Removing the Software

To remove LSF, see the documentation that came with the software.

The easiest way to remove Sun HPC ClusterTools 3.0 software is by using the configuration tool, install_gui. See the next section for details. If you prefer to remove the software at the command line, you may do so using the provided removal scripts. See "Removing the Software: Command Line" for instructions.

Removing the Software: Configuration Tool

1. Locate a configuration file or files for the cluster.

   To remove the software from your cluster, you will need a configuration file that describes the cluster. Ideally you should use the configuration file you created when installing the software. If you cannot locate that file, you will have to create one. You can use the configuration tool to create the file. (See Chapter 3 of the Sun HPC ClusterTools 3.0 Installation Guide.)

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   Note -

   The configuration tool will remove the software from up to 16 nodes at once. If you need to remove software from a cluster of more than 16 nodes, you must remove it first from a group of up to 16 of the nodes in your cluster. Then remove from more nodes by repeating the removal process on additional groups of nodes until you have removed the software from all the nodes in the cluster. The procedure is similar to installing the software on a cluster of more than 16 nodes. See Section 3.1.2 of the installation guide for more information.

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2. Load the Sun HPC ClusterTools 3.0 CD-ROM in the CD-ROM drawer.

   The CD-ROM mount point must be mounted on all the nodes in the cluster.

3. Enable root login access.

   By default, most systems allow logins by root only on their console devices. To enable root login access during software removal, you must edit the /etc/default/login file on each node in the cluster. In this file on each node, find this line:

   CONSOLE=/dev/console

and make it into a comment by adding a # before it:

#CONSOLE=/dev/console

After removing the software, you should disable root login access again if your site's security guidelines require it.

1. As root, launch the install_gui tool with the configuration file.

   You can load the configuration file either from the command line or from within the tool after it has been launched.

   • At the command line, launch the configuration tool using the name of the configuration file as an argument:

     # /cdrom/hpc_3_0_ct/Product/Install_Utilities/install_gui hpc_config

   • Alternatively, you can load the configuration file after launching the tool by choosing Load from the File menu.

2. Select the Remove task and click on the Go button.

For help using the configuration tool, choose Help with Configuration Tool from the Help menu.

Removing the Software: Command Line

1. Locate a configuration file or files for the cluster.

   To remove the software from your cluster, you will need a configuration file that describes the cluster. Ideally you should use the configuration file you created when installing the software. If you cannot locate that file, you will have to create one.

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   Note -

   You can use the CCM tools to install on up to 16 nodes at a time. For clusters with more than 16 nodes, you will have to repeat the installation process on groups of up to 16 nodes at a time until you have installed the software on the entire cluster.

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2. Place the Sun HPC ClusterTools 3.0 distribution CD-ROM in the CD-ROM drive.

3. Go to the directory on the CD-ROM containing the release packages.

   This directory must be mounted with read/execute permissions (755) on all the nodes in the cluster:

   # cd /cdrom/hpc_3_0_ct/Product/Install_Utilities/

4. Run hpc_remove; use the -c option to specify the directory containing the hpc_config file.

   # ./hpc_remove -c /config_dir_install

   The -c tag causes hpc_remove to look for a file named hpc_config in the specified directory. If you want to remove the software using a configuration file with a different name, you must specify a full path including the new file name after the -c tag.