What are your actors doing? Are you blocking somewhere?

It should “just work”.

Please upgrade to an actually maintained version too please - 2.3 is very
ancient,
please use the current release timeline 2.5 – there should be almost no
code changes you need to do btw, it’s compatible.

—
Konrad `kto.so` Malawski
Akka <http://akka.io> @ Lightbend <http://lightbend.com>

On 30 August 2017 at 18:47:40, Rodrigo Silva ([email protected])
wrote:


I'm using akka 2.3.14 and I set up to use Remote and Cluster features with
this basic set up:

    akka {
  actor {
    provider = "akka.cluster.ClusterActorRefProvider"
  }
  remote {
    netty.tcp {
      hostname = someIP
      port = SOMEPORT
    }
  }

  cluster {
    seed-nodes = [
      "akka.tcp://ClusterSystem@SOMEFIXEDIP:9191"]

    auto-down-unreachable-after = 120s
  }
}



I been able to start up to 40 nodes on the same machine (for testing
purposes). Same thing with 2 machines, and even with one or two virtual
machines.

The problem arises when I set up 8 virtual machines on a server, each
running one single node. There is no custom code being executed, I just
manage to start up an actor system and I see them getting connected each
other. After a while being idle, I start seeing things like this on a node:

[WARN] [08/24/2017 12:32:53.125] [ClusterSystem-akka.remote.default-remote-
dispatcher-6] 
[akka.tcp://ClusterSystem@vm-euler-04:7887/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40euler%3A9191-0]
Association with remote system [akka.tcp://ClusterSystem@euler:9191] has
failed, address is now gated for [5000] ms. Reason: [Disassociated]
[WARN] [08/24/2017 12:32:53.141] [ClusterSystem-akka.remote.default-remote-
dispatcher-5] 
[akka.tcp://ClusterSystem@vm-euler-04:7887/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40vm-euler-02%3A7887-2]
Association with remote system [akka.tcp://ClusterSystem@vm-euler-02:7887]
has failed, address is now gated for [5000] ms. Reason: [Disassociated]
[WARN] [08/24/2017 12:32:53.531] [ClusterSystem-akka.remote.default-remote-
dispatcher-5] 
[akka.tcp://ClusterSystem@vm-euler-04:7887/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40vm-euler-01%3A7887-3]
Association with remote system [akka.tcp://ClusterSystem@vm-euler-01:7887]
has failed, address is now gated for [5000] ms. Reason: [Disassociated]
...
[ERROR] [08/24/2017 12:33:00.078] [ClusterSystem-akka.remote.default-remote-
dispatcher-25] 
[akka.tcp://ClusterSystem@vm-euler-04:7887/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40vm-euler-03%3A7887-1/endpointWriter]
AssociationError [akka.tcp://ClusterSystem@vm-euler-04:7887] ->
[akka.tcp://ClusterSystem@vm-euler-03:7887]: Error [Invalid address:
akka.tcp://ClusterSystem@vm-euler-03:7887] [
akka.remote.InvalidAssociation: Invalid address: akka.tcp:
//ClusterSystem@vm-euler-03:7887
Caused by: akka.remote.transport.Transport$InvalidAssociationException:
The remote
system has quarantined this system. No further associations to the remote
system are possible until this system is restarted.
]



What puzzles me is, first, nodes gets connected at the very begging and
second, it start failing when 8 or more VM are created and launched. And
second, log information doesn't say much.

    Is there any way to get more information about what is going on
here?(log level, trace, dump...)
    Do I need special set up when it comes to use virtual machines? I mean,
starting up 40 nodes on the same cpu didn't got disconnected.

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