Defines the topology of the Kibana nodes (eg number/capacity of nodes, and where they can be allocated)
- Controls the allocation strategy of this node type using a simplified version of the Elasticsearch filter DSL (together with 'node_configuration')
- The memory capacity in MB for each node of this type built in each zone
- Controls the allocation and configuration override strategy of this node type (together with 'allocator_filter') by pointing to the names of pre-registered node configurations.
- The number of nodes of this type that are allocated within each zone