Update to 2021-12-01 19:13

roles/elasticsearch/templates/elasticsearch.yml.j2

@@ -0,0 +1,11 @@
+cluster.name: {{ es_cluster_name }}
+network.host: 0.0.0.0
+http.port: {{ es_port }}
+node.name: {{ es_node_name }}
+path.data: {{ es_data_dir }}
+path.logs: /var/log/elasticsearch
+path.repo: [ {{ es_backup_dir }} ]
+action.auto_create_index: false
+{% if es_major_version is defined and es_major_version is version('7','>=') %}
+discovery.type: single-node
+{% endif %}