docs/infra/config-to-git.md

Config-to-git fleet

Each host snapshots its critical config to a private Gitea repo on git.nuclide.systems daily. Force-push (mirror only — history isn't sacred). Token: long-lived fkrebs PAT embedded in remote URLs (mode 0600 on script/config).

Repos

Host	CT/VM	Repo	Schedule	Script	Source
PVE (nuc)	host	fkrebs/pve-conf	daily 03:00	/usr/local/sbin/pve-conf-backup.sh (cron /etc/cron.d/pve-conf-backup)	/etc/pve/ (excludes priv/, *.key, authkey.pub*)
Zoraxy	CT 108	fkrebs/zoraxy-conf	daily 03:00	/usr/local/sbin/zoraxy-conf-backup.sh (cron /etc/cron.d/zoraxy-conf-backup)	Zoraxy config dir
AdGuard	CT 102	fkrebs/adguard-conf	daily 03:00	/usr/local/sbin/adguard-conf-backup.sh (cron /etc/cron.d/adguard-conf-backup)	AdGuard config dir
Home Assistant	VM 100	fkrebs/home-assistant-config	manual cron via addon init_commands (see below)	/config/scripts/git-push.sh	/config/ (sees .gitignore allowlist)
Backrest	CT 103	fkrebs/ct103-conf	daily 03:00	/usr/local/sbin/ct103-conf-backup.sh	/opt/backrest/config/, /etc/cron.d/, /usr/local/bin/
Ops stack	CT 109	fkrebs/ct109-conf	daily 03:00	/usr/local/sbin/ct109-conf-backup.sh	/opt/stacks/ (excludes */data/, *.db*), /etc/cron.d/
Postgres / WAL-G	CT 113	fkrebs/ct113-conf	daily 03:00	/usr/local/sbin/ct113-conf-backup.sh	/opt/stacks/ (excludes */data/), /etc/postgresql/, /etc/cron.d/, /usr/local/bin/
Obsidian vault	UNAS via CT 103	fkrebs/obsidian-vault	daily 04:00	/usr/local/sbin/obsidian-vault-backup.sh	Notizen/ (excludes sync indices, .obsidian/, .trash). Rolling 2-commit history.
Primary Docker host	CT 104	fkrebs/ct104-conf	daily 03:00	/usr/local/sbin/ct104-conf-backup.sh (cron /etc/cron.d/ct104-conf-backup)	/opt/stacks/ — *.yml, *.yaml, *.json, *.conf, *.sh, *.md only; excludes */data/, .env, *.db*, *.key, *.pem
Obsidian config	manual zip drop	fkrebs/obsidian-config	manual (or via Obsidian Git plugin)	/tmp/obsidian-config-init.sh (one-shot)	.obsidian/ minus workspace*.json, cache/, *.bak*

fkrebs/ha-config was created in error 2026-05-24 — deleted.

Pattern

All scripts follow the same shape:

#!/bin/bash
set -e
REPO_URL="https://fkrebs:<TOKEN>@git.nuclide.systems/fkrebs/<repo>.git"
WORK="/tmp/<name>-work"
mkdir -p "$WORK"
git -C "$WORK" init -b main -q 2>/dev/null || true
git -C "$WORK" config user.email "noreply@nuclide.systems"
git -C "$WORK" config user.name "<name>-backup"
git -C "$WORK" remote set-url origin "$REPO_URL" 2>/dev/null \
  || git -C "$WORK" remote add origin "$REPO_URL"
rsync -a --delete --exclude='.git' [+ secret excludes] <source>/ "$WORK/"
git -C "$WORK" add -A
git -C "$WORK" commit -q -m "auto: $(date -u +%Y-%m-%dT%H:%M:%SZ)" 2>/dev/null || true
git -C "$WORK" push -q --force origin main

PVE/CT 108/CT 102 use a rsync-to-tmp-then-push pattern. HAOS uses an in-place git add -A on /config because the .gitignore there is hand-curated with an allowlist for .storage/.

HAOS specifics

• Path: /config/scripts/git-push.sh (mode 0700, runs in the Terminal & SSH addon).

• Remote: https://fkrebs:<TOKEN>@git.nuclide.systems/fkrebs/home-assistant-config.git. Token lives in /config/.git/config (mode 0600).

• .gitignore uses a default-deny allowlist for .storage/ — only safe registry/lovelace/helpers/energy files are tracked. Tokens (core.config_entries, mobile_app, androidtv_adbkey*, etc.) are explicitly excluded. See /config/.gitignore on HAOS for the full list.

• Scheduling — Terminal & SSH addon container is rebuilt on update, so its crontabs/ are not persistent. Use the addon's init_commands (Configuration tab):

  init_commands:
    - 'echo "0 3 * * * /config/scripts/git-push.sh >> /config/scripts/git-push.log 2>&1" > /etc/crontabs/root && crond -b'
  

  Then Restart the addon. Alternative: HA automation calling shell_command is not viable — the homeassistant container doesn't have SSH to addon containers.

Token rotation

All four repos use the same PAT (fkrebs user, full repo scope). Rotate by:

1. Generate new PAT in Gitea → user settings → applications.
2. git remote set-url origin https://fkrebs:<NEW>@git.nuclide.systems/fkrebs/<repo>.git on each host.
3. Manually run each script once to verify.

Token leak risk: tracked in gitea_open_issues; long-term move is to switch to per-host deploy keys.

Verification

Last commit on each repo should be auto: <today>T03:0X:XXZ. Quick check:

for r in pve-conf zoraxy-conf adguard-conf home-assistant-config; do
  echo -n "$r: "
  curl -sk -H "Authorization: token <TOKEN>" \
    "https://git.nuclide.systems/api/v1/repos/fkrebs/$r/commits?limit=1" \
    | python3 -c 'import json,sys; c=json.load(sys.stdin)[0]; print(c["commit"]["author"]["date"], c["commit"]["message"][:60])'
done

Related

• homelab-architecture — host topology
• backrest-ct103 — separate, repo-style binary backup for data (not config)