Understanding hplog

Answer

The hplog utility allows system administrators to monitor messages in the ProLiant Integrated Management Log (IML).  This log is visible on ProLiant servers which have Remote "Lights Out" management capabilities even if the server is powered off. 

 NOTE:

• You must be root to run the hplog command.
• The hplog command is located in the /sbin directory.
• The hplog command reports on the host to which you are connected. In HA environments, you must be logged in as root on the HA1 host to view the log for that machine and you must log into the HA2 host to view the log for that machine. Also, hplog does not report on the MSA500 shared array.

hplog -v formats and displays the status of the host device. There are four types of log entries:  Caution, Repaired, Information, and Critical. Each entry is two lines long. You can ignore the first number. In the Caution log entry below, 0013 means that this was the thirteenth entry in the log. You can also ignore the last number on the first line which is always 0001. 

A Caution log entry often describes a device failure; in this case it shows that a host disk has failed. In all Caution messages, the two dates and times are identical because they show the moment the event occurred.

0013 Caution        21:31  04/05/2008 21:31  04/05/2008 0001

LOG: Drive Array Device Failure (Slot 0, Bus 1, Bay 2)

The following example shows a Repaired log entry that corresponds to the previous Caution log entry. The drive array failure has been repaired so the status has changed to repaired and the second time and date has changed to reflect the date and time of repair. This host drive failed at 21:31 on 04/05/2008 and was replaced at 19:50 on 04/07/2008.

0016 Repaired       21:31  04/05/2008 19:50  04/07/2008 0001

LOG: Drive Array Device Failure (Slot 0, Bus 1, Bay 2)

The following example shows an Information log entry. Depending on the event that has occurred, you may need to intervene.

0004 Information    09:30  09/29/2006 09:30  09/29/2006 0001

LOG: CFG2HTML Proliant Server report successfully created

The following example shows a Critical log entry that requires further investigation. Use the error description and time and date to troubleshoot the problem.

0003 Critical       09:11  08/31/2006 09:11  08/31/2006 0001

LOG: An Unrecoverable System Error (NMI) has occurred

Viewing Temperatures for Components (hplog –t)

hplog –t  displays the current temperature and the threshold levels of all temperature sensors. Use this to check current temperatures for the various parts inside the host and compare those to threshold values.  The thresholds are set by HP.  If a part exceeds its threshold, the host will automatically initiate a shutdown.

In the following output example, scan the STATUS column. Nominal means that the temperature is within normal range.

ID     TYPE        LOCATION             STATUS    CURRENT            THRESHOLD

 1  ADM1022      CPU (1)                   Nominal     125F/ 52C             212F/100C

 2  ADM1022      I/O Zone                  Nominal     100F/ 38C             143F/ 62C

 3  ADM1022      CPU (2)                   Nominal     127F/ 53C             212F/100C

 4  ADM1022      Processor Zone        Nominal      87F/ 31C              140F/ 60C

 5  ADM1022      Pwr. Supply Bay      Nominal      84F/ 29C               123F/ 51C

Viewing the Status of all Fans (hplog –f)

hplog –f shows the status of all fans inside the host and NOT the fans built into the power supplies.  When scanning this output, look for STATUS to be Nominal.  Do not be concerned by Low as the FAN SPEED; it is expected.

 ID     TYPE        LOCATION             STATUS          REDUNDANT            FAN SPEED

 1  Var. Speed    Processor Zone          Nominal           Yes                              Low    ( 18)

 2  Var. Speed    Processor Zone          Nominal           Yes                              Low    ( 18)

 3  Var. Speed    I/O Zone                    Nominal           Yes                              Low    ( 18)

 4  Var. Speed    I/O Zone                    Nominal           Yes                              Low    ( 18)

 5  Var. Speed    Processor Zone          Nominal           Yes                              Low    ( 18)

 6  Var. Speed    Processor Zone          Nominal           Yes                              Low    ( 18)

 7  Var. Speed    Pwr. Supply Bay        Nominal           Yes                              Low    ( 18)

 8  Var. Speed    Pwr. Supply Bay        Nominal           Yes                              Low    ( 18)

Viewing the Status of all Power Supplies (hplog –p)

hplog –p shows the status of all power supplies.  Normal power supplies have a Nominal status and the REDUNDANT column is Yes. If a power supply has a failed status, contact HP with the location.

ID        TYPE               LOCATION                STATUS          REDUNDANT

1          Standard          Pwr. Supply Bay          Nominal           No

2          Standard          Pwr. Supply Bay          Failed               No

Clearing hplog

You can clear the hplog by running the following command as root:

/sbin/hpasmcli -s "clear iml"

If successful, the command produces the following message:

IML Log successfully cleared.

If you are switching hosts, you may clear the hplog by running a GUI tool as follows:

To exit cpqimview:

1.      Scroll back to the File tab.

2.     Scroll down to Exit.

3.     Press Enter.