thredds: install the configuration files only at initialization time (or when a specific file does not exist). Needed because the same file will be changed programmatically.

thredds/tasks/main.yml

@@ -17,12 +17,23 @@
       file: path={{ thredds_data_content_dir }} state=directory owner={{ item.user }} group={{ item.user }}
       with_items: '{{ tomcat_m_instances }}'
 
+    - name: Check if the configuration files were already initialized with our versions
+      stat: path={{ thredds_data_content_dir }}/thredds/.conf_initialized
+      register: thredds_skip_conf
+      tags: [ 'thredds', 'tomcat', 'thredds_conf' ]
+
     - name: Install the Thredds configuration files
-      template: src={{ item }}.j2 dest={{ thredds_data_content_dir }}/thredds/{{ item }} mode=444
+      template: src={{ item }}.j2 dest={{ thredds_data_content_dir }}/thredds/{{ item }} owner={{ item.user }} group={{ item.user }} mode=644
       with_items:
         - threddsConfig.xml
         - catalog.xml
       notify: tomcat instances restart
+      when: not thredds_skip_conf.stat.exists
+      tags: [ 'thredds', 'tomcat', 'thredds_conf' ]
+
+    - name: Create the file that states that the thredds instance has been configured
+      copy: content="initialized by ansible" dest={{ thredds_data_content_dir }}/thredds/.conf_initialized mode=0400
+      register: thredds_skip_conf
       tags: [ 'thredds', 'tomcat', 'thredds_conf' ]
 
     - name: Get the thredds war file