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nixos/scripts/drift-detect.sh
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beatzaplentyandClaude Sonnet 4.6 f85c65870f Initial infrastructure mono-repo scaffold
Consolidates nixos, docker, raspi, and debian-configuration into a single
infrastructure-as-code repo. Includes:

- ansible/: full inventory + proxmox-hardening, freeipa, and raspberrypi
  roles (converted from debian-configuration bash scripts)
- terraform/: Proxmox VMs, Dynu DNS, Pi-hole (decommissioned stub),
  Docker container catalog — migrated from docker/infrastructure/terraform/
- stacks/docker/, stacks/raspi/, nixos/: placeholder READMEs pending
  git subtree population (see implementation plan)
- docs/: internal MkDocs site with architecture, network topology, runbooks,
  and drift-detection guide; external sanitized site
- scripts/: drift-detect.sh, docs-build.sh, install-hooks.sh, check-secrets.sh
- CI: secret-scan (push/PR), drift-detect (daily), docs-build (on change)
- Pi-hole removed throughout — DNS is FreeIPA, DHCP is router

See docs/internal/implementation-plan.md for the phased rollout after
pushing to Gitea.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UvNjoxTWEDkhXsd1Dq2ETP
2026-07-30 07:07:47 +10:00

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#!/usr/bin/env bash
# Local drift detection runner.
# Runs terraform plan (all workspaces) and ansible --check, then summarises.
#
# Usage:
# ./scripts/drift-detect.sh # run everything
# ./scripts/drift-detect.sh --terraform # terraform only
# ./scripts/drift-detect.sh --ansible # ansible only
# ./scripts/drift-detect.sh --check-only # alias for full run (no apply)
set -euo pipefail
REPO_ROOT="$(git rev-parse --show-toplevel)"
cd "$REPO_ROOT"
RUN_TF=true
RUN_ANSIBLE=true
for arg in "$@"; do
case "$arg" in
--terraform) RUN_ANSIBLE=false ;;
--ansible) RUN_TF=false ;;
--check-only) ;; # default, no-op
*) echo "Unknown flag: $arg" >&2; exit 1 ;;
esac
done
DRIFT_FOUND=0
# ── Terraform ──────────────────────────────────────────────────────────────────
if [ "$RUN_TF" = true ]; then
echo ""
echo "━━━ Terraform drift detection ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
for workspace in terraform/proxmox terraform/dns terraform/pihole; do
if [ ! -f "${workspace}/providers.tf" ] && [ ! -f "${workspace}/provider.tf" ]; then
echo "[SKIP] ${workspace} — no providers.tf found"
continue
fi
echo ""
echo "--- ${workspace} ---"
(
cd "$workspace"
if [ ! -d .terraform ]; then
terraform init -input=false -no-color >/dev/null 2>&1
fi
set +e
terraform plan -detailed-exitcode -input=false -no-color
EXIT=$?
set -e
if [ "$EXIT" -eq 2 ]; then
echo "DRIFT: ${workspace} has pending changes"
DRIFT_FOUND=1
elif [ "$EXIT" -ne 0 ]; then
echo "ERROR in ${workspace} — plan failed (exit ${EXIT})"
DRIFT_FOUND=1
fi
)
done
fi
# ── Ansible ────────────────────────────────────────────────────────────────────
if [ "$RUN_ANSIBLE" = true ]; then
echo ""
echo "━━━ Ansible drift detection (--check --diff) ━━━━━━━━━━━━━━━━━━━━━━━━━━━"
(
cd ansible
ansible-playbook playbooks/site.yml --check --diff 2>&1 | tee /tmp/ansible-drift.log
if grep -q 'changed=' /tmp/ansible-drift.log; then
echo "DRIFT: Ansible found pending changes"
DRIFT_FOUND=1
fi
)
fi
# ── Summary ────────────────────────────────────────────────────────────────────
echo ""
echo "━━━ Summary ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
if [ "$DRIFT_FOUND" -eq 0 ]; then
echo "No drift detected. All infrastructure matches declared state."
else
echo "Drift detected — review the plan output above."
fi
exit "$DRIFT_FOUND"