enhancement(node_exporter): use systemd to create node_exporter_textf…

…ile_dir if it

doesn't exist

roles/node_exporter/tasks/preflight.yml

@@ -20,6 +20,16 @@
   ansible.builtin.package_facts:
   when: "not 'packages' in ansible_facts"
 
+- name: Get systemd version
+  ansible.builtin.command: systemctl --version
+  changed_when: false
+  check_mode: false
+  register: __systemd_version
+
+- name: Set systemd version fact
+  ansible.builtin.set_fact:
+    node_exporter_systemd_version: "{{ __systemd_version.stdout_lines[0].split(' ')[1] }}"
+
 - name: Assert that used version supports listen address type
   ansible.builtin.assert:
     that:

roles/node_exporter/templates/node_exporter.service.j2

@@ -8,6 +8,16 @@ After=network-online.target
 Type=simple
 User={{ node_exporter_system_user }}
 Group={{ node_exporter_system_group }}
+{% if node_exporter_textfile_dir | length > 0 %}
+{% if node_exporter_systemd_version | int >= 235 %}
+ExecStartPre=+/bin/mkdir -p {{ node_exporter_textfile_dir }}
+ExecStartPre=+/bin/chown -R {{ node_exporter_system_user }}:{{ node_exporter_system_group }} {{ node_exporter_textfile_dir }}
+{% else %}
+ExecStartPre=/bin/mkdir -p {{ node_exporter_textfile_dir }}
+ExecStartPre=/bin/chown -R {{ node_exporter_system_user }}:{{ node_exporter_system_group }} {{ node_exporter_textfile_dir }}
+PermissionsStartOnly=true
+{% endif %}
+{% endif %}
 ExecStart={{ node_exporter_binary_install_dir }}/node_exporter \
 {% for collector in node_exporter_enabled_collectors -%}
 {%   if not collector is mapping %}