HP XC System Software Administration Guide Version 4.0

Table Of Contents
NOTE: When the HP XC system is up and running, and you use the cluster_config utility
to change a role, you are prompted to reconfigure SLURM. If you answer no, the existing SLURM
configuration is preserved and is not modified in any way. However, if you made changes with
the cluster_config utility that affect SLURM, such as adding a compute node or moving a
resource management role, HP recommends that you answer yes to update the SLURM
configuration.
When the cluster_config command completes, the golden image is synchronized with the
golden client. You are ready to deploy the golden image to all the nodes in your HP XC system.
Note:
Nodes that have had their configuration changed are set to network boot. This causes the nodes
to reinstall themselves automatically, thus receiving the latest golden image. For nodes to be set
to network boot, the nodes must be operational. The cluster_config command displays any
nodes that could not be reached, and thus are not set to network boot. This is a problem only on
CP6000 systems because each node's EFI environment must be modified. You must resolve the
EFI environment manually for those nodes.
The HP XC System Software Installation Guide fully describes the use of the cluster_config
utility and provides background information to the responses to the utility's prompts.
The --infile and --outfile options to the cluster_config command enable you to export
and import configuration data, and to bypass much of the cluster_config utility interface if
the hardware configuration is unchanged. The configuration data includes the configuration of
availability sets (for systems using improved availability), role assignments, and external
connections. The following lists the sequence of events for using the cluster_config command
with these options:
1. Save the current configuration to a file with the --outfile option of the cluster_config
command:
# cluster_config --outfile conf_file
2. Copy the output file to a file system external to the HP XC system.
3. At some time, you may need to reinstall or modify the existing configuration.
4. Copy the saved configuration file from the external file system back on to an HP XC system
file system, preferably to a disk local to the head node.
5. Run the cluster_config command with its --infile option; specify the saved
configuration file:
# cluster_config --infile conf_file
For more information about this command, see cluster_config(8) and the HP XC System Software
Installation Guide.
11.5.2 The updateimage Command
The updateimage command updates the golden image from the golden client; it does not run
any service configuration scripts. As superuser, you must run this command on the golden client
node. The updateimage command provides a --dry-run option. This option enables you to
inspect the files that will be added to (or deleted from) the golden image, without making any
changes. For example:
# updateimage --gc imageserver --dry-run
If you are satisfied with the list of files that will be updated in the golden image, issue the
command to perform the update:
# updateimage --gc imageserver
11.5 Updating the Golden Image 149