server_cloud_ladkau_de/README.md at 75a0f21f74d89989f65e80cfb8e219375e122111

Files

T

ml 6115d9d48f Set up repo structure and implement base role

- Document architecture decisions in README (Ansible + Docker Compose + Traefik)
- Scaffold Ansible layout: inventory, site.yml, group_vars, 9 service roles
- Implement base role: package install, deploy user, SSH hardening,
  UFW firewall (22/80/443), fail2ban, unattended-upgrades
- Add reinstall runbook in docs/runbook.md
- Add ansible/requirements.yml for community.general and ansible.posix

2026-06-27 15:02:21 +02:00

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Info:

Server: Strato STRATO VPS Linux VC4-8 Order Number: 9478462

Customer Number: 73171334
Customer Login: https://www.strato.de/apps/CustomerService

Cores: 4 Cores
RAM: 8 GB RAM
Storage: 240 HDD

IPv4: 217.154.207.148
IPv6: 2a01:239:35b:c400::1

OS: Ubuntu 24.04 LTS

DNS Names: cloud.ladkau.de gitea.ladkau.de nextcloud.ladkau.de sso.ladkau.de mail.ladkau.de cr.ladkau.de k8s.ladkau.de

Purpose:

This repository tracks the complete server configuration so the server can be fully reinstalled from scratch using only this repo. Every configuration change must be committed here. The git history serves as the change log.

Architecture:

Provisioning: Ansible Ansible playbooks configure the OS and deploy all services. Roles are idempotent — re-running them brings the server back to the desired state without side effects. The master playbook is ansible/site.yml.

Service runtime: Docker Compose Each service runs as a Docker Compose stack. Compose files live inside their respective Ansible roles (roles//files/docker-compose.yml). This keeps service definition and deployment config together.

Reverse proxy / TLS: Traefik Traefik is the single entry point for all HTTP/HTTPS traffic. It runs as a Docker Compose service and routes to other containers via Docker labels. TLS certificates are issued automatically via Let's Encrypt (ACME).

Repo layout:

ansible/
	inventory.ini        # host address and connection vars
	site.yml             # master playbook — runs all roles in order
	group_vars/all.yml   # shared variables (domains, image versions, ...)
	roles/
		base/            # OS hardening, non-root user, SSH, ufw firewall
		docker/          # Docker Engine + Compose plugin install
		traefik/         # reverse proxy, TLS termination
		gitea/           # self-hosted Git
		nextcloud/       # file storage and collaboration
		sso/             # Single Sign-On
		mail/            # mail server
		registry/        # container registry (cr.ladkau.de)
		k8s/             # k3s Kubernetes node
docs/
	runbook.md           # step-by-step reinstall instructions
keys/
	*.pub                # public SSH keys (private keys are gitignored)

SSH keys:

root_cloud_ladkau_de      — root access (initial setup only)
notroot_cloud_ladkau_de   — non-root deploy user (used by Ansible)