HP XC System Software Installation Guide Version 3.1

a. Accept the default value offered for the PBS_HOME directory, which is /var/spool/PBS.
b. When prompted for the type of PBS installation, select: option 1 (Server, execution and
commands).
c. If available, enter the license key during the interactive installation. Otherwise, you can execute
the script named /usr/pbs/etc/pbs_setlicense on the PBS server node after the installation
is complete. See “Replicate Execution Nodes” (page 179) for more information.
d. Because you must perform additional installation and configuration steps, enter n (no) when the
following prompt is displayed:
Would you like to start PBS now? n
2. Install one of the PBS execution nodes using the following values. Later, you will replicate this
installation to the remaining execution nodes, as described in “Replicate Execution Nodes” (page 179).
NOTE: You are not prompted for license information during installation of an execution node.
a. When prompted for the type of PBS installation, select: option 2 (Execution only).
b. When you are prompted for the name of the PBS server node, provide an internally resolvable
name (such as n16 for the head node of a 16-node system), using the letter n as a node-naming
prefix.
c. Respond appropriately when the following installation script prompt is displayed:
Would you like to start PBS now?
• If you have finished the installation (no additional PBS clients to install), enter y (yes) and
invoke the software from the PBS server node manually, as described in its user
documentation. Proceed to “Configure PBS Professional under HP XC”.
• If you are installing optional PBS client nodes, enter n (no) and proceed to step 3.
3. Install optional PBS clients, specifying the following values:
a. When prompted for the type of PBS installation, select: option 3 (Commands only).
b. When you are prompted for the name of the PBS server node, provide an internally resolvable
name (such as n16 for the head node of a 16-node system), using the letter n as a node-naming
prefix.
c. For PBS client installations only, you are not prompted to start PBS at the end of the installation.
Invoke the software from the PBS server node manually, as described in its user documentation.
NOTE: For PBS client installations, you are not prompted for a license key.
L.5 Configure PBS Professional under HP XC
Unless specified otherwise, enter all configuration commands from the PBS server (front-end node).
Perform the following configuration tasks:
• “Configure the OpenSSH scp Utility”
• “Remove Nodes from the SLURM or LSF Configuration”
• “Add Nodes to the PBS Professional Configuration”
L.5.1 Configure the OpenSSH scp Utility
By default, PBS Professional uses the rcp utility to copy files between nodes. The default HP XC
configuration disables rcp in favor of the more secure scp command provided by OpenSSH. To use PBS
Professional on HP XC, configure HP XC to default to scp as follows:
1. Using a text editor of your choice, open the /etc/pbs.conf file on the server node.
2. Search for the configuration variable PBS_SCP, and assign it the value /usr/sbin/scp as follows:
PBS_SCP=/usr/bin/scp
3. Save your change and exit the file.
4. Repeat this procedure on each execution node before proceeding to the task described in “Replicate
Execution Nodes” (page 179).
178 Installing and Using PBS Professional