platform/platform-infra/ansible/roles/base/tasks/main.yml
Bart Van Geyt d715244b76 Phase 1: Ansible host baseline for Ubuntu VM
Idempotent host configuration targeting Ubuntu 24.04 with ZFS on a
dedicated second disk. Role-based platform-infra/ansible:

- base: apt packages, timezone, unattended security upgrades.
- zfs: install ZFS, create pool on a dedicated disk (guarded against
  wiping a non-empty disk), create platform datasets + customers parent
  per docs/03; docker dataset mounted at /var/lib/docker.
- docker: Docker Engine + Compose plugin, daemon.json written before first
  start so the native zfs storage driver initializes on the ZFS data-root;
  per-site network address pool preconfigured.
- firewall: nftables inbound default-deny in a dedicated table that never
  flushes Docker's rules; container outbound SMTP blocked via a DOCKER-USER
  jump applied by a systemd oneshot.
- ssh_hardening: key-first SSH with an anti-lockout assertion, config
  validation gate, and the sftponly group for Phase 4 SFTP accounts.

Includes ansible.cfg, requirements.yml, inventory example, group_vars with
safety notes, and a run guide. Real inventory (hosts.yml) is git-ignored.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-07 12:45:42 +02:00

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YAML

---
- name: Update apt cache
ansible.builtin.apt:
update_cache: true
cache_valid_time: 3600
- name: Install base packages
ansible.builtin.apt:
name:
- ca-certificates
- curl
- gnupg
- nftables
- acl
- rsync
- python3
- unattended-upgrades
state: present
- name: Get current timezone
ansible.builtin.command: timedatectl show -p Timezone --value
register: current_tz
changed_when: false
- name: Set system timezone
ansible.builtin.command: "timedatectl set-timezone {{ host_timezone }}"
when:
- host_timezone | length > 0
- current_tz.stdout != host_timezone
- name: Enable unattended security upgrades
ansible.builtin.copy:
dest: /etc/apt/apt.conf.d/20auto-upgrades
owner: root
group: root
mode: "0644"
content: |
APT::Periodic::Update-Package-Lists "1";
APT::Periodic::Unattended-Upgrade "1";