Files
computer-playbook/roles/sys-timer
kevinveenbirkenbachandClaude Opus 4.7 4bd23d5f1b chore(roles): mark non-invokable roles with nocheck:required-by-coverage (Bundle D)
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>
2026-05-23 04:23:45 +02:00
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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_service variable).
  • 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_calendar and RANDOMIZED_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).