Re: [openstack-dev] [Monasca] Alarm generation from a sequence of events

2016-02-16 Thread Pradip Mukhopadhyay
Thanks, Roland. Makes sense. I agree.


Just tossing the idea: is there a way to validate a temporal causal
relationship among events such that in case e1, followed by e2, followed by
e3 *implies *a condition C to fail/pass - and generates an alarm.


Thanks,
Pradip



On Tue, Feb 16, 2016 at 8:52 PM, Hochmuth, Roland M <roland.hochm...@hpe.com
> wrote:

> Hi Pradip, The focus of that blueprint is to create metrics from logs in
> the LogStash component and then publish them to the Kafka metrics topic.
> The Monasca Threshold Engine can then be used to alarm on the metrics. For
> example, if the number of errors in a log file exceeds some amount, alarm
> and send a notification.
>
> Regards --Roland
>
> From: Pradip Mukhopadhyay <pradip.inte...@gmail.com pradip.inte...@gmail.com>>
> Reply-To: OpenStack List <openstack-dev@lists.openstack.org openstack-dev@lists.openstack.org>>
> Date: Monday, February 15, 2016 at 9:58 AM
> To: OpenStack List <openstack-dev@lists.openstack.org openstack-dev@lists.openstack.org>>
> Subject: [openstack-dev] [Monasca] Alarm generation from a sequence of
> events
>
> Hello,
>
>
> We come across the following interesting BP in the last weekly meeting:
> https://blueprints.launchpad.net/monasca/+spec/alarmsonlogs
>
>
> Understood how the non-periodic nature of log events to be taken care of
> (by introducing period = -1 in value-meta).
>
>
> Just wondering can it be possible to use this to satisfy the following
> usecase:
> Given a causal or non-causal sequence of events a, b, c – can we determine
> that a condition ‘p’ has occurred and alarm on that.
>
>
>
> Thanks,
> Pradip
>
>
>
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Re: [openstack-dev] [Monasca] Alarm generation from a sequence of events

2016-02-16 Thread Hochmuth, Roland M
Hi Pradip, The focus of that blueprint is to create metrics from logs in the 
LogStash component and then publish them to the Kafka metrics topic. The 
Monasca Threshold Engine can then be used to alarm on the metrics. For example, 
if the number of errors in a log file exceeds some amount, alarm and send a 
notification.

Regards --Roland

From: Pradip Mukhopadhyay 
<pradip.inte...@gmail.com<mailto:pradip.inte...@gmail.com>>
Reply-To: OpenStack List 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Date: Monday, February 15, 2016 at 9:58 AM
To: OpenStack List 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: [openstack-dev] [Monasca] Alarm generation from a sequence of events

Hello,


We come across the following interesting BP in the last weekly meeting: 
https://blueprints.launchpad.net/monasca/+spec/alarmsonlogs


Understood how the non-periodic nature of log events to be taken care of (by 
introducing period = -1 in value-meta).


Just wondering can it be possible to use this to satisfy the following usecase:
Given a causal or non-causal sequence of events a, b, c – can we determine that 
a condition ‘p’ has occurred and alarm on that.



Thanks,
Pradip



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