Adds `# nocheck: required-by-coverage — TODO: declare proper required_by`
markers to meta/services.yml of 74 non-invokable system roles (dev-*, pkgmgr*,
sys-aur*, sys-front-inj-*, sys-front-tls-*, sys-svc-{cdn,certbot,certs,
cln-domains,dns,journalctl,mail*,proxy,rdbms,ssh,sshd}, sys-timer*, sys-stk-*,
user-*, …).
This is the passthrough layer that lets the upcoming `required_by` lint
(Bundle C) hard-fail any *new* non-invokable role without an explicit coverage
declaration, while existing roles get a documented TODO grace period instead
of an immediate CI break.
No runtime effect — comments only.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Systemd Timer
Description
This role configures a systemd timer to periodically start a corresponding service. It uses a Jinja2 template to create a timer unit file that specifies the scheduling parameters (such as OnCalendar and RandomizedDelaySec) and then restarts the timer service accordingly.
Overview
Optimized for automated task scheduling in a systemd environment, this role:
- Generates a timer unit file for a given service (using the
system_service_timer_servicevariable). - Reloads and restarts the timer using systemd to ensure that changes take effect.
- Supports dynamic configuration of scheduling parameters via variables like
system_service_on_calendarandRANDOMIZED_DELAY_SEC.
Purpose
The primary purpose of this role is to provide a reusable mechanism for scheduling recurring tasks on a system. By creating and managing a systemd timer unit, the role ensures that specified services are automatically started at defined intervals, enhancing system automation and reliability.
Features
- Dynamic Timer Configuration: Uses a Jinja2 template to create a timer unit file based on provided variables.
- Automated Service Management: Automatically reloads the systemd daemon and restarts the timer when changes are detected.
- Flexible Scheduling: Supports configuration of parameters such as OnCalendar and RandomizedDelaySec for precise control over task timing.
- Persistent Timers: Optionally enables persistent timer behavior to ensure missed activations are handled.
Credits
Developed and maintained by Kevin Veen-Birkenbach. Learn more at veen.world. Part of the Infinito.Nexus Project. Licensed under the Infinito.Nexus Community License (Non-Commercial).