# Server Verification

RailianceHosts ships a declarative baseline spec and a Goss test suite that
asserts every managed node matches it. This replaces manual spot-checks with
a reproducible, CI-friendly pass/fail verdict.

## The spec

`spec/server-baseline.yaml` is the single source of truth for the target state
of every managed node. It covers:

- **Firewall** — UFW active, default deny inbound, required ports allowed
  (SSH 22/tcp, k3s API 6443/tcp, Flannel VXLAN 8472/udp)
- **SSH daemon** — root login disabled, password auth disabled, pubkey auth enabled
- **Services** — ufw, fail2ban, ssh.socket enabled and running
- **Packages** — ufw, fail2ban, git, curl, vim, htop (age and sops installed as binaries)
- **Users** — admin user with bash shell and passwordless sudo
- **Security** — fail2ban sshd jail active, HISTCONTROL=ignorespace in /etc/profile.d/

When you change the desired state of a node, update this file first. Then
update the Ansible role **and** the Goss tests to match.

## Running verification

```bash
make verify
```

This runs `ansible/playbooks/verify.yaml` against all hosts. The playbook:

1. Downloads the Goss binary (pinned version) to `/usr/local/bin/goss`
2. Copies `goss/baseline.yaml` to `/etc/goss/baseline.yaml` on each host
3. Runs `goss validate --format tap`
4. Fails the play (non-zero exit) if any assertion fails
5. Fetches the TAP report to `reports/goss-<host>-<timestamp>.tap`
6. Auto-commits the report to git

**All assertions passed** → exit 0
**One or more assertions FAILED** → exit non-zero, TAP report in `reports/`

## After convergence

The standard workflow after converging a new or updated node:

```bash
make converge   # bring the node to the desired state
make verify     # assert it got there
```

Run `make status` for a quick human-readable summary; run `make verify` when
you need a structured, automatable check.

## Goss test file

`goss/baseline.yaml` contains one Goss assertion per spec item. The mapping is:

| spec section | Goss resource |
|---|---|
| `firewall` | `command: ufw status` stdout patterns |
| `ssh` | `file: /etc/ssh/sshd_config.d/10-hardening.conf` contains |
| `services` | `service:` blocks |
| `packages` | `package:` blocks |
| `users` | `user:` block + `command: grep NOPASSWD` |
| `security.histcontrol` | `command: grep -r HISTCONTROL /etc/profile.d/` |
| `security.fail2ban_jails` | `command: fail2ban-client status sshd` |
| `age`, `sops` (binary installs) | `command: test -x /usr/local/bin/{age,sops}` |

## Adding new assertions

1. Add the desired state to `spec/server-baseline.yaml`
2. Add the Ansible task to `ansible/roles/base/tasks/main.yml`
3. Add the Goss assertion to `goss/baseline.yaml`
4. Run `make converge && make verify` to confirm

## Reports

TAP reports are committed to `reports/` after each `make verify` run.
They are machine-readable and suitable for CI pipelines. A cleanup policy
for old reports is tracked as extension point EP `78ef4879`.