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kevinveenbirkenbachandClaude Opus 5 c55f508e05 feat(readme): draw mandatory and disabled service relations

The cosmos generator linked a consumer to its provider only through an
'<role>' in group_names reference or an explicit provides: name. A hard
dependency has neither -- pinning the provider on unconditionally is
exactly what removes the Jinja reference the generator was reading -- so
web-svc-asset's bond to web-svc-file vanished from the diagram the moment
it became binding. Match a service key against the provider's own primary
key from the registry, in both directions.

Services the role turns off drew a solid 1:1 edge, claiming a mandatory
relationship for something that carries nothing at deploy time. They now
render as a red 0..0 edge; edge merging gained a real precedence so a
provider consumed through two keys stays live when only one is off.

Named colour, not hex: a '#' opens an entity code in the mermaid lexer and
turns the whole diagram into a parse error on GitHub.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-08-17 18:02:31 +02:00

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sys-service

Description

Role to manage systemd service units for Infinito.Nexus software stacks. It installs or removes unit files, configures runtime behavior, and ensures services are properly deployed.

Overview

Resets service units by removing old or obsolete definitions.
Deploys new service unit files and service scripts.
Optionally sets up timers linked to the services.
Ensures correct reload/restart behavior across the stack.
Provides the shared files/debug.sh SPOT for reusable service-failure diagnostics.
Exposes tasks/utils/debug.yml as the canonical Ansible wrapper around that script.

Cosmos

The diagram places sys-service in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph role [sys-service 💻]
        svc_service["service"]
    end

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role's deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Features

Unit Cleanup: Automated removal of old service units.
Custom Templates: Supports both systemctl.service.j2 and systemctl@.service.j2.
Timers: Integrates with sys-timer for scheduled execution.
Runtime Limits: Configurable RuntimeMaxSec per service.
Handlers: Automatic reload/restart of services when definitions change.
Shared Diagnostics: Centralized systemctl/journalctl/unit-file diagnostics via files/debug.sh.
Wrapper Task: Reusable Ansible include in tasks/utils/debug.yml for calling and printing the shared diagnostics.

Further Resources

Credits

Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).

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