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24 lines
1.5 KiB
Markdown
24 lines
1.5 KiB
Markdown
# Systemd Timer
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## Description
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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.
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## Overview
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Optimized for automated task scheduling in a [systemd](https://en.wikipedia.org/wiki/Systemd) environment, this role:
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- Generates a timer unit file for a given service (using the `service_name` variable).
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- Reloads and restarts the timer using systemd to ensure that changes take effect.
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- Supports dynamic configuration of scheduling parameters via variables like `on_calendar` and `randomized_delay_sec`.
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## Purpose
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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.
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## Features
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- **Dynamic Timer Configuration:** Uses a Jinja2 template to create a timer unit file based on provided variables.
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- **Automated Service Management:** Automatically reloads the systemd daemon and restarts the timer when changes are detected.
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- **Flexible Scheduling:** Supports configuration of parameters such as OnCalendar and RandomizedDelaySec for precise control over task timing.
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- **Persistent Timers:** Optionally enables persistent timer behavior to ensure missed activations are handled.
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