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2. ## Verifying the Installation After you have completed the installation and configuration, check that the cluster nodes have connectivity. ### To Verify the Installation Become superuser on the master-eligible nodes. Run the `nhadm` tool:
       # /opt/SUNWcgha/sbin/nhadm check starting
If all checks pass the validation, the installation of the Foundation Services on the nodes of your cluster has been successful. For more information, see the `nhadm`(1M) and the `cluster_nodes_table`(4) man pages. ## Troubleshooting and Restarting the `nhinstall` Tool Most warnings displayed by the `nhinstall` tool do not require that any action be taken. When the `nhinstall` tool is launched, the tool parses the configuration files. If the `nhinstall` tool encounters errors in the files, it exits and provides a list of error messages. A progress indicator monitors the progress of the installation so you can continue the installation from the point of failure when you restart the `nhinstall` tool. If an error occurs during the installation process, fix the error and then relaunch the `nhinstall` tool:
    # cd /opt/SUNWcgha/sbin
    # ./nhinstall -r config_file_directory -l logfile
2. Note - If you modify the configuration files to correct an error, the `nhinstall` tool displays a warning that the configuration has changed. The tool then prompts you to reset the installation. For information, see Resetting the `nhinstall` Tool for a New Installation. ## Resetting the `nhinstall` Tool for a New Installation If you are installing a new version of the software on the cluster or a new cluster configuration, you must start the installation from the beginning. You can reset the `nhinstall` tool in one of two ways: By removing the progress indicator By clearing the installation files and directories, including the progress indicator ### To Remove the Progress Indicator and Reset the `nhinstall` Tool To reset the `nhinstall` tool by removing the progress indicator, perform the following steps: Log in to the installation server as superuser. Reset the `nhinstall` tool and remove the progress indicator:
       # cd /opt/SUNWcgha/sbin
       # ./nhinstall -r config_file_directory reset
2. The next time that you launch the `nhinstall` tool, the installation starts from the beginning. ### To Clear the Installation Environment and Reset the `nhinstall` Tool To reset the `nhinstall` tool and clear the installation directories and files, perform the following steps: Log in to the installation server as superuser. Unshare all shared and exported directories, and remove the temporary files, including the progress indicator:
       # cd /opt/SUNWcgha/sbin
       # ./nhinstall -r config_file_directory clear
The shared and exported directories are no longer shared or exported. All temporary files are deleted. The installation environment is cleared. The next time that you launch the `nhinstall` tool, the installation starts from the beginning.
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