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тАО12-02-2005 10:14 AM
тАО12-02-2005 10:14 AM
hpasm and snmpd traps - how to test? how to configure?
There seems to be a dearth of information about the actual implementatin of hpasm - perhaps because it is a pre-made Redhat package designed for people who only want to click on web interfaces and not really actually know how snmp works. At any rate, I managed to build a Debian package from the RPM and install it on several Proliant DL380 G4 servers, no thanks to HP for creating a Debian package or providing hapsm in some format that conforms to standardized ways Open-Source projects are packaged.
Finally, there is no information on how to test the snmp portion of hpasm. It would be useful to be able to simulate events to see if the traps are actually working. Isn't this the kind of thing that most sysadmins would naturally think of doing?
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тАО12-02-2005 04:09 PM
тАО12-02-2005 04:09 PM
Re: hpasm and snmpd traps - how to test? how to configure?
The easiest way to 'test' for most people is to pull a drive in the array.
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тАО12-02-2005 05:18 PM
тАО12-02-2005 05:18 PM
Re: hpasm and snmpd traps - how to test? how to configure?
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тАО12-02-2005 10:27 PM
тАО12-02-2005 10:27 PM
Re: hpasm and snmpd traps - how to test? how to configure?
HP ProLiant servers have special management hardware that allows the HP ASM software to monitor Power, Thermal, Correctable Memory and Correctable Processor events. ***The HP ASM software will note any changes in the system and will notify the HP System Insight Manager (SIM) and Insight Manager 7 (IM7) of the event***. The HP ASM software understands the thermal operational policy for each individual server and will initiate a graceful OS shutdown should the thermal parameters exceed the thresholds set by the policy. There are many variables that factor into the decision to initiate a graceful OS shutdown. These variables include the presence of redundant fans and power supplies and the operating environment factors such as temperature.
The HP ASM driver will monitor correctable memory and processor errors. While some correctable errors are expected during normal operation, an excessive amount is an indicator of imminent failure. An error will be logged to the HP IML log and notification sent to the Insight Manager console via the HP Insight Management Agents executing on the ProLiant server."
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тАО12-05-2005 10:23 AM
тАО12-05-2005 10:23 AM
Re: hpasm and snmpd traps - how to test? how to configure?
Here is an excerpt from an HP doc regarding the Threshold Agent, which runs as a process cmathreshd:
"The Threshold Agent implements the Threshold MIB. Users can set thresholds on counter- or gauge-
type MIB variables. The Threshold Agent periodically samples each selected MIB variable at a rate
defined by the user.
MIB data values are compared to user-configured thresholds. If a configured threshold is exceeded,
an alarm trap is sent to the configured SNMP trap destination and to Linux email (configurable
through trapemail entries in /opt/compaq/cma.conf file). User-configured alarm thresholds are
permanently saved in the data registry until deleted by the user."
If you understood SNMP, you would know what an MIB and a trap is. Given that it explicity states here in this HP document ("Managing ProLiant servers with Linux") it would be helpful to know precisely how these thresholds are configurued (i.e. what specific configuration file) and also where the trap host is configured (I assume it is in /etc/snmp/snmpd.conf since there hpasm did modify it upon installation. So at least we know that hpasm tries at least minimally to cooperate with the existing ucd-net snmp infrastructure rather than imposing its own hacked version over it.)
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тАО12-05-2005 12:22 PM
тАО12-05-2005 12:22 PM
Re: hpasm and snmpd traps - how to test? how to configure?
Yep, they're in the snmpd.conf file, well they are on my VMWare ESX Server which is a Linux variant.
As for the thresholds, on Windows the thresholds are, as David details, unchangeable except for items like Disk Space etc.
I don't believe they'd be changeable in a Linux environment as I do not think HP would want thresholds governing temperatures etc. changed.
The configuration of those items is nothing to do with SNMP, SNMP is just the messenger boy.
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тАО12-06-2005 04:47 AM
тАО12-06-2005 04:47 AM
Re: hpasm and snmpd traps - how to test? how to configure?
Also, if one cannot set the threshholds or even find good documentation on what the values are supposed to be, how can one rely upon hpasm for critical situations? Before I deploy it and consider it "production" I would definitely want to set the threshholds very low to intentionally trigger alerts to verify that the notification/shutdown processes work. I would need to do extensive testing of this system before I would consider it reliable enough to deploy in a critical environment.
Re: the SNMP setup: yes it did in fact prompt me for a bunch of questions when it installed - but this was not really necessary since I already had an existing SNMP setup...
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тАО06-29-2006 01:31 AM
тАО06-29-2006 01:31 AM
Re: hpasm and snmpd traps - how to test? how to configure?
I know this thread is a little old but I am really interested on knowing how did you solve your questions.
I am trying to manage several Proliant systems through SNMP by using HP Server Management Agents, but I cannot make it work.
I would like to provoke some traps by changing a disk threshold or shutting down a NIC interface, but no success, though I think I have correctly configured snmpd.conf.
The documentation I have found looks very schematic, and it seems you need HP SIM in the manager node to be able to work, but I am using instead a generic SNMP manager.
If you could give me some hints, I would very much appreciate.
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тАО09-08-2006 06:20 PM
тАО09-08-2006 06:20 PM
Re: hpasm and snmpd traps - how to test? how to configure?
/etc/iniit.d/hpasm reconfigure
Not sure about , but in the old version , when you're installing the agent , the configuration ask you about the SNMP configuration , but in the new version default configuration is saved.
With hpasm reconfigure , the system will stop the agents and will ask you about SNMP configurations .
To test , I put my Cisco switch in shutdown and I was able to receive the trap.
Hope this will help.