VPS public SSH: enable fail2ban with bantime-increment so brute-force
probers get evicted with exponential backoff (1h → 4h → 16h → 2.7d →
10.7d, capped at 30d). Default jail covers sshd; maxretry=5 in 10m.
server-debug-tools: htop, tcpdump, dnsutils, jq, curl. Imported by
sunken-ship + phantom-ship via flake.nixosModules.server-debug-tools.
These are the practical bits we'd otherwise pick up by enabling
clan.core.enableRecommendedDefaults — but the full clan defaults flip
systemd-networkd/resolved on, which broke dnsmasq + navidrome's resolv
.conf bind-mount on the homelab servers, so we cherry-pick instead.
Stage 4.5: declare a Hetzner-hosted reverse-proxy VPS as a clan machine.
- nixos/hosts/vps-relay.nix: Debian→NixOS cx23 in hel1. Caddy at public
80/443 reverse-proxies navidrome.dannydannydanny.me and
bbbot.dannydannydanny.me over ZT to sunken-ship.
- nixos/disko-cloud.nix: simple GPT + ext4 root, no LUKS — cloud provider
has physical disk anyway and there's no operator at boot.
- flake-modules/clan.nix: register vps-relay as an inventory machine,
zerotier peer, internet networking target at its clan-generated ZT
IPv6, and add vps-relay.clan to clanHostsModule /etc/hosts.
- sunken-ship fitness-bot: drop pkgs.cloudflared from PATH + set
WEBAPP_URL=https://bbbot.dannydannydanny.me. Paired with the bbbot
upstream patch (start.py honors env WEBAPP_URL and skips cloudflared
when set) — once the 15-min fitness-bot-pull timer pulls that change,
bbbot will stop churning trycloudflare.com URLs.
Vars (zerotier identity/ip + sops machine key) generated on sunken-ship
because clan's hermetic sandbox on macOS fails to run the zerotier
identity generator (same workaround as for data-mesher earlier).
VPS install flow: Hetzner-created Debian box, then `clan machines
install vps-relay --target-host root@<public-ipv4>` reinstalls to
NixOS; subsequent updates go over ZT.
