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New collectors in Apache Karaf Decanter 2.4.0

Apache Karaf Decanter 2.4.0 will be released soon and include a set of new collectors. Oshi Collector The oshi collector harvest a bunch of data about the hardware and the operating system. It’s a scheduled collector, executed periodically…

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Apache Karaf Decanter 2.4.0, new processing layer

Up to Apache Karaf Decanter 2.3.0, the collection workflow was pretty simple: collect and append. In Karaf Decanter 2.4.0, we introduced a new optional layer in between: the processing. It means that the workflow can be now collect,…

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Apache CXF metrics with Apache Karaf Decanter

Recently, I had the question several times: how can I have metrics (number of requests, request time, …) of the SOAP and REST services deployed in Apache Karaf or Apache Unomi (also running on Karaf). SOAP and REST…

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Apache Karaf Decanter 2.3.0, new Prometheus appender

As said in my previous post, Apache Karaf Decanter 2.3.0 is a major new release bringing fixes, improvements and new features. We saw the new alerting service. In this blog post, we see another new feature: the Prometheus…

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Apache Karaf Decanter 2.3.0, the new alerting service

Apache Karaf Decanter 2.3.0 will be released soon. This release brings lot of fixes, improvements and new features. In this blog post, we will focus on one major refactoring done in this version: the alerting service. Goodbye checker,…

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Apache ActiveMQ 5.15.12 performance improvement on JDBC persistence adapter

Some weeks ago, I identified a performance issue on ActiveMQ (affecting up to 5.15.11 release) when using PostgreSQL as JDBC persistence adapter. For instance, JDBC persistence adapter is an alternative to KahaBD and configured in activemq.xml as follow:…

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Introducing Apache Karaf Cave 4.2.x

Apache Karaf Cave 4.2.1 has been released this month. It’s a complete refactoring of Karaf Cave, providing cleaner, faster and new features, focusing on repositories. Let’s take a quick tour of the new Karaf Cave ! Cave Repositories,…

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Using Apache Karaf with Kubernetes

In a previous blog post (http://blog.nanthrax.net/?p=893), I introduced the “new” docker support in Karaf and the use of Karaf static distribution. This post follows the previous one by illustrating how to use Karaf docker image with a Kubernetes…

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ActiveMQ HTTP transport connector load balanced with HAProxy

If you are using ActiveMQ, you probably use the default tcp transport connector configured in the conf/activemq.xml: ActiveMQ also provides other transport connectors for some particular protocols (amqp, mqtt, stomp) or particular transports. Especially, it supports a very…

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Apache Karaf dynamic and static approach, docker and kubernetes

Most of the Karaf users know the Apache Karaf “standard” distribution. Apache Karaf dynamic approach (“standard” distribution) You can download Apache Karaf “standard” or “minimal” distributions, you download a “dynamic” distribution. By “dynamic”, it means that you start…

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