elasticsearch: add http.publish_host variable

CHANGELOG.md

@@ -12,6 +12,7 @@ The **patch** part changes incrementally at each release.
 
 ### Added
 * elasticsearch: tmpdir configuration compatible with 5.x also
+* elasticsearch: add http.publish_host variable
 
 ### Changed
 

elasticsearch/README.md

@@ -17,7 +17,8 @@ Tasks are extracted in several files, included in `tasks/main.yml` :
 * `elasticsearch_cluster_name`: cluster name ;
 * `elasticsearch_node_name`: node name, defaults to hostname ;
 * `elasticsearch_network_host`: which interfaces to bind to ;
-* `elasticsearch_network_publish_host`: which interface to publish ;
+* `elasticsearch_network_publish_host`: which interface to publish for node-to-node communication (default: `Null`) ;
+* `elasticsearch_http_publish_host`: which interface to publish for clients (default: `Null`) ;
 * `elasticsearch_custom_datadir`: custom datadir ;
 * `elasticsearch_custom_tmpdir`: custom tmpdir ;
 * `elasticsearch_jvm_xms`: mininum heap size reserved for the JVM (default: `2g`).

elasticsearch/defaults/main.yml

@@ -4,7 +4,8 @@ elastic_stack_version: "6.x"
 elasticsearch_cluster_name: Null
 elasticsearch_node_name: "${HOSTNAME}"
 elasticsearch_network_host: "[_site_, _local_]"
-elasticsearch_network_publish_host: "_site_"
+elasticsearch_network_publish_host: Null
+elasticsearch_http_publish_host: Null
 elasticsearch_custom_datadir: Null
 elasticsearch_custom_tmpdir: Null
 elasticsearch_default_tmpdir: /var/lib/elasticsearch/tmp

elasticsearch/tasks/configuration.yml

@@ -39,6 +39,16 @@
   tags:
     - config
 
+- name: Configure http publish_host
+  lineinfile:
+    dest: /etc/elasticsearch/elasticsearch.yml
+    line: "http.publish_host: {{ elasticsearch_http_publish_host }}"
+    regexp: "^http.publish_host:"
+    insertafter: "^http.port:"
+  when: elasticsearch_http_publish_host|default("", True)
+  tags:
+    - config
+
 - name: Configure RESTART_ON_UPGRADE
   lineinfile:
     dest: /etc/default/elasticsearch