HP Insight Management Agents 9.20 Managing ProLiant Servers with Linux HOW TO Whitepaper

Table 2 Controller, health-daemon, and kernel driver combinations (continued)
kernel driverDev fileDaemon
hpilo
module
available?
hp-OpenIPMI
installed?
Red Hat
Enterprise
Linux
Kernel version
(uname -r)
Lights-Out
controller
hpilo/dev/hpilohpasmlitedYesNANANAiLO 3
distro IPMI/dev/ipmi0hpasmlitedNoNANANAiLO 4
hpilo/dev/hpilohpasmlitedYesNANANAiLO 4
Another source of information includes the following manpages provided with the hp-health
package:
• hp-health
• hp-asr
• hpasmcli
• hpuid
• hplog
• hpbootcfg
• hp_mgmt_install
These manpages include detailed information on error messages and possible action that the
administrator can take.
Additional information about the Insight Management SNMP Agents for HP ProLiant Systems is
available at the following locations:
• http://www.hp.com/servers/manage
• http://h18000.www1.hp.com/products/servers/management/agents.html
Health Monitor
The Health Monitor augments the hardware features built into ProLiant servers. Basic features, such
as temperature, fan, power supply, and memory monitoring, are standard on almost all ProLiant
servers. On some ProLiant servers, the Health Monitor supports features such as variable-speed
fans, server lights that give a visual indication of a possible error condition, and Advanced Memory
Protection (AMP). The AMP feature allows the capability of reserving memory for failover if a Single
Bit Correctable Error (SBCE) threshold is exceeded.
NOTE: On some ProLiant servers, the entire memory subsystem can be mirrored to survive an
uncorrectable memory error. Without AMP, uncorrectable memory errors are always fatal and
cause a kernel panic. AMP allows a server to continue execution until the faulty memory can be
replaced. Mirrored AMP solutions usually allow removing the memory board that has the faulty
memory dual in-line memory module (DIMM) and replacing the faulty DIMM while the server
continues execution. When the repaired AMP memory board is inserted back into the server, the
AMP mirror is automatically restored. This allows mission-critical 24 x 7 applications to continue
execution without interruption or downtime.
The following sections explain the features the Health Monitor provides for the overall health of
the ProLiant server.
System temperature monitoring
A ProLiant server can contain several temperature sensors. On ProLiant servers that have intelligent
temperature sensors, determine the current and threshold temperatures by running hplog -t.
HP System Health Application and Command Line Utilities(hp-health) 7