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Posted to dev@brooklyn.apache.org by Duncan Grant <du...@cloudsoftcorp.com> on 2015/07/08 17:55:47 UTC

Can DynamicCluster have a SameServerEntity as its memberspec?

I'd like to have a dynamic cluster whose members are implemented by a same
server entity.

I tried the following yaml:
name: Empty large System
location: jclouds:aws-ec2:eu-west-1
services:
- type: brooklyn.entity.group.DynamicCluster
  initialSize: 5
  memberSpec:
    $brooklyn:entitySpec:
      type: brooklyn.entity.basic.SameServerEntity
      brooklyn.children:
      - type: brooklyn.entity.basic.EmptySoftwareProcess

and it failed with the error:
Error invoking start at DynamicClusterImpl{id=RNXdFmCp}: On start of
cluster DynamicClusterImpl{id=RNXdFmCp}, failed to get to initial size of
5; size is 1: Spec EntitySpec{type=interface
brooklyn.entity.basic.EmptySoftwareProcess} has parent
SameServerEntityImpl{id=n1mItGo8} defined, but it is defined as a child of
SameServerEntityImpl{id=zUgW3VqH}

If I set initialSize to 1 it seems happy until I try to resize the cluster
and then it fails with the same error.

thanks

Duncan

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