and thanks to everyone else for their responses. Our mail was
particularly slow/backed up yesterday and missed lots of timely
responses :)
yes, I see now that gmetric does support spoofing, and the dumping the
sdr to a file before hand with impi will help a great deal. thanks!
On Mar 24, 2008, at 12:00 PM, Nordwall, Douglas J wrote:
thanks for the response
On Mar 24, 2008, at 11:49 AM, Brad Nicholes wrote:
>>>> On 3/24/2008 at 11:56 AM, in message
> <[EMAIL PROTECTED]>, Doug Nordwall <[EMAIL PROTECTED]
> >
> wrote:
>> So, I've run into a situation where there is quite a bit of data
>> sitting on a lights out card that I'd like to get access to with
>> ganglia. Since it supports IPMI, it seems like a great option, and
>> I'd
>> just use ipmitool. Every node has a lights out card, including an
>> admin node that can see all of it
>>
>> 1) when running ipmitool on the local host to access the IPMI from
>> the
>> lights out card, it's brief (around a half a second for an sdr
list),
>> but kind of a serious hit (upwards of 10% cpu) to the node for
what
>> it's getting out of it. while it's not going to be accessed often
>> (once every 10 minutes? 5 minutes?), I'd like to avoid that.
>>
>
> Take a look at the new metric module interface for Ganglia 3.1.
> This would allow you to write a module that interfaced with IPMI to
> collection whatever metrics you want.
hrm, I seemed to have missed this. I am currently using the 3.1
branch, and I've written a couple of python modules for it. where
might you suggest I take a look in the tree?
>
>
>> 2) running ipmitool from the admin node produces no noticeable
impact
>> on the node, but sadly ganglia doesn't know that the data is coming
>> from somewhere else, and there doesn't appear to be any way to tell
>> ganglia (or gmetric for that matter) "hey, send this into the
stream
>> as belong to something else"... i.e. host spoofing.
>>
>
> Gmetric does allow you to spoof. You should be able to collect the
> metrics on the admin node and then spoof the managed node by
> including the spoofing parameters.
>
I did not see this in any documentation, although I may be completely
blind :) I see now that it's not listed everywhere that I looked, but
it is in the code, so I can work with that.
> Brad
>
>
Doug Nordwall
Unix Administrator
EMSL Computer and Network Support
Phone: (509)372-6776; Fax: (509)376-0420
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Doug Nordwall
Unix Administrator
EMSL Computer and Network Support
Phone: (509)372-6776; Fax: (509)376-0420
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