May 2023 - hawkular-dev - Jboss List Archives

by Daniel Glöckner

Hi, we're using WildFly 10.1.0 and we need more monitoring ;) I hope this is the right mailing list. The target picture is -InfluxDB as TSDB for archiving performance relevant measurements -Grafana for creating and sharing dashboards We'd like to use "standard" tools as much as possible. JMX is a mature standard and we'd like to use it for publishing the metrics. Using jmxtrans (https://github.com/jmxtrans/jmxtrans) we're able to get a lot of details about JVM and parts of WildFly. We're lacking visibility on -connection pools -thread pools -EJBs (remoting) -web services How could hawkular help here? I guess hawkular plugs into metrics which are (unfortunately) not available via JMX in WildFly? Can hawkular publish via JMX? Or write to InfluxDB? InfluxDB is not set into stone but is the preferred solution. Kind regards, Daniel

2 months, 1 week

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APM - lost requests ?

by Thomas Heute

How do we explain the drops in requests in the following example: http://www.hawkular.org/img/blog/2017/2017-02-13-teaser.png Shouldn't it always be the same load ? Do we know if it's an it's an issue in APM, or is it that the load balancing "lose" some requests as we scale down a server ? or else ? Thomas

2 months, 1 week

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Issues installing Hawkular Service and Alert

by Hassnan Khan

My name is Hassnan Khan and I work at Fandango in the NOC department. We use an ELK stack to process our logs into readable data that we see on Kibana (4.6.4) / ElasticSearch 2.4.x. We've been trying to get a standalone alerting system and haven't had much luck. I came across Hawkular Services + Alerts and thought this is something we could possibly use. Unfortunately, we haven't been able to install it successfully. We've tried all the installation guides on github + hawkular blogs and keep getting an error when trying to connect to Cassandra even though it is obviously running. Is there any tips you can give on successfully installing the suite?

2 months, 1 week

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hawkular-alerts integration with prometheus, elasticsearch, kafka

by John Mazzitelli

I wrote a blog to demo hAlerts and its integration with Prometheus, ElasticSearch, and Kafka, showing how we can fire alerts and notifications based on things happening with Prometheus metrics, ElasticSearch logs, and Kafka stream data. I need it reviewed and merged for it to be published: https://github.com/hawkular/hawkular.github.io/pull/334 The demo video is here: https://youtu.be/mM1mwJneKO4

2 months, 1 week

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"Getting Things Done" (David Allen) System: Artificer

by Brett Meyer

FWIW, I've been experimenting with Artificer as a "Getting Things Done" solution, mainly as a bit of dogfooding. However, it fits in surprisingly well. I'll be maintaining a demo that showcases a GTD ontology/classifier system, showing Artificer as not-just-another-artifact-repo, but also a powerful information and reference system. https://developer.jboss.org/en/artificer/blog/2015/03/31/getting-things-d...

2 months, 2 weeks

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Error connecting to Cassandra - com.datastax.driver.core.exceptions.InvalidQueryException

by Dhillon, Manjot

Hello, I am trying to start hawkular services, version hawkular-1.0.0.Alpha13-SNAPSHOT. As per the documentation, I am using Cassandra version 3.0.12. On starting the hawkular service, I see the following error - 33m01:58:08,209 WARN [org.hawkular.alerts.engine.impl.CassDefinitionsServiceImpl] (Thread-239 (ActiveMQ-client-global-threads-15127043)) Could not connect to Cassandra cluster - assuming is not up yet. Cause: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: apsrd6612.uhc.com/10.204.85.28:9042 (com.datastax.driver.core.exceptions.InvalidQueryException: unconfigured table schema_keyspaces)) The cassandra driver included with the hawkular service - cassandra-driver-core-2.2.0-rc3.jar, which may be causing the issue. Thanks, Manjot This e-mail, including attachments, may include confidential and/or proprietary information, and may be used only by the person or entity to which it is addressed. If the reader of this e-mail is not the intended recipient or his or her authorized agent, the reader is hereby notified that any dissemination, distribution or copying of this e-mail is prohibited. If you have received this e-mail in error, please notify the sender by replying to this message and delete this e-mail immediately.

2 months, 2 weeks

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logging in java agents is not trivial in WildFly / EAP

by Mark Ambrose

>>> ... this means problems still need to be overcome when >>> putting java agents in host controllers for EAP 7.0 domain mode. >>> </tl;dr> Is a solution to these problems for when putting java agents in host controllers for EAP 7.0 domain mode known? ... [Host Controller] 16:16:33,937 INFO [org.jboss.as.host.controller] (Controller Boot Thread) WFLYHC0023: Starting server TestServer1a 16:16:33,968 INFO [org.jboss.as.process.Server:TestServer1a.status] (ProcessController-threads - 3) WFLYPC0018: Starting process 'Server:TestServer1a' [Server:TestServer1a] Could not load Logmanager "org.jboss.logmanager.LogManager" [Server:TestServer1a] java.lang.ClassNotFoundException: org.jboss.logmanager.LogManager [Server:TestServer1a] at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ... Thanks, Mark Ambrose

3 months, 1 week

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[hawkular-alerts] Integration with Eureka

by Ashutosh Dhundhara

Hi All, Is it possible to track UP/DOWN status of micro-services registered with Eureka and fire email notifications if a service goes down? If yes, please point me to right direction. -- Regards, Ashutosh Dhundhara

11 months, 2 weeks

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hawkular-dev May 2023