Use the Katacoda hands on learning to review the directory structure and config examples https://academy.lucidworks.com/fusion-architecture/526426
customize_fusion_values.sh script uses the helm chart, cloud provider and config yaml file (see customize_fusion_values.yaml.example) to spin up the cluster.
By default, --num-solr instances and ZK_REPLICAS are set to 3
This is the file being run that controls the components