openstack team mailing list archive

[Luis Gervaso <luis@xxxxxxxxx>]

I think so.

If it is in response or not, it's a truly heartbeat

On Tue, Apr 24, 2012 at 9:46 PM, Brian Schott <
brian.schott@xxxxxxxxxxxxxxxxxx> wrote:

> Yeah, but does that mean the instance is alive and billable :-)?  I guess
> that counts!  I thought they were only in response to external API/admin
> requests.
>
> -------------------------------------------------
> Brian Schott, CTO
> Nimbis Services, Inc.
> brian.schott@xxxxxxxxxxxxxxxxxx
> ph: 443-274-6064  fx: 443-274-6060
>
>
>
> On Apr 24, 2012, at 3:42 PM, Luis Gervaso wrote:
>
> This kind of messages are coming from nova exchange aprox. each 60 secs
>
> Can be this considered as a heartbeat for you?
>
>  [x] Received '{"_context_roles": ["admin"], "_msg_id": "
> a2d13735baad4613b89c6132e0fa8302", "_context_read_deleted": "no",
> "_context_request_id": "req-d7ffbe78-7a9c-4d20-9ac5-3e56951526fe",
> "args": {"instance_id": 6, "instance_uuid": "e3ad17e6-dd59-4b67-a7d0-e3812f96c2d7",
> "host": "ubuntu", "project_id": "c290118b14564257be26a2cb901721a2",
> "rxtx_factor": 1.0}, "_context_auth_token": null, "_context_is_admin":
> true, "_context_project_id": null, "_context_timestamp":
> "2012-03-24T01:36:48.774891", "_context_user_id": null, "method":
> "get_instance_nw_info", "_context_remote_address": null}'
>
>
>
> On Tue, Apr 24, 2012 at 9:31 PM, Brian Schott <
> brian.schott@xxxxxxxxxxxxxxxxxx> wrote:
>
>> I take it that the instance manager doesn't generate any kind of
>> heartbeat, so whatever monitoring/archiving service we do should internally
>> poll the status over MQ?
>>
>>
>>  -------------------------------------------------
>> Brian Schott, CTO
>> Nimbis Services, Inc.
>> brian.schott@xxxxxxxxxxxxxxxxxx
>> ph: 443-274-6064  fx: 443-274-6060
>>
>>
>>
>> On Apr 24, 2012, at 2:10 PM, Luis Gervaso wrote:
>>
>> Probably an extra audit system is required. I'm searching for solutions
>> in the IT market.
>>
>> Regards
>>
>> On Tue, Apr 24, 2012 at 6:00 PM, Loic Dachary <loic@xxxxxxxxxxxx> wrote:
>>
>>> **
>>> On 04/24/2012 04:45 PM, Monsyne Dragon wrote:
>>>
>>>
>>>  On Apr 24, 2012, at 9:03 AM, Loic Dachary wrote:
>>>
>>>  On 04/24/2012 03:06 PM, Monsyne Dragon wrote:
>>>
>>> Yes,  we emit bandwidth (bytes in/out) on a per VIF basis from each instance The event has the somewhat generic name of 'compute.instance.exists'  and is emitted on an periodic basis, currently by a cronjob.
>>> Currently, we only populate bandwidth data from XenServer, but if the hook is implemented for  the kvm, etc drivers, it will be picked up automatically for them as well.
>>>
>>> Note that we could report other metrics similarly.
>>>
>>>  Hi,
>>>
>>> Thanks for clarifying this. So you're suggesting that the metering agent
>>> should collect this data from the nova queue instead of extracting it from
>>> the system (interface, disk stats etc.) ? And for other openstack
>>> components ( as Nick Barcet suggests below ) the metering agent will have
>>> to find another way. Or do you have something else in mind ?
>>>
>>>
>>>  If it's something we have access to, we should emit it in those usage
>>> events.  As far as the other components, glance is already using the same
>>> notification system.  (there was a thread awhile back about putting it into
>>> openstack.common)  It would be nice to have all of the components using it.
>>>
>>>
>>>  Hi,
>>>
>>> I don't see a section in http://wiki.openstack.org/SystemUsageDataabout making sure all messages related to a billable event are accounted
>>> for. I mean, for instance, what if the event that says an instance is
>>> deleted is lost ? How is the billing software supposed to cope with that ?
>>> If it checks the status of all VM on a regular basis to deal with this, how
>>> can it figure out when the missed event occured ?
>>>
>>> It would be worth adding a short section about this in
>>> http://wiki.openstack.org/SystemUsageData . Or I can do it if you give
>>> me a hint.
>>>
>>> Cheers
>>>
>>>   Cheers
>>>
>>> On 04/24/2012 12:17 PM, Nick Barcet wrote:
>>>
>>>  On 04/23/2012 10:45 PM, Doug Hellmann wrote:
>>>
>>>  > > > On Mon, Apr 23, 2012 at 4:14 PM, Brian Schott> <brian.schott@xxxxxxxxxxxxxxxxxx> <mailto:brian.schott@xxxxxxxxxxxxxxxxxx> <brian.schott@xxxxxxxxxxxxxxxxxx>> wrote:> >     Doug,> >     Do we mirror the table structure of nova, etc. and add>     created/modified columns? > > >     Or do we flatten into an instance event record with everything?  > > > I lean towards flattening the data as it is recorded and making a second> pass during the bill calculation. You need to record instance> modifications separately from the creation, especially if the> modification changes the billing rate. So you might have records for:> > created instance, with UUID, name, size, timestamp, ownership> information, etc.> resized instance, with UUID, name, new size, timestamp, ownership> information, etc.> deleted instance, with UUID, name, size, timestamp, ownership> information, etc.> > Maybe some of those values don't need to be reported in some cases, but> if you record a complete picture of the state of the instance then the> code that aggregates the event records to produce billing information> can use it to make decisions about how to record the charges.> > There is also the case where an instance is still no longer running but> nova thinks it is (or the reverse), so some sort of auditing sweep needs> to be included (I think that's what Dough called the "farmer" but I> don't have my notes in front of me).
>>>
>>>  When I wrote [1], one of the things that I never assumed was how agents
>>> would collect their information. I imagined that the system should allow
>>> for multiple implementation of agents that would collect the same
>>> counters, assuming that 2 implementations for the same counter should
>>> never be running at once.
>>>
>>> That said, I am not sure an event based collection of what nova is
>>> notifying would satisfy the requirements I have heard from many cloud
>>> providers:
>>> - how do we ensure that event are not forged or lost in the current nova
>>> system?
>>> - how can I be sure that an instance has not simply crashed and never
>>> started?
>>> - how can I collect information which is not captured by nova events?
>>>
>>> Hence the proposal to use a dedicated event queue for billing, allowing
>>> for agents to collect and eventually validate data from different
>>> sources, including, but not necessarily limiting, collection from the
>>> nova events.
>>>
>>> Moreover, as soon as you generalize the problem to other components than
>>> just Nova (swift, glance, quantum, daas, ...) just using the nova event
>>> queue is not an option anymore.
>>>
>>> [1] http://wiki.openstack.org/EfficientMetering
>>>
>>> Nick
>>>
>>>
>>>
>>>
>>>  On Apr 24, 2012, at 6:20 AM, Sandy Walsh wrote:
>>>
>>>
>>>  I think we have support for this currently in some fashion, Dragon?
>>>
>>> -S
>>>
>>>
>>>
>>> On 04/24/2012 12:55 AM, Loic Dachary wrote:
>>>
>>>  Metering needs to account for the "volume of data sent to external network destinations " ( i.e. n4 in http://wiki.openstack.org/EfficientMetering ) or the disk I/O etc. This kind of resource is billable.
>>>
>>> The information described at http://wiki.openstack.org/SystemUsageData will be used by metering but other data sources need to be harvested as well.
>>>
>>>  --
>>> 	Monsyne M. Dragon
>>> 	OpenStack/Nova
>>> 	cell 210-441-0965
>>> 	work x 5014190
>>>
>>>
>>> _______________________________________________
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>>>
>>>
>>> --
>>> Loïc Dachary         Chief Research Officer
>>> // eNovance labs   http://labs.enovance.com
>>> // ✉ loic@xxxxxxxxxxxx  ☎ +33 1 49 70 99 82
>>>
>>>  _______________________________________________
>>> Mailing list: https://launchpad.net/~openstack
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>>>
>>>   --
>>> Monsyne M. Dragon
>>> OpenStack/Nova
>>> cell 210-441-0965
>>> work x 5014190
>>>
>>>
>>>
>>> --
>>> Loïc Dachary         Chief Research Officer
>>> // eNovance labs   http://labs.enovance.com
>>> // ✉ loic@xxxxxxxxxxxx  ☎ +33 1 49 70 99 82
>>>
>>>
>>> _______________________________________________
>>> Mailing list: https://launchpad.net/~openstack
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>>> Unsubscribe : https://launchpad.net/~openstack
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>>>
>>>
>>
>>
>> --
>> -------------------------------------------
>> Luis Alberto Gervaso Martin
>> Woorea Solutions, S.L
>> CEO & CTO
>> mobile: (+34) 627983344
>> luis@ <luis.gervaso@xxxxxxxxx>woorea.es
>>
>>  _______________________________________________
>> Mailing list: https://launchpad.net/~openstack
>> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~openstack
>> More help   : https://help.launchpad.net/ListHelp
>>
>>
>>
>
>
> --
> -------------------------------------------
> Luis Alberto Gervaso Martin
> Woorea Solutions, S.L
> CEO & CTO
> mobile: (+34) 627983344
> luis@ <luis.gervaso@xxxxxxxxx>woorea.es
>
>
>


-- 
-------------------------------------------
Luis Alberto Gervaso Martin
Woorea Solutions, S.L
CEO & CTO
mobile: (+34) 627983344
luis@ <luis.gervaso@xxxxxxxxx>woorea.es