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Re: [artemis] Dynamically add cluster connection using JMX/Jolokia?


This definitely belongs to Dev.

I want to get more involved with Kubernetes. I am setting time apart
into this for upcoming weeks. Right now I don't have much information
to help you.. but please keep us informed of your discoveries :)

On Thu, Jun 7, 2018 at 2:53 AM, Victor <victor.romero@xxxxxxxxx> wrote:
> Hi all,
>
> I'm having some fun trying to figure out the ideal way to deploy an
> ActiveMQ Artemis cluster in Kubernetes.
>
> I started by creating a Helm Chart (think of it as a deb/rpm package for
> Kubernetes) where I can just install a Symmetric cluster of 8 nodes with
> the following commands:
>
>   helm repo add activemq-artemis https://vromero.github.io/
> activemq-artemis-helm/
>   helm install vromero/activemq-artemis --set replicas=8
>
> It works pretty well but I'm creating static-connectors for the cluster
> connection at the install time. Meaning that if later the user wants to
> scale up or down his cluster it won't work.
>
> I have been exploring these two ideas to overcome it:
>
> - ActiveMQ Artemis Plugin to enable auto-discover by connecting to the
> Artemis to the Kubernetes api
> - To have an external minimal agent written in Go (given that it has the
> best client library for k8s and it has a very small binary / memory
> footprint) that connects to k8s and let know Artemis from the outside which
> other nodes are available for the cluster.
>
> After a quick look at the first option, the one of the plugin, I decided to
> keep it as plan B given that a hypothetically big cluster might end up
> pounding too hard the Kubernetes API and especially given that the
> Kubernetes client would bring a not too big but neither too small number of
> transitive dependencies to Artemis.
>
> So off I went with the external agent to now realize that at least at a
> quick glance at the JMX/Jolokia API I see no method to add new
> cluster-connections. So my question would be:
>
> Is there any way to add externally cluster-connections to Artemis?
>
> I'm hoping that this belongs to the dev list as it is kind-of advanced if
> it actually belongs to user I apologise
>
> Thanks



-- 
Clebert Suconic