Docker Compose Certificate Sync Service
Description
Keeps Docker Compose services updated with fresh Let’s Encrypt certificates via a systemd oneshot service and timer.
Overview
Installs a small script and a systemd unit that copy certificates into your Compose project and trigger an NGINX hot-reload (fallback: restart) to minimize downtime.
Cosmos
The diagram places Docker Compose Certificate Sync 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-ctl-mtn-cert-deploy 💻]
svc_cert_deploy["cert-deploy"]
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
- Automatic certificate sync into the Compose project
- Mailu-friendly filenames (
key.pem,cert.pem) - NGINX hot-reload if available, otherwise restart
- Runs on a schedule you define
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).