In Oracle® Clusterware Administration and Deployment Guide 11g Release 2 (11.2), the section, Adding a Cluster Node on Linux and UNIX Systems, lists the following steps:
Ensure that you have successfully installed Oracle Clusterware on at least one node in your cluster environment. To perform the following procedure, Grid_home must identify your successfully installed Oracle Clusterware home.
Verify the integrity of the cluster and node3:
$ cluvfy stage -pre nodeadd -n node3 [-fixup [-fixupdir fixup_dir]] [-verbose]
You can specify the -fixup option and a directory into which CVU prints instructions to fix the cluster or node if the verification fails.
Navigate to the Grid_home/oui/bin directory on node1 and run the addNode.sh script using the following syntax, where node3 is the name of the node that you are adding and node3-vip is the VIP name for the node:
If you are using Grid Naming Service (GNS):
$ ./addNode.sh -silent "CLUSTER_NEW_NODES={node3}"
If you are not using GNS:
$ ./addNode.sh -silent "CLUSTER_NEW_NODES={node3}" "CLUSTER_NEW_VIRTUAL_HOSTNAMES={node3-vip}"
Check that your cluster is integrated and that the cluster is not divided into separate parts by running the following CVU command. This command verifies that any number of specific nodes has been successfully added to the cluster at the network, shared storage, and clusterware levels:
$ cluvfy stage -post nodeadd -n node3 [-verbose]