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From Denis Magda <dma...@apache.org>
Subject Re: Suggestion about Docker Swarm Services and Scaling Ignite automatically
Date Mon, 07 May 2018 16:32:43 GMT
Hi Jonathan,

Does Docker Swarm go with any internal services concept that can be used to
share Ignite nodes' IPs? Any other internal thing that can store and share
the IPs?

For instance, Ignite Kubernetes IP finder relies on K8 services to exchange
the IPs on the nodes startup:


On Sun, May 6, 2018 at 11:44 AM, Jonathan Schoreels <
jonathan.schoreels@gmail.com> wrote:

> Hello everyone,
> As adviced by @dsetrakyan, I would like to post one simple suggestion about
> Ignite and deployment, in particular container one's like docker. Docker
> Swarm allows to simply scale a service by setting the "replicas" parameter
> to a positive Integer. However, for lot of clustered applications, this
> isn't often well supported.
> For example, in this discussion
> https://stackoverflow.com/questions/48261239/running-
> ignite-on-swarm-cluster,
> we can see that Multicast isn't allowed in an overlay network in Docker,
> which is confirmed here : https://github.com/docker/libnetwork/issues/552.
> In the end, it looks like a limitations of Docker more than a limitation of
> ignite. However, I'm still posting this in cases of you have ideas on how
> to
> workaround this, or even implements an autodiscovery between ignite nodes
> with this limitation. The only solution found right now is to define a a
> single "ignite-master" service and a set of replicas in "ignite" services,
> which would point to this ignite-master. But we have a single point of
> failure for deployment.
> Any ideas, suggestions, or even better, support for docker services ?
> Thank you,
> Jonathan
> --
> Sent from: http://apache-ignite-developers.2346864.n4.nabble.com/

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