tosca_definitions_version: tosca_simple_yaml_1_3 metadata: template_author: cloudsoft template_name: tomcat-cluster template_version: 0.1.0-SNAPSHOT topology_template: node_templates: cluster: type: tosca.entity.DynamicCluster properties: cluster.initial.size: 1 dynamiccluster.memberspec: $brooklyn:entitySpec: name: Tomcat Member type: io.cloudsoft.tomcat-member groups: - add_brooklyn_types: members: [ cluster ] type: brooklyn.tosca.groups.initializer properties: brooklyn.enrichers: - type: org.apache.brooklyn.enricher.stock.Aggregator brooklyn.config: enricher.sourceSensor: $brooklyn:sensor("reqs_per_sec") enricher.targetSensor: $brooklyn:sensor("request.per_sec.mean") enricher.aggregating.fromMembers: true transformation: average # do not put enricher. in front of it!!! brooklyn.policies: - type: org.apache.brooklyn.policy.autoscaling.AutoScalerPolicy brooklyn.config: autoscaler.metric: $brooklyn:sensor("request.per_sec.mean") autoscaler.metricLowerBound: 5 autoscaler.metricUpperBound: 10 autoscaler.minPoolSize: 1 autoscaler.maxPoolSize: 3 - type: org.apache.brooklyn.policy.ha.ServiceReplacer - add_brooklyn_types: members: [ tomcat-cluster ] type: brooklyn.tosca.groups.initializer properties: location: - tosca.default.location