HP Insight Control for Linux 6.0 User Guide

A time out of five days is in effect for an OS installation using Kickstart or AutoYaST files so that
tasks do not hang indefinitely.
You can change the number of Insight Control for Linux tasks that can be run concurrently. For
information, see Section 21.8 (page 208)
1.8 Synchronized system clocks
When using Insight Control for Linux, and especially when using Insight Control for Linux tools
to install operating systems on managed systems, to capture and deploy Linux images, HP
recommends that you keep system clocks up to date and synchronized.
Synchronization is required for the Console Maintenance Facility to access a managed system
using SSH.
Capturing an image from or deploying an image to a server whose system time is incorrect can
cause a large number of error messages when the image is deployed. These messages do not
affect the deployment, but they can add significant time delays to the deployment.
To avoid this and other problems, always synchronize the clock on the CMS and all of your
managed systems.
NOTE: Note that the network ports used by Network Time Protocol (NTP) are not among the
ports listed to be opened in the HP Insight Control for Linux Installation Guide.
If you decide to implement NTP, you must make sure these ports are open on your firewall. The
default ports for NTP are UDP:123 and TCP:123.
1.9 Validating RPM signatures
The RPMs for HP Insight Control for Linux, HP Insight Control virtual machine management,
and HP Insight Control power management are digitally signed with a private key. You have
the option of using the public key shipped on the Insight Control for Linux ISO image to validate
and verify the RPMs.
Although this verification process is optional for you, it ensures that HP is the creator of the code
and that the code has not been modified since it was signed.
For more information on validating RPM signatures, see the HP Insight Control for Linux Installation
Guide.
1.10 HP Insight Control for Linux RAM disk environment
The HP Insight Control for Linux RAM disk environment is a fully functioning operating
environment in memory that is used to support discovery, registration, and configuration of HP
ProLiant servers equipped with Integrated Lights Out (iLO and iLO 2) or, for some servers,
LO100i management processors. For a list of supported servers supported by Insight Control
for Linux, see the HP Insight Control for Linux Support Matrix
The RAM disk's operating environment is enhanced to support HP ProLiant servers and HP
Insight Control for Linux.
The RAM disk environment is initiated when an HP ProLiant server initiates a network boot
(PXE or virtual media) from a CMS that is installed with the SystemImager Insight Control for
Linux boot RPMs. The operating mode of the RAM disk is determined by kernel command line
parameters passed as part of the PXE boot process.
1.8 Synchronized system clocks 17