On Jun 18, 2015, at 3:04 PM, tigerfoot <gzo...@gmail.com
<javascript:>> wrote:
Actually that's not quite right...its not nearly that simple.
These "oceans" like Mesos need to auto-assign the ports so
while, yes, 2.4 gives dual binding capabilities this is only
useful when you know the ports!
So how do you do that? That's much more complex.
I've got a hello-world remote project in github that shows how
to do this on Amazon's container service ECS, using some
AWS-specific capabilities, namely to call an api from within a
running Docker to find the IP of the host its running on (not
the Docker-internal IP). From there other magic is possible. I
can successfully launch a bunch of Dockers into ECS and it will
figure out what's-what and bind to the dynamic ports ECS
assigns, and from there I can talk to them.
See here for info:
https://github.com/gzoller/docker-exp/tree/remoting
<https://github.com/gzoller/docker-exp/tree/remoting>
(NOTE: The clustering branch of this project is still in-work,
and will not function properly yet, but soon will using the same
principles. My expectations is that a cluster in an ocean will
need to use pub-sub or similar mechanism to identify actors
"somewhere" to talk to, but we'll see...)
You're going to have to adapt this for Mesos. If you so, shoot
a pull request to my project so I've got it. :-)
Remoting in oceans is ok, but I suspect what you're really
shooting for will be the clustering.... fire a bunch of nodes
wrapped in Dockers out there and have them self-detect and then
just talk to them w/o having to know where they are actually
running. I'm working on this now....
Greg
On Thursday, June 18, 2015 at 1:27:59 PM UTC-5, √ wrote:
Akka 2.4 solves the docker problem with supporting an
external address and one internal.
--
Cheers,
√
On 18 Jun 2015 19:28, "Jason Martens"
<m...@jasonmartens.com> wrote:
I have heard from another co-worker that Akka remoting
is very difficult on Mesos using Docker, because of the
random ports that it uses to connect. Docker expects you
to specify which ports are going to be used by your
container, and if you don't know ahead of time it can be
difficult to support. Keep that in mind when considering
deploying using a container.
Jason
On Wednesday, June 17, 2015 at 12:36:52 PM UTC-7, Brian
Topping wrote:
Hi all,
Just curious if anyone on the list has tried to
blend Akka and Mesos at a level that is more
granular than the JVM. For those that have heard
about it but don't know much about it's core, Mesos
is using kernel cgroups to provide ultra light
weight virtualization with very low overhead for
startup and shutdown as well as being able to
provide resource constraints to requesting entities.
In one view, it might not make sense to go more
granular than the JVM. After all, Mesos can't run
JVM classes without one. On the other hand, I'm
thinking it might be very useful to have a
standardized Akka container that would allow actor
distribution with consistent stream-oriented APIs
that took care of all the clustering concerns with
robust, well-established techniques. There's
certainly a lot that can be done here, for instance
with "warm nodes" that are pooled for usage spikes
and could reduce first transaction latency even
further with no change to semantics.
WDYT?
Brian
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