Allow systemd unit file overrides

Author: dgoodellrhy

defaults/main.yml

@@ -16,6 +16,7 @@ tomcat_group: tomcat
 tomcat_allow_user_restart: false
 tomcat_umask: '0022'
 tomcat_add_user_to_group: false
+tomcat_unit_file_overrides: []
 
 # This will be randomly generated every ansible run if not set
 tomcat_shutdown_value: 'SETME'

tasks/install_repo.yml

@@ -4,4 +4,30 @@
   package: 
     name: "{{ tomcat_packages }}"
     state: present
+  tags: ['tomcat']
+
+- name: Create unit file override directory if configured
+  file:
+    path: "/etc/systemd/system/{{ tomcat_service }}.service.d/"
+    state: directory
+    owner: root
+    group: root
+    mode: '0755'
+  tags: ['tomcat']
+  
+- name: Place unit file overrides if configured
+  template:
+    src: etc.systemd.system.tomcat9.service.d.overrides.conf
+    dest: "/etc/systemd/system/{{ tomcat_service }}.service.d/overrides.conf"
+    owner: root
+    group: root
+    mode: '0644'
+  when: tomcat_unit_file_overrides|length > 0
+  register: override
+  tags: ['tomcat']
+
+- name: Reload systemd daemon
+  systemd_service:
+    daemon_reload: true
+  when: override.changed
   tags: ['tomcat']

templates/etc.systemd.system.tomcat9.service.d.overrides.conf

@@ -0,0 +1,4 @@
+[Service]
+{% for override in tomcat_unit_file_overrides|default([]) %}
+{{ override }}
+{% endfor %}