HP Insight Control for Linux 6.2 User Guide

25.8 Troubleshooting discovery problems
The following table describes possible causes of problems that may occur during the device
discovery process and provides actions to correct them.
Corrective actionsCause/Symptom
Use the Options→Security→Credentials→Global
Credentials menu item to verify or set this parameter
There may be additional read community string settings
in addition to public, but public must be specified.
Discovery and system identification fail
To discover or identify a server that becomes a managed
system, HP SIM requires that the SNMP read community
string must be set to public in the global credentials for
that server. The value public is the default value. .
Perform the appropriate action:
• Verify that the DCHP configuration properly specifies
the tftp server.
• Verify that the tftp server is properly configured.
• If this server was previously discovered in HP SIM
and subsequently deleted, it is possible that a PXE
configuration file might still exist for this server in the
/opt/repository/boot/pxelinux.cfg/
directory. Examine this directory for files that match
the MAC address of the server and delete any you
find.
NOTE: All MAC addresses file names are prepended
with the text 01.
Network configuration requirements are documented in
the HP Insight Control for Linux Installation Guide.
Discovery of new servers fails
The server failed to PXE boot into the RAM Disk and there
is no Device Discovery task in the Task Results list.
Run the following command so that the cmfd daemon
disconnects from the managed system that is being
rediscovered or reimaged:
# cmfmgr -s `headnode` disable
managedsystem
Where managedsystem is the Insight Control for Linux
name; for example, icelx12. You can use the shownode
info command to find the Insight Control for Linux
name.
Use the following to reconnect:
# cmfmgr -s `headnode` enable managedsystem
Bare Metal Discovery stalls
This issue may occur when rediscovering or reimaging a
managed system that CMF monitors.
Perform the appropriate action:
• Select Configure→Management
Processor→Credentials… to ensure that the default
management processor credentials are set. These
should have been configured during the installation
process. If they are not configured, set the default
credentials now.
• Select Configure→Management
Processor→Credentials… and edit the credentials
for newly discovered server to match the ones that you
use to log in to the management processor.
Device Discovery task fails
The Finalize Insight Control for Linux Discovery operation
failed when setting the credentials on the associated
management processor.
Perform the appropriate action:
• Select Options→Data Collection, specifying the server
that failed as the target. Verify this task completed
successfully in the Task Results window.
• Run the Data Collection Report on the system, which
is accessible from the Tools & Links page for the
system, and verify that there is a Network Interface
section containing one or more MAC address(es).
The Configure System to Boot from Local Disk operation
failed.
25.8 Troubleshooting discovery problems 231