feat(sys-service): migrate cleanup/backup services to generic units; harden disk-space cleanup

Services: add SYS_SERVICE_CLEANUP_BACKUPS and SYS_SERVICE_CLEANUP_DISC_SPACE in group vars.

sys-ctl-bkp-docker-2-loc: switch to sys-service; add ExecStartPre lock; ExecStartPost triggers backup cleanup; OnFailure → cleanup-failed; fix shell quoting.

sys-ctl-cln-bkps: switch to sys-service; pass CLI args via ExecStart; add ExecStartPre lock; set OnFailure; copy files; remove role-specific service template.

sys-ctl-cln-disc-space: switch to sys-service; enable timer; set OnFailure; provide ExecStart/ExecStartPre; copy files; remove role-specific service template.

script.sh (disc-space): non-interactive docker exec; consistent threshold message (use parameter); guard docker/pacman via command checks; robust container check; fix typo; use POSIX '='.

svc-opt-keyboard-color: minor formatting cleanup.

sys-ctl-hlth-disc-space: chain OnFailure to cleanup-disc-space service.

Context: ChatGPT conversation (Sep 10, 2025, Europe/Berlin) — https://chatgpt.com/share/68c1982e-bdc8-800f-bf13-a8b9f084f90e

roles/svc-opt-keyboard-color/tasks/01_core.yml

@@ -13,6 +13,6 @@
 - include_role:
     name: sys-service
   vars:
-    system_service_on_calendar:    "{{ SYS_SCHEDULE_ANIMATION_KEYBOARD_COLOR }}"
-    system_service_timer_enabled:  true
-    persistent:               true
+    system_service_on_calendar:   "{{ SYS_SCHEDULE_ANIMATION_KEYBOARD_COLOR }}"
+    system_service_timer_enabled: true
+    persistent:                   true

roles/sys-ctl-bkp-docker-2-loc/tasks/01_core.yml

@@ -18,6 +18,10 @@
   include_role:
     name: sys-service
   vars:
-    system_service_copy_files:     false
-    system_service_timer_enabled:  true
-    system_service_on_calendar:    "{{ SYS_SCHEDULE_BACKUP_DOCKER_TO_LOCAL }}"
+    system_service_copy_files:          false
+    system_service_timer_enabled:       true
+    system_service_on_calendar:         "{{ SYS_SCHEDULE_BACKUP_DOCKER_TO_LOCAL }}"
+    system_service_tpl_exec_start_pre:  '/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(" ")  }} --ignore {{ SYS_SERVICE_BACKUP_DOCKER_2_LOC }} --timeout "{{ SYS_TIMEOUT_BACKUP_SERVICES }}"'
+    system_service_tpl_exec_start:      "/bin/sh -c '{{ BKP_DOCKER_2_LOC_EXEC }}'"
+    system_service_tpl_on_failure:      "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }} {{ SYS_SERVICE_CLEANUP_BACKUPS_FAILED }}"
+    system_service_tpl_exec_start_post: "/usr/bin/systemctl start {{ SYS_SERVICE_CLEANUP_BACKUPS }}"

roles/sys-ctl-bkp-docker-2-loc/templates/systemctl.service.j2

@@ -1,8 +0,0 @@
-[Unit]
-Description=backup docker volumes to local folder
-OnFailure={{ SYS_SERVICE_ON_FAILURE_COMPOSE }} {{ SYS_SERVICE_CLEANUP_BACKUPS_FAILED }}
-
-[Service]
-Type=oneshot
-ExecStartPre=/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(' ')  }} --ignore {{ SYS_SERVICE_BACKUP_DOCKER_2_LOC }} --timeout "{{ SYS_TIMEOUT_BACKUP_SERVICES }}"
-ExecStart=/bin/sh -c '{{ BKP_DOCKER_2_LOC_EXEC }}'

roles/sys-ctl-cln-bkps/tasks/01_core.yml

@@ -14,4 +14,9 @@
     state: present
 
 - include_role:
-    name: sys-service
+    name: sys-service
+  vars:
+    system_service_tpl_on_failure:      "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }}"
+    system_service_tpl_exec_start:      "{{ system_service_script_exec }} --backups-folder-path {{ BACKUPS_FOLDER_PATH }} --maximum-backup-size-percent {{SIZE_PERCENT_MAXIMUM_BACKUP}}"
+    system_service_tpl_exec_start_pre:  '/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(" ")  }} --ignore {{ SYS_SERVICE_GROUP_CLEANUP | join(" ") }} --timeout "{{ SYS_TIMEOUT_BACKUP_SERVICES }}"'
+    system_service_copy_files:          true

roles/sys-ctl-cln-bkps/templates/systemctl.service.j2

@@ -1,8 +0,0 @@
-[Unit]
-Description=delete old backups
-OnFailure={{ SYS_SERVICE_ON_FAILURE_COMPOSE }}
-
-[Service]
-Type=oneshot
-ExecStartPre=/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(' ')  }} --ignore {{ SYS_SERVICE_GROUP_CLEANUP | join(' ') }} --timeout "{{ SYS_TIMEOUT_BACKUP_SERVICES }}"
-ExecStart={{ system_service_script_exec }} --backups-folder-path {{ BACKUPS_FOLDER_PATH }} --maximum-backup-size-percent {{SIZE_PERCENT_MAXIMUM_BACKUP}}

roles/sys-ctl-cln-disc-space/tasks/01_core.yml

@@ -8,5 +8,9 @@
 - include_role:
     name: sys-service
   vars:
-    system_service_timer_enabled:  true
-    system_service_on_calendar: "{{SYS_SCHEDULE_CLEANUP_DISC_SPACE}}"
+    system_service_timer_enabled:       true
+    system_service_copy_files:          true
+    system_service_on_calendar:         "{{ SYS_SCHEDULE_CLEANUP_DISC_SPACE }}"
+    system_service_tpl_on_failure:      "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }}"
+    system_service_tpl_exec_start:      "{{ system_service_script_exec }} {{ SIZE_PERCENT_CLEANUP_DISC_SPACE }}"
+    system_service_tpl_exec_start_pre:  '/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(" ")  }} --ignore {{ SYS_SERVICE_GROUP_CLEANUP | join(" ") }} --timeout "{{ SYS_TIMEOUT_BACKUP_SERVICES }}"'

roles/sys-ctl-cln-disc-space/templates/script.sh.j2

@@ -6,7 +6,7 @@ minimum_percent_cleanup_disc_space="$1"
 force_freeing=false
 echo "Checking free disc space..."
 df
-if [ $# -gt 0 ] && [ "$2" == "--force" ]; then
+if [ $# -gt 0 ] && [ "$2" = "--force" ]; then
   echo "Forcing disc space freeing."
   force_freeing=true 
 fi 
@@ -14,7 +14,7 @@ for disc_use_percent in $(df --output=pcent | sed 1d)
 do
     disc_use_percent_number=$(echo "$disc_use_percent" | sed "s/%//")
     if [ "$disc_use_percent_number" -gt "$minimum_percent_cleanup_disc_space" ]; then
-      echo "WARNING: $disc_use_percent_number exceeds the limit of {{SIZE_PERCENT_DISC_SPACE_WARNING}}%."
+      echo "WARNING: ${disc_use_percent_number}% exceeds the limit of ${minimum_percent_cleanup_disc_space}%."
       force_freeing=true 
     fi
 done
@@ -24,29 +24,31 @@ if [ "$force_freeing" = true ]; then
   
   {% if BACKUPS_FOLDER_PATH is defined and SIZE_PERCENT_MAXIMUM_BACKUP is defined %}
   echo "cleaning up backups" &&
-  python {{ 'sys-ctl-cln-bkps' | get_service_script_path('sh') }} --backups-folder-path {{ BACKUPS_FOLDER_PATH }} --maximum-backup-size-percent {{ SIZE_PERCENT_MAXIMUM_BACKUP }} || exit 2
+  systemctl start {{ SYS_SERVICE_CLEANUP_BACKUPS }} || exit 2
   {% endif %}
 
-  if pacman -Qs $package > /dev/null ; then
+  if command -v docker >/dev/null 2>&1 ; then
     echo "cleaning up docker" &&
     docker system prune -f || exit 3
 
-    nextcloud_application_container="{{ applications | get_app_conf('web-app-nextcloud', 'docker.services.nextcloud.name', True) }}"
-    if [ "$(docker ps -a -q -f name=$nextcloud_application_container)" ] ; then
+    nextcloud_application_container="{{ applications | get_app_conf('web-app-nextcloud', 'docker.services.nextcloud.name') }}"
+    if [ -n "$nextcloud_application_container" ] && [ "$(docker ps -a -q -f name=$nextcloud_application_container)" ] ; then
       echo "cleaning up docker nextcloud" &&
-      docker exec -it -u www-data $nextcloud_application_container /var/www/html/occ files:cleanup || exit 4
-      docker exec -it -u www-data $nextcloud_application_container /var/www/html/occ trashbin:cleanup --all-users || exit 5
-      docker exec -it -u www-data $nextcloud_application_container /var/www/html/occ versions:cleanup || exit 6
+      docker exec -u www-data $nextcloud_application_container /var/www/html/occ files:cleanup || exit 4
+      docker exec -u www-data $nextcloud_application_container /var/www/html/occ trashbin:cleanup --all-users || exit 5
+      docker exec -u www-data $nextcloud_application_container /var/www/html/occ versions:cleanup || exit 6
     fi
 
   fi
 
-  echo "cleaning pacman cache" &&
-  yes | pacman -Sc || exit 7
+  if command -v pacman >/dev/null 2>&1 ; then
+    echo "cleaning pacman cache" &&
+    yes | pacman -Sc || exit 7
+  fi
 
   echo "cleanup finished."
 else
-  echo "Sufficiend disc space available."
+  echo "Sufficient disc space available."
   echo "To force the freeing of disc space pass the parameter --force."
 fi
 exit 0

roles/sys-ctl-cln-disc-space/templates/systemctl.service.j2

@@ -1,8 +0,0 @@
-[Unit]
-Description=freeing disc space
-OnFailure={{ SYS_SERVICE_ON_FAILURE_COMPOSE }}
-
-[Service]
-Type=oneshot
-ExecStartPre=/usr/bin/python {{ PATH_SYSTEM_LOCK_SCRIPT }} {{ SYS_SERVICE_GROUP_MANIPULATION | join(' ')  }} --ignore {{ SYS_SERVICE_GROUP_CLEANUP | join(' ') }} --timeout "{{ SYS_TIMEOUT_BACKUP_SERVICES }}"
-ExecStart={{ system_service_script_exec }} {{ SIZE_PERCENT_CLEANUP_DISC_SPACE }}

roles/sys-ctl-hlth-disc-space/tasks/01_core.yml

@@ -8,4 +8,4 @@
   vars:
     system_service_on_calendar:    "{{ SYS_SCHEDULE_HEALTH_DISC_SPACE }}"
     system_service_timer_enabled:  true
-    system_service_tpl_on_failure: "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }}"
+    system_service_tpl_on_failure: "{{ SYS_SERVICE_ON_FAILURE_COMPOSE }} {{ SYS_SERVICE_CLEANUP_DISC_SPACE }}"