Hawkular-113
by Jay Shaughnessy
Just a note about a workaround pushed to master for
https://issues.jboss.org/browse/HAWKULAR-113. The root cause may or
may not be the same as for HWKMETRICS-47, it's not clear, but the
behavior is similar. After a lot of research we can see that invoking
concurrent, asynchronous EJB methods, that perform rest posts to
metrics, can hang the threads in WFly 8.2 (used by Kettle).
So, beware the @Asynchronous annotation on pooled EJBs, if the method is
performing posts. With no obvious fix, the only choice I could see was
to workaround the issue, and make the method synchronous.
This was the issue where if you were to add multiple urls to Hawkular,
you would quickly end up with all URLs reporting DOWN and basically the
application was locked up, with a bunch of hanging threads.
Jay
9 years, 8 months
Hawkular Metrics - REST API Remake
by Stefan Negrea
The following meeting has been modified:
Subject: Hawkular Metrics - REST API Remake
Organizer: "Stefan Negrea" <snegrea(a)redhat.com>
Location: Conf - 398-055-2127 & BlueJeans
Time: Monday, April 13, 2015, 9:00:00 AM - 10:00:00 AM GMT -06:00 US/Canada Central
Invitees: jsanda(a)redhat.com; hawkular-dev(a)lists.jboss.org; lclayton(a)redhat.com; tsegismo(a)redhat.com
*~*~*~*~*~*~*~*~*~*
Hello Everybody,
I would like to schedule a meeting to discuss a proposal for changes to Hawkular Metrics REST API. The agenda also includes recent proposals from the channel and mailing list around tags and raw vs aggregated metrics from an end-point perspective.
Here is a preliminary simple spreadsheet for this remake:
https://docs.google.com/a/redhat.com/spreadsheets/d/1CQBfAenNlWbQENoK_Rms...
Etherpad:
http://jbosson.etherpad.corp.redhat.com/250
Thank you,
Stefan
9 years, 8 months
UX Meeting today - CANCELED
by Catherine Robson
Hi all -
Due to the REST API meeting and some other conflicts, we'd like to
cancel the UX meeting today. Let's plan to reconnect Thursday. Feel
free to reach out if you need anything in the meantime.
- Catherine
--
Catherine Robson
User Experience Design
Red Hat JBoss Middleware
c: 978-944-3825
9 years, 8 months
updated design doc for computing aggregate metrics
by John Sanda
I have updated update the design doc[1] for aggregate metrics to include a brief summary of a few different approaches in terms of overall architecture. I have also included details on how work can be distributed and coordinated among instances of hawkular-metrics. The changes I am proposing will also have an impact on the REST API as has been discussed in some other recent threads. Thanks in advance for any feedback.
[1] http://bit.ly/1BAfF8d
- John
9 years, 8 months
hawkular monitor agent now sending avail to h-metrics rest
by John Mazzitelli
I have the hawkular monitor agent sending avail data successfully to h-metrics over its REST interface. I cannot get the bus message to flow successfully - I'm sure the JSON just isn't right (getting a NPE on the consumer end). Have I mentioned we need some strongly-typed Java client API jars? :)
To see it work, build hawkular-agent repo: https://github.com/hawkular/hawkular-agent and install the subsystem in a wildfly instance. I have been installing it directly into a kettle instance like this:
mvn -Dorg.hawkular.wildfly.home=/source/hawkular/kettle/target/wildfly-8.2.0.Final/ clean install wildfly-extension:deploy
You define what metrics to collect and what availability to check via standalone.xml config of the agent subsystem. See this file as an example:
https://github.com/hawkular/hawkular-agent/blob/master/hawkular-wildfly-m...
Next up, integrating JMX metrics/avail. (well, I guess I should get the avail bus message working first - anyone that can tell me what the avail bus message should look like, fill me in please).
9 years, 8 months
Ways to Test Availability Down?
by mike thompson
I guess this question is mainly targeted to Hawkular QE. So all of my testing (especially on a dev box) shows availability 100% (as most sites will). So while I can mock this in code to show downtime and unknown. It appears that we need a consistent way to demonstrate up/down/unknown/whatever else. Is there a QE way to do this currently?
I’m thinking a mock site that changes states every 5 or 10 minutes that is publicly available. This way we could all link our integration tests to this site to provide full coverage of states(and there could be other availability states like I have mentioned in other Hawkular ML mails).
The use case I want to add is as a developer I want to test all availability states within a half hour (or whatever timeframe, but as everything waits on tests passing less is better) by pulling in certain site(s).
Ideas?
— Mike T
9 years, 8 months
hawkular metrics avail API
by John Mazzitelli
Can someone point me to some code that stores availability data into hawkular metrics via REST and/or bus?
The hawkular monitor agent is in a state where I can finally add this code and get it to start storing avail data (its already doing metrics).
Once I get that done, I'm off to implement JMX/Jolokia metrics/avail collection and storage.
9 years, 8 months
Re: [Hawkular-dev] Hawkular Metrics - REST API Remake
by Thomas Segismont
I'll have to drop at 16h25.
----- Mail original -----
> The following is a new meeting request:
> Subject: Hawkular Metrics - REST API Remake
> Organizer: "Stefan Negrea" <snegrea(a)redhat.com>
> Location: Conf - 398-055-2127 & BlueJeans
> Time: Monday, April 13, 2015, 9:00:00 AM - 10:00:00 AM GMT -06:00 US/Canada
> Central
> Invitees: jsanda(a)redhat.com; hawkular-dev(a)lists.jboss.org
> *~*~*~*~*~*~*~*~*~*
> Hello Everybody,
> I would like to schedule a meeting to discuss a proposal for changes to
> Hawkular Metrics REST API. The agenda also includes recent proposals from
> the channel and mailing list around tags and raw vs aggregated metrics from
> an end-point perspective.
> Here is a preliminary simple spreadsheet for this remake:
> https://docs.google.com/a/redhat.com/spreadsheets/d/1CQBfAenNlWbQENoK_Rms...
> Thank you,
> Stefan
9 years, 8 months
Hawkular Metrics - Aggregate Numeric Metrics
by Stefan Negrea
The following is a new meeting request:
Subject: Hawkular Metrics - Aggregate Numeric Metrics
Organizer: "Stefan Negrea" <snegrea(a)redhat.com>
Location: Conf - 398-055-2127 & BlueJeans
Time: Monday, April 20, 2015, 9:00:00 AM - 10:00:00 AM GMT -06:00 US/Canada Central
Invitees: jsanda(a)redhat.com; hawkular-dev(a)lists.jboss.org
*~*~*~*~*~*~*~*~*~*
Hello Everybody,
I would like to schedule a review meeting for the architecture & design of aggregate numeric metrics for Hawkular Metrics. John Sanda created a very detailed document that will serve as basis for the meeting.
Here is the document:
https://docs.google.com/a/redhat.com/document/d/1vQkj_rR_wUHwGnalDij8XXGK...
Thank you,
Stefan
9 years, 8 months
