Layering HP XC System Software on Red Hat Enterprise Linux HowTo

3 Before You Begin
• Determine which node will be the head node of the HP XC system.
The head node in an HP XC system is always the node connected to the highest port number
of any node on the Root Administration Switch and the Root Console Switch. For more
information, see the HP XC System Software Hardware Preparation Guide.
• Plan for the installation parameters.
You will be prompted for the values of the following parameters during the Red Hat
installation and again by the HP cluster_prep utility. It is critical that you plan your
responses and provide the values that are appropriate to the HP XC system head node.
— External IP address/hostname
IMPORTANT:
When you are prompted for a hostname during the Red Hat installation, specify the
IP name and address of your system's external network connection.
Later, when you run the HP cluster_prep utility, the system name of the head node
is changed to reflect its role on the HP XC system's administrative network; this change
has no affect on the IP address or the name used to access the head node from outside
the HP XC system. After running the cluster_prep utility, confirm that the new,
system-generated name for your head node is different from the IP name assigned to
your system's external network connection.
— gateway
— netmask
— dns server
For information on these parameters and the cluster_prep utility, see the HP XC Installation
Guide.
• Plan the disk partitions for the disk on the head node. Table 2 suggests the order of the
partitions and provides a method for determining the recommended partition sizes for the
head node's disk for both the HP CP3000 and HP CP4000 cluster platforms. Because total
disk size may vary, partition sizes are given as a percentage of the total disk size, minus 6
GB for the three swap partitions. If you choose to place the /hptc_cluster file system on
this disk, use the third column to calculate the partition size; if you choose to place this file
system on another disk, use the fourth column to calculate the partition size.
Table 2 Recommended Disk Partition Sizes
Partition Size (Disk excludes /hptc_cluster
File System)
Partition Size (Disk includes /hptc_cluster
File System)
Partition or File System
Name
2 GB each (6 GB total swap space)2 GB each (6 GB total swap space)3 swap partitions
1 percent of remaining disk space1 percent of remaining disk space
/boot
60 percent of remaining disk space50 percent of remaining disk space
/ (root)
39 percent of remaining disk space29 percent of remaining disk space
/var
N/A20 percent of remaining disk space
/hptc_cluster
For example, if the system disk for the head node has a capacity of 156 GB, and the disk will
accommodate the /hptc_cluster file system, the partition sizes are as follows:
10 Layering HP XC System Software on Red Hat Enterprise Linux HowTo