Hi Klaus,
it might not look neat, but having only one binary that's getting installed
to all nodes of the cluster is a very practical simplification of both
development and operation side of things. You have a single build
definition, an you can't mix up binaries at deployment time, because
there's only one :)
You can set up your application to set an instance's cluster role using an
environment variable (eg. put akka.cluster.roles = [${CLUSTER_ROLE}] in
your application.conf) and check it using Cluster.getSelfRoles at runtime
and adjust instance behavior appropriately,
If you then use a cluster manager like Kubernetes, Mesos or Docker Swarm
you can use this environment variable to create pod/service definitions for
each of the roles and scale them horizontally as needed.
Cheers,
Rafał
W dniu wtorek, 14 lutego 2017 17:01:08 UTC+1 użytkownik
[email protected] napisał:
>
> I'm trying to make a cluster with one manager and multiple workers. As a
> greenhorn in akka clusters I first googled around. I've found plenty of
> examples for clusters running on a single JVM, which to me, is an antinomy.
> And I've found a handful of examples running on different JVMs on the same
> node. Thats already something, but only half of the story: these examples
> simply copied or used ALL of the cluster code to all JVMs and started the
> actor systems with all the worker AND manager code in the classpath. But
> that's ugly and not what I want. I'd like to nicely separate the code
> dedicated to the manager form the code dedicated to the workers (and
> possibly the common code). I don't like manager code on the worker nodes or
> worker code on the manager nodes (actor systems).
>
> I succeeded to do this with remoting (sending a string message to a remote
> actor (system)). I'd like to do this in a cluster. I'd like to keep it as
> simple as possible (no special routing policy necessary, actors may join
> manually, ...)
>
> Can you please help me to overcome my stupidity?
>
> Klaus W,
>
>
>
--
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
---
You received this message because you are subscribed to the Google Groups "Akka
User List" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/akka-user.
For more options, visit https://groups.google.com/d/optout.
