Optimized alarm and system handlers

roles/sys-ctl-alm-email/tasks/01_core.yml

@@ -6,5 +6,7 @@
 
 - include_role:
     name: sys-service
-
+  vars:
-
+    # If the email notifier fails, trigger the Telegram notifier,
+    # passing the failing unit's name as the instance text.
+    system_service_tpl_on_failure: "{{ ('sys-ctl-alm-telegram@') | get_service_name(SOFTWARE_NAME, False) }}%n.service"

roles/sys-ctl-alm-telegram/tasks/01_core.yml

@@ -12,6 +12,10 @@
 
 - include_role:
     name: sys-service
+  vars:
+    # If the Telegram notifier fails, trigger the Email notifier,
+    # passing the failing unit's name as the instance text.
+    system_service_tpl_on_failure: "{{ ('sys-ctl-alm-email@') | get_service_name(SOFTWARE_NAME, False) }}%n.service"
 
 - name: install curl
   community.general.pacman:

roles/sys-ctl-alm-telegram/templates/script.sh.j2

@@ -15,4 +15,4 @@ fi
 /usr/bin/curl -s -X POST \
   "https://api.telegram.org/bot{{ telegram_bot_token }}/sendMessage" \
   -d chat_id="{{ telegram_chat_id }}" \
-  --data-urlencode text="service ${friendly} on ${host} failed"
+  --data-urlencode text="service ${friendly//\//-} on ${host} failed"

roles/sys-service/defaults/main.yml

@@ -1,3 +1,3 @@
-SYS_SERVICE_ALL_ENABLED:      "{{ not MODE_DEBUG }}"
+SYS_SERVICE_ALL_ENABLED:      "{{ MODE_DEBUG }}"
 SYS_SERVICE_DEFAULT_STATE:    "{{ 'restarted' if MODE_DEBUG else omit }}"
 SYS_SERVICE_DEFAULT_RUNTIME:  "86400s"    # Maximum total runtime a service is allowed to run before being stopped

roles/sys-service/tasks/05_service.yml

@@ -42,3 +42,4 @@
     notify: refresh systemctl service
     when: not system_service_uses_at
   when: SYS_SERVICE_ALL_ENABLED | bool
+

roles/sys-service/tasks/main.yml

@@ -1,3 +1,9 @@
+- name: "Reload sys-daemon handlers"
+  include_tasks: "{{ playbook_dir }}/tasks/utils/load_handlers.yml"
+  vars:
+    handler_role_name: "sys-daemon"
+  when: run_once_sys_service is defined
+
 - block:
   - include_tasks: 01_core.yml
   - include_tasks: utils/run_once.yml
@@ -7,6 +13,6 @@
   block:
     - name: "Load base routine for '{{ system_service_id }}'"
       include_tasks: 03_base.yml
-    - name: "Flush system handlers for '{{ system_service_id }}'"
+    - name: "Flush system service handlers for '{{ system_service_id }}'"
       meta: flush_handlers
-  when: system_service_id is defined
+  when: system_service_id is defined

roles/sys-service/templates/systemctl.service.j2

@@ -1,14 +1,17 @@
 [Unit]
 Description={{ SOFTWARE_NAME }} - Service for role '{{ system_service_id }}'
 {{- system_service_tpl_on_failure | systemd_directive('OnFailure') }}
+StartLimitIntervalSec=60
+StartLimitBurst=3
+OnFailureJobMode=replace-irreversibly
 
 [Service]
 Type={{ system_service_tpl_type }}
-{%- for key, val in [
+{% for key, val in [
   ('TimeoutStartSec', system_service_tpl_timeout_start_sec),
   ('ExecStartPre',    system_service_tpl_exec_start_pre),
   ('ExecStart',       system_service_tpl_exec_start),
   ('RuntimeMaxSec',   system_service_tpl_runtime)
-] -%}
+] %}
-{{- val | systemd_directive(key) }}
+{{ val | systemd_directive(key) }}
-{%- endfor %}
+{% endfor %}