Files
rick-infra/roles/authentik/tasks/cache.yml
Joakim 3506e55016 Migrate to rootful container architecture with infrastructure fact pattern
Major architectural change from rootless user services to system-level (rootful)
containers to enable group-based Unix socket access for containerized applications.

Infrastructure Changes:
- PostgreSQL: Export postgres-clients group GID as Ansible fact
- Valkey: Export valkey-clients group GID as Ansible fact
- Valkey: Add socket-fix service to maintain correct socket group ownership
- Both: Set socket directories to 770 with client group ownership

Authentik Role Refactoring:
- Remove rootless container configuration (subuid/subgid, lingering, user systemd)
- Deploy Quadlet files to /etc/containers/systemd/ (system-level)
- Use dynamic GID facts in container PodmanArgs (--group-add)
- Simplify user creation to system user with infrastructure group membership
- Update handlers for system scope service management
- Remove unnecessary container security options (no user namespace isolation)

Container Template Changes:
- Pod: Remove --userns args, change WantedBy to multi-user.target
- Containers: Replace Annotation with PodmanArgs using dynamic GIDs
- Remove /dev/shm mounts and SecurityLabelDisable (not needed for rootful)
- Change WantedBy to multi-user.target for system services

Documentation Updates:
- Add ADR-005: Rootful Containers with Infrastructure Fact Pattern
- Update ADR-003: Podman + systemd for system-level deployment
- Update authentik-deployment-guide.md for system scope commands
- Update service-integration-guide.md with rootful pattern examples
- Document discarded rootless approach and rationale

Why Rootful Succeeds:
- Direct UID/GID mapping preserves supplementary groups
- Container process groups match host socket group ownership
- No user namespace remapping breaking permissions

Why Rootless Failed (Discarded):
- User namespace UID/GID remapping broke group-based socket access
- Supplementary groups remapped into subgid range didn't match socket ownership
- Even with --userns=host and keep_original_groups, permissions failed

Pattern Established:
- Infrastructure roles create client groups and export GID facts
- Application roles validate facts and consume in container templates
- Rootful containers run as dedicated users with --group-add for socket access
- System-level deployment provides standard systemd service management

Deployment Validated:
- Services in /system.slice/ ✓
- Process groups: 961 (valkey-clients), 962 (postgres-clients), 966 (authentik) ✓
- Socket permissions: 770 with client groups ✓
- HTTP endpoint responding ✓
2025-12-14 16:56:50 +01:00

63 lines
1.7 KiB
YAML

---
# Cache setup for Authentik - Self-contained socket permissions
- name: Add authentik user to Valkey client group for socket access
user:
name: "{{ authentik_user }}"
groups: "{{ valkey_client_group }}"
append: true
- name: Test Valkey socket connectivity
command: >
redis-cli -s {{ valkey_unix_socket_path }}
-a {{ valkey_password }}
-n {{ authentik_valkey_db }}
ping
become: true
become_user: "{{ authentik_user }}"
register: valkey_socket_test
failed_when: valkey_socket_test.stdout != "PONG"
changed_when: false
- name: Configure Authentik Valkey database
command: >
redis-cli -s {{ valkey_unix_socket_path }}
-a {{ valkey_password }}
-n {{ authentik_valkey_db }}
CONFIG SET save ""
become: true
become_user: "{{ authentik_user }}"
register: valkey_config_result
changed_when: true
- name: Verify Authentik can write to Valkey database
command: >
redis-cli -s {{ valkey_unix_socket_path }}
-a {{ valkey_password }}
-n {{ authentik_valkey_db }}
SET authentik:healthcheck "deployed"
become: true
become_user: "{{ authentik_user }}"
register: valkey_write_test
changed_when: false
- name: Clean up Valkey test key
command: >
redis-cli -s {{ valkey_unix_socket_path }}
-a {{ valkey_password }}
-n {{ authentik_valkey_db }}
DEL authentik:healthcheck
become: true
become_user: "{{ authentik_user }}"
changed_when: false
- name: Display cache setup status
debug:
msg: |
✅ Authentik cache setup complete!
🗄️ Cache DB: {{ authentik_valkey_db }}
🔌 Connection: Unix socket ({{ valkey_unix_socket_path }})
📊 Test: {{ valkey_socket_test.stdout }}
🏗️ Ready for Authentik container deployment