Typically, you can use the response file that the installer generates on one system to add nodes to an existing cluster.
To add nodes using response files
See Sample response file for adding a node to a VCS cluster.
# ./installer -responsefile /tmp/response_file
Where /tmp/response_file is the response file's full path name.
Depending on the fencing configuration in the existing cluster, the installer configures fencing on the new node. The installer then starts all the required processes and joins the new node to cluster. The installer indicates the location of the log file and summary file with details of the actions performed.