Fix for detecting es version changed

tasks/elasticsearch-plugins.yml

@@ -11,8 +11,9 @@
   when: es_version | version_compare('2.0', '<')
 
 #List currently installed plugins - ignore xpack if > v 2.0
-- shell: "{{es_home}}/bin/plugin {{list_command}} | sed -n '1!p' | cut -d '-' -f2-{% if es_version | version_compare('2.0', '>') %} | grep -vE '{{supported_xpack_features | join('|')}}'{% endif %}"
+- shell: "{{es_home}}/bin/plugin {{list_command}} | sed -n '1!p' | cut -d '-' -f2-{% if es_version | version_compare('2.0', '>') %} | grep -vE '{{supported_xpack_features | join('|')}}|license'{% endif %}"
   register: installed_plugins
+  failed_when: "'ERROR' in installed_plugins.stdout"
   changed_when: False
   ignore_errors: yes
   environment:

tasks/xpack/elasticsearch-xpack-install.yml

@@ -1,7 +1,5 @@
 ---
 
-- set_fact: es_version_changed=((elasticsearch_install_from_package is defined and elasticsearch_install_from_repo.changed) or (elasticsearch_install_from_package is defined and elasticsearch_install_from_package.changed))
-
 #Test if feature is installed
 - shell: "{{es_home}}/bin/plugin list | sed -n '1!p' | grep {{item}}"
   register: feature_installed

tasks/xpack/elasticsearch-xpack.yml

@@ -1,8 +1,10 @@
 ---
 
-- set_fact: es_version_changed=((elasticsearch_install_from_package is defined and elasticsearch_install_from_repo.changed) or (elasticsearch_install_from_package is defined and elasticsearch_install_from_package.changed))
+- set_fact: es_version_changed={{((elasticsearch_install_from_package is defined and elasticsearch_install_from_repo.changed) or (elasticsearch_install_from_package is defined and elasticsearch_install_from_package.changed))}}
 
-#enabling xpack installs the license. Not a xpack feature and does not need to be specified
+
+- debug: msg="{{es_version_changed}}"
+#enabling xpack installs the license. Not a xpack feature and does not need to be specified - TODO: we should append it to the list if xpack is enabled and remove this
 
 #Check if license is installed
 - name: Check License is installed
@@ -10,6 +12,7 @@
     {{es_home}}/bin/plugin list | tail -n +2 | grep license
   register: license_installed
   ignore_errors: yes
+  failed_when: "'ERROR' in license_installed.stdout"
   changed_when: False
   environment:
     CONF_DIR: "{{ conf_dir }}"
@@ -41,7 +44,7 @@
     CONF_DIR: "{{ conf_dir }}"
     ES_INCLUDE: "{{ instance_default_file }}"
 
-#We loop on all as we may need to remove some features
+#We loop on all as we may need to remove some features.
 - include: elasticsearch-xpack-install.yml
   with_items: "{{supported_xpack_features}}"