Files
computer-playbook/roles/sys-ctl-mtn-cert-renew/README.md
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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Markdown

# NGINX Certbot Automation
## Description
This role automates the setup of an automatic [Let's Encrypt](https://letsencrypt.org/) certificate renewal system for NGINX using [Certbot](https://certbot.eff.org/). It ensures that SSL/TLS certificates are renewed seamlessly in the background and that NGINX reloads automatically after successful renewals.
## Overview
Optimized for Archlinux systems, this role installs the `certbot-NGINX` package, configures a dedicated `systemd` service for certificate renewal, and integrates with a `sys-timer` to schedule periodic renewals. After a renewal, NGINX is reloaded to apply the updated certificates immediately.
### Key Features
- **Automatic Renewal:** Schedules unattended certificate renewals using sys-timers.
- **Seamless NGINX Reload:** Reloads the NGINX service automatically after successful renewals.
- **Systemd Integration:** Manages renewal operations reliably with `systemd` and `sys-ctl-alm-compose`.
- **Quiet and Safe Operation:** Uses `--quiet` and `--agree-tos` flags to ensure non-interactive renewals.
## Cosmos
The diagram places NGINX Certbot Automation 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).
```mermaid
flowchart LR
subgraph deps [Dependencies]
dep_sys_ctl_cln_certs["sys-ctl-cln-certs 💻 ⚙️"]
end
subgraph role [sys-ctl-mtn-cert-renew 💻]
svc_cert_renew["cert-renew"]
end
dep_sys_ctl_cln_certs -- "1:1" --> svc_cert_renew
```
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`.
## Purpose
The NGINX Certbot Automation role ensures that Let's Encrypt SSL/TLS certificates stay valid without manual intervention. It enhances the security and reliability of web services by automating certificate lifecycle management.
## Features
- **Certbot-NGINX Package Installation:** Installs required certbot plugins for NGINX.
- **Custom Systemd Service:** Configures a lightweight, dedicated renewal service.
- **Timer Setup:** Uses sys-timer to run certbot renewals periodically.
- **Failure Notification:** Integrated with `sys-ctl-alm-compose` for alerting on failures.
## Learn More
- [Certbot Official Website](https://certbot.eff.org/)
- [Let's Encrypt](https://letsencrypt.org/)
- [Systemd (Wikipedia)](https://en.wikipedia.org/wiki/Systemd)
- [HTTPS (Wikipedia)](https://en.wikipedia.org/wiki/HTTPS)
## Credits
Implemented by **[Kevin Veen-Birkenbach](https://www.veen.world)**.
Part of the [Infinito.Nexus Project](https://s.infinito.nexus/code) and maintained by [Kevin Veen-Birkenbach](https://www.veen.world).
Licensed under the [Infinito.Nexus Community License (Non-Commercial)](https://s.infinito.nexus/license).