enhancement: add service debug role to catch and display service errors

Signed-off-by: Christian Krause <christian.krause@idiv.de>

roles/blackbox_exporter/tasks/main.yml

@@ -41,3 +41,9 @@
     enabled: true
   tags:
     - blackbox_exporter_run
+
+- name: Display service errors
+  ansible.builtin.include_role:
+    name: service_debug
+  vars:
+    __service_name: blackbox_exporter

roles/service_debug/tasks/main.yml

@@ -0,0 +1,27 @@
+---
+
+- name: 'Run `systemctl status {{ __service_name }}`'
+  ansible.builtin.command: 'systemctl status {{ __service_name }}.service'
+  changed_when: false
+  failed_when: false
+  register: __service_status
+
+- name: 'Show `systemctl status` output for {{ __service_name }}'
+  ansible.builtin.debug:
+    var: __service_status.stdout_lines
+  changed_when: false
+  failed_when: false
+
+- name: 'Run `journalctl -x -u {{ __service_name }}`'
+  ansible.builtin.command: 'journalctl -x -u {{ __service_name }}.service'
+  changed_when: false
+  failed_when: false
+  register: __service_journal
+
+- name: 'Show `journalctl -x` output for {{ __service_name }}'
+  ansible.builtin.debug:
+    var: __service_journal.stdout_lines
+  changed_when: false
+  failed_when: false
+
+...

roles/smokeping_prober/tasks/main.yml

@@ -61,3 +61,9 @@
     - not ansible_check_mode
   tags:
     - smokeping_prober_run
+
+- name: Display service errors
+  ansible.builtin.include_role:
+    name: service_debug
+  vars:
+    __service_name: smokeping_prober