1=eri1
       Node.NICCGTP=cgtp0
       Node.UseCGTP=True
       Node.Type=Dataless
       Node.DomainId=250
       CMM.IsEligible=False
       CMM.LocalConfig.Dir=/etc/opt/SUNWcgha
3. - Choose a unique nodeid and unique node name for the dataless node. To view the nodeid of each node already in the cluster, see the `/etc/opt/SUNWcgha/cluster_nodes_table` file on the master node. For more information, see the `nhfs.conf`(4) man page. If you have not installed the CGTP patches and packages, do the following: Disable the `Node.NIC1` and `Node.NICCGTP` parameters. To disable these parameters, add a comment mark (#) at the beginning of the line containing the parameter if this mark is not already present. Configure the `Node.UseCGTP` and the `Node.NIC0` parameters: `Node.UseCGTP=False` `Node.NIC0=`interface-name where interface-name is the name of the NIC0 interface, for example, `hme0`, `qfe0`, or `eri0`. To enable the Watchdog Timer, you must modify the `nhfs.conf` file. The Watchdog Timer can be configured differently on each node according to your requirements. For more information, see the `nhfs.conf`(4) man page. ### To Set Up File Systems for a Dataless Node Update the `/etc/vfstab` file in the dataless node's root directory to add the NFS mount points for master node directories that contain middleware data and services. Log in to a dataless node as superuser. Edit the entries in the `/etc/vfstab` file. If you have configured the CGTP, replace the host name of the master node with the host name associated with the floating IP address for the `cgtp0` interface that is assigned to the master role, for example, `master-cgtp`. If you have not configured the CGTP, replace the host name of the master node with the host name associated with the floating IP address for the NIC0 interface that is assigned to the master role, for example, `master-nic0`. For more information about floating addresses of the master nodes, see To Create Floating Address Triplet Assigned to the Master Role. Define the mount points `/SUNWcgha/remote`, `SUNWcgha/services`, and `/SUNWcgha/swdb`: If you have configured the CGTP, use the floating IP address for the `cgtp0` interface that is assigned to the master role to define the mount points.
         master-cgtp:/SUNWcgha/local/export/data -       \
         /SUNWcgha/remote        nfs     -       yes     rw,hard,fg,intr

         master-cgtp:/SUNWcgha/local/export/services/ha_v1/opt -			\
         /SUNWcgha/services      nfs     -       yes    rw,hard,fg,intr

         master-cgtp:/SUNWcgha/local/export/services -     \
         /SUNWcgha/swdb  nfs    -       yes     rw,hard,fg,intr
   - If you have not configured the CGTP, use the floating IP address for the NIC0 interface that is assigned to the master role.
         master-nic0:/SUNWcgha/local/export/data -       \
         /SUNWcgha/remote        nfs     -       yes     rw,hard,fg,intr

         master-nic0:/SUNWcgha/local/export/services/ha_v1/opt -			\
         /SUNWcgha/services      nfs     -       yes    rw,hard,fg,intr

         master-nic0:/SUNWcgha/local/export/services -     \
         /SUNWcgha/swdb  nfs    -       yes     rw,hard,fg,intr
   All file systems that you mount by using NFS must be mounted with the options `fg`, `hard`, and `intr`. You can also set the `noac` mount option, which suppresses data and attribute caching. Use the `noac` option only if the impact on performance is acceptable. Note - Do not use IP addresses in the `/etc/vfstab` file for the dataless node. Instead, use logical host names. Otherwise, the `pkgadd `-R`` command fails and return the following message:
       WARNING: <cannot install to or verify on <master_ip>
4. Create the mount points `/SUNWcgha/remote`, `/SUNWcgha/services`, and `/SUNWcgha/swdb`:
       # mkdir -p SUNWcgha/remote
       # mkdir -p SUNWcgha/services
       # mkdir -p SUNWcgha/swdb
2. Repeat Step 1 through Step 4 for all dataless nodes in the cluster. ## Integrating a Dataless Node Into the Cluster The following procedures explain how to integrate a dataless node into the cluster. To Update the `/etc/hosts` Files on Each Peer Node To Update the Cluster Node Table ### To Update the `/etc/hosts` Files on Each Peer Node Log in to the master node as superuser. Edit the `/etc/hosts` file to add the following lines:
       IP-address-NIC0		nic0-dataless-node-name
       IP-address-NIC1		nic1-dataless-node-name
       IP-address-cgtp0		cgtp0-dataless-node-name
This modification enables the master node to "see" the network interfaces of the dataless node. Log in to the vice-master node as superuser. Repeat Step 2. This modification enables the vice-master node to "see" the three network interfaces of the dataless node. Log in to a dataless node that is part of the cluster, if a dataless node already exists. Repeat Step 2. This modification enables the dataless node to "see" the three network interfaces of the dataless node. Repeat Step 5 and Step 6 on all other diskless and dataless nodes that are already part of the cluster.
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