Configure other nodes to join this cluster:

• On this node:

  ⁃ Create an enrollment token with `bin/elasticsearch-create-enrollment-token -s node`.

  ⁃ Uncomment the transport.host setting at the end of config/elasticsearch.yml.

  ⁃ Restart Elasticsearch.

• On other nodes:

  ⁃ Start Elasticsearch with `bin/elasticsearch –enrollment-token <token>`, using the enrollment token that you generated.