checking if the downloaded archive has changed.

playbooks/roles/elasticsearch/tasks/main.yml

@@ -34,11 +34,13 @@
     url={{ elasticsearch_url }}
     dest=/var/tmp/{{ elasticsearch_file }}
     force=no
+  register: elasticsearch_reinstall
 
 - name: install elasticsearch from local package
   shell: >
     dpkg -i  --force-confold /var/tmp/elasticsearch-{{ elasticsearch_version }}.deb
-    executable=/bin/bash 
+    executable=/bin/bash
+  when: elasticsearch_reinstall.changed
 
 - name: create directories
   file: >