One way to deploy Elasticsearch cluster of OSS flavour with helmfile.
├── elasticsearch-helmfile
│ ├── config
│ │ └── releases
│ │ ├── elasticsearch-client
│ │ │ └── values.yaml.gotmpl
│ │ ├── elasticsearch-data
│ │ │ └── values.yaml.gotmpl
│ │ └── elasticsearch-master
│ │ └── values.yaml.gotmpl
│ ├── templates
│ │ └── release.yaml
│ └── values
│ └── common.yaml
└── helmfile.yaml